Design of ORing Seals Design of ORing Seals
![Design of O-Ring Seals Design of O-Ring Seals](https://slidetodoc.com/presentation_image_h/837104d0f72ea6cc27bef8ed9e5f3ef1/image-1.jpg)
![Design of O-Ring Seals Primary Source of information Design of O-Ring Seals Primary Source of information](https://slidetodoc.com/presentation_image_h/837104d0f72ea6cc27bef8ed9e5f3ef1/image-2.jpg)
![Why O-Rings? Can be used for static and dynamic applications Compact – need very Why O-Rings? Can be used for static and dynamic applications Compact – need very](https://slidetodoc.com/presentation_image_h/837104d0f72ea6cc27bef8ed9e5f3ef1/image-3.jpg)
![Why O-Rings? Wide range of operating temperatures Wide range of operating pressures Good durability Why O-Rings? Wide range of operating temperatures Wide range of operating pressures Good durability](https://slidetodoc.com/presentation_image_h/837104d0f72ea6cc27bef8ed9e5f3ef1/image-4.jpg)
![Limitations of O-rings Temperature (typically between -40 and 400 degrees F) Rotary speeds ( Limitations of O-rings Temperature (typically between -40 and 400 degrees F) Rotary speeds (](https://slidetodoc.com/presentation_image_h/837104d0f72ea6cc27bef8ed9e5f3ef1/image-5.jpg)
![O-Rings O-Rings](https://slidetodoc.com/presentation_image_h/837104d0f72ea6cc27bef8ed9e5f3ef1/image-6.jpg)
![Popular O-ring materials Nitrile (Buna-N) Variety of trade names Copolymer of butadiene and acrylonitrile Popular O-ring materials Nitrile (Buna-N) Variety of trade names Copolymer of butadiene and acrylonitrile](https://slidetodoc.com/presentation_image_h/837104d0f72ea6cc27bef8ed9e5f3ef1/image-7.jpg)
![Popular O-ring materials Nitrile (Buna-N) Excellent resistance to petroleum-based oils and fuels silicone greases Popular O-ring materials Nitrile (Buna-N) Excellent resistance to petroleum-based oils and fuels silicone greases](https://slidetodoc.com/presentation_image_h/837104d0f72ea6cc27bef8ed9e5f3ef1/image-8.jpg)
![Popular O-ring materials Nitrile (Buna-N) Applications Oil resistant applications Low temperature uses Off-road equipment Popular O-ring materials Nitrile (Buna-N) Applications Oil resistant applications Low temperature uses Off-road equipment](https://slidetodoc.com/presentation_image_h/837104d0f72ea6cc27bef8ed9e5f3ef1/image-9.jpg)
![Other O-ring Materials Viton® / FKM: Fluorocarbon (Viton®) exceptional resistance to chemicals, oils, temperature Other O-ring Materials Viton® / FKM: Fluorocarbon (Viton®) exceptional resistance to chemicals, oils, temperature](https://slidetodoc.com/presentation_image_h/837104d0f72ea6cc27bef8ed9e5f3ef1/image-10.jpg)
![Other O-ring Materials Fluorosilicone / FVMQ: Fluorosilicone (-75º to +400ºF) combines the good high Other O-ring Materials Fluorosilicone / FVMQ: Fluorosilicone (-75º to +400ºF) combines the good high](https://slidetodoc.com/presentation_image_h/837104d0f72ea6cc27bef8ed9e5f3ef1/image-11.jpg)
![Other O-ring Materials Silicone / VMQ: Superior as static seals in extreme temperature conditions. Other O-ring Materials Silicone / VMQ: Superior as static seals in extreme temperature conditions.](https://slidetodoc.com/presentation_image_h/837104d0f72ea6cc27bef8ed9e5f3ef1/image-12.jpg)
![Other O-ring Materials Neoprene® / CR: Neoprene (-40º to +250ºF) features good resistance to Other O-ring Materials Neoprene® / CR: Neoprene (-40º to +250ºF) features good resistance to](https://slidetodoc.com/presentation_image_h/837104d0f72ea6cc27bef8ed9e5f3ef1/image-13.jpg)
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![O-Ring Seal Design The O-ring Specifications Size (inside diameter) 1/32 to 26 inches CS O-Ring Seal Design The O-ring Specifications Size (inside diameter) 1/32 to 26 inches CS](https://slidetodoc.com/presentation_image_h/837104d0f72ea6cc27bef8ed9e5f3ef1/image-17.jpg)
![O-ring Standards Standard AS 568 ISO 3601 Example AS 016 -70 N Nitrile O-ring O-ring Standards Standard AS 568 ISO 3601 Example AS 016 -70 N Nitrile O-ring](https://slidetodoc.com/presentation_image_h/837104d0f72ea6cc27bef8ed9e5f3ef1/image-18.jpg)
![O-ring Search Tools O-ring Search Tools](https://slidetodoc.com/presentation_image_h/837104d0f72ea6cc27bef8ed9e5f3ef1/image-19.jpg)
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![O-Ring Hardness Measured on Shore-A hardness index Shore 20 A = Rubber Band Shore O-Ring Hardness Measured on Shore-A hardness index Shore 20 A = Rubber Band Shore](https://slidetodoc.com/presentation_image_h/837104d0f72ea6cc27bef8ed9e5f3ef1/image-21.jpg)
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![O-Ring Properties Fluid resistance Hardness Toughness Volume change (swell / shrinkage) Compression set Thermal O-Ring Properties Fluid resistance Hardness Toughness Volume change (swell / shrinkage) Compression set Thermal](https://slidetodoc.com/presentation_image_h/837104d0f72ea6cc27bef8ed9e5f3ef1/image-23.jpg)
![O-ring Seal Design The Gland (Groove + Spacing) Depth of groove Width of groove O-ring Seal Design The Gland (Groove + Spacing) Depth of groove Width of groove](https://slidetodoc.com/presentation_image_h/837104d0f72ea6cc27bef8ed9e5f3ef1/image-24.jpg)
![Static Seals Static Axial Seal (Face Seal) Static Seals Static Axial Seal (Face Seal)](https://slidetodoc.com/presentation_image_h/837104d0f72ea6cc27bef8ed9e5f3ef1/image-25.jpg)
![Static Seals Static Crush Seal Static Seals Static Crush Seal](https://slidetodoc.com/presentation_image_h/837104d0f72ea6cc27bef8ed9e5f3ef1/image-26.jpg)
![Static Seals Static Radial Seal (Piston Seal) Static Seals Static Radial Seal (Piston Seal)](https://slidetodoc.com/presentation_image_h/837104d0f72ea6cc27bef8ed9e5f3ef1/image-27.jpg)
![Dynamic Seals Reciprocating Seals Dynamic Seals Reciprocating Seals](https://slidetodoc.com/presentation_image_h/837104d0f72ea6cc27bef8ed9e5f3ef1/image-28.jpg)
![Dynamic Seals Rotary Seals Dynamic Seals Rotary Seals](https://slidetodoc.com/presentation_image_h/837104d0f72ea6cc27bef8ed9e5f3ef1/image-29.jpg)
![Dynamic Seals Dynamic Seals](https://slidetodoc.com/presentation_image_h/837104d0f72ea6cc27bef8ed9e5f3ef1/image-30.jpg)
![General Design Guidelines Stretch should be less than 5% on the O-ring I. D. General Design Guidelines Stretch should be less than 5% on the O-ring I. D.](https://slidetodoc.com/presentation_image_h/837104d0f72ea6cc27bef8ed9e5f3ef1/image-31.jpg)
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![Design of Axial Seal Design of Axial Seal](https://slidetodoc.com/presentation_image_h/837104d0f72ea6cc27bef8ed9e5f3ef1/image-33.jpg)
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![Example Design a groove for a 1. 5 inch diameter Internal pressure O-ring : Example Design a groove for a 1. 5 inch diameter Internal pressure O-ring :](https://slidetodoc.com/presentation_image_h/837104d0f72ea6cc27bef8ed9e5f3ef1/image-35.jpg)
![Example Design Checking resulting compression Compression (squeeze) = W - H Min. Comp. = Example Design Checking resulting compression Compression (squeeze) = W - H Min. Comp. =](https://slidetodoc.com/presentation_image_h/837104d0f72ea6cc27bef8ed9e5f3ef1/image-36.jpg)
![Radial Seal Radial Static Piston Seal Radial Seal Radial Static Piston Seal](https://slidetodoc.com/presentation_image_h/837104d0f72ea6cc27bef8ed9e5f3ef1/image-37.jpg)
![Example Design a groove for a 0. 7 inch diameter piston ring O-ring : Example Design a groove for a 0. 7 inch diameter piston ring O-ring :](https://slidetodoc.com/presentation_image_h/837104d0f72ea6cc27bef8ed9e5f3ef1/image-38.jpg)
![Example Design Checking compression Comp = W – 0. 5(A - C) Min. Comp Example Design Checking compression Comp = W – 0. 5(A - C) Min. Comp](https://slidetodoc.com/presentation_image_h/837104d0f72ea6cc27bef8ed9e5f3ef1/image-39.jpg)
![](https://slidetodoc.com/presentation_image_h/837104d0f72ea6cc27bef8ed9e5f3ef1/image-40.jpg)
![Radial Static Rod Seal Radial Static Rod Seal](https://slidetodoc.com/presentation_image_h/837104d0f72ea6cc27bef8ed9e5f3ef1/image-41.jpg)
![Static Crush Seal Static Crush Seal](https://slidetodoc.com/presentation_image_h/837104d0f72ea6cc27bef8ed9e5f3ef1/image-42.jpg)
![Static Crush Seal Static Crush Seal](https://slidetodoc.com/presentation_image_h/837104d0f72ea6cc27bef8ed9e5f3ef1/image-43.jpg)
![Dynamic Seals Dynamic Seals](https://slidetodoc.com/presentation_image_h/837104d0f72ea6cc27bef8ed9e5f3ef1/image-44.jpg)
![Gland Design For Dynamic O-ring Seals Gland Design For Dynamic O-ring Seals](https://slidetodoc.com/presentation_image_h/837104d0f72ea6cc27bef8ed9e5f3ef1/image-45.jpg)
![Reciprocating Motion Reciprocating Motion](https://slidetodoc.com/presentation_image_h/837104d0f72ea6cc27bef8ed9e5f3ef1/image-46.jpg)
![The O-ring’s O. D. is larger than the cylinder bore diameter. Peripheral squeeze is The O-ring’s O. D. is larger than the cylinder bore diameter. Peripheral squeeze is](https://slidetodoc.com/presentation_image_h/837104d0f72ea6cc27bef8ed9e5f3ef1/image-47.jpg)
![Floating O-Rings Advantage Greatly reduced breakout friction Longer seal life Limitations Air pressure less Floating O-Rings Advantage Greatly reduced breakout friction Longer seal life Limitations Air pressure less](https://slidetodoc.com/presentation_image_h/837104d0f72ea6cc27bef8ed9e5f3ef1/image-48.jpg)
![Alternatives to O-Rings U-cup Seals O-rings have a tendency to roll and move in Alternatives to O-Rings U-cup Seals O-rings have a tendency to roll and move in](https://slidetodoc.com/presentation_image_h/837104d0f72ea6cc27bef8ed9e5f3ef1/image-49.jpg)
![Alternatives to O-Rings U-cup Seals Alternatives to O-Rings U-cup Seals](https://slidetodoc.com/presentation_image_h/837104d0f72ea6cc27bef8ed9e5f3ef1/image-50.jpg)
![Typical Applications Typical Applications](https://slidetodoc.com/presentation_image_h/837104d0f72ea6cc27bef8ed9e5f3ef1/image-51.jpg)
![Buffer Seal Buffer seals are one-way seals that protect rod seals from pressure spikes Buffer Seal Buffer seals are one-way seals that protect rod seals from pressure spikes](https://slidetodoc.com/presentation_image_h/837104d0f72ea6cc27bef8ed9e5f3ef1/image-52.jpg)
![Rotary Seals Rotary Seals](https://slidetodoc.com/presentation_image_h/837104d0f72ea6cc27bef8ed9e5f3ef1/image-53.jpg)
![Due to centrifugal force and Gough-Joule effect rotary O-rings are only installed in the Due to centrifugal force and Gough-Joule effect rotary O-rings are only installed in the](https://slidetodoc.com/presentation_image_h/837104d0f72ea6cc27bef8ed9e5f3ef1/image-54.jpg)
![Gough-Joule effect When an elastomer is stretched and heated, it will contract. Gough-Joule effect When an elastomer is stretched and heated, it will contract.](https://slidetodoc.com/presentation_image_h/837104d0f72ea6cc27bef8ed9e5f3ef1/image-55.jpg)
![Rotary O-Ring Limitations O-ring seals are NOT recommended for rotary applications under the following Rotary O-Ring Limitations O-ring seals are NOT recommended for rotary applications under the following](https://slidetodoc.com/presentation_image_h/837104d0f72ea6cc27bef8ed9e5f3ef1/image-56.jpg)
![Rotary Seals Rotary Seals](https://slidetodoc.com/presentation_image_h/837104d0f72ea6cc27bef8ed9e5f3ef1/image-57.jpg)
![Lip Seals Lip seals work well in high speed low pressure rotating shafts Lip Seals Lip seals work well in high speed low pressure rotating shafts](https://slidetodoc.com/presentation_image_h/837104d0f72ea6cc27bef8ed9e5f3ef1/image-58.jpg)
![Main Application of Lip Seals Ball and roller bearing protection As little as 0. Main Application of Lip Seals Ball and roller bearing protection As little as 0.](https://slidetodoc.com/presentation_image_h/837104d0f72ea6cc27bef8ed9e5f3ef1/image-59.jpg)
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![The purpose of the spring is to provide a uniform load on the lip The purpose of the spring is to provide a uniform load on the lip](https://slidetodoc.com/presentation_image_h/837104d0f72ea6cc27bef8ed9e5f3ef1/image-62.jpg)
![There is a tendency for liquids to be pumped from the low angle There is a tendency for liquids to be pumped from the low angle](https://slidetodoc.com/presentation_image_h/837104d0f72ea6cc27bef8ed9e5f3ef1/image-63.jpg)
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![Primary function is retention Primary function is exclusion Primary function is retention Primary function is exclusion](https://slidetodoc.com/presentation_image_h/837104d0f72ea6cc27bef8ed9e5f3ef1/image-65.jpg)
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![Lip Seals To minimize wear The contact pressure should be as low as possible. Lip Seals To minimize wear The contact pressure should be as low as possible.](https://slidetodoc.com/presentation_image_h/837104d0f72ea6cc27bef8ed9e5f3ef1/image-68.jpg)
![V-Seals V-Seals](https://slidetodoc.com/presentation_image_h/837104d0f72ea6cc27bef8ed9e5f3ef1/image-69.jpg)
![Flexi-Lip Rotary Seals Speeds up to 5000 fps Pressures up to 150 psi Material: Flexi-Lip Rotary Seals Speeds up to 5000 fps Pressures up to 150 psi Material:](https://slidetodoc.com/presentation_image_h/837104d0f72ea6cc27bef8ed9e5f3ef1/image-70.jpg)
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![Metallic Seals Metallic seals go where polymers cannot High temperatures (Above 400 to 1800 Metallic Seals Metallic seals go where polymers cannot High temperatures (Above 400 to 1800](https://slidetodoc.com/presentation_image_h/837104d0f72ea6cc27bef8ed9e5f3ef1/image-76.jpg)
![Metal Seals Metal Seals](https://slidetodoc.com/presentation_image_h/837104d0f72ea6cc27bef8ed9e5f3ef1/image-77.jpg)
![C-Ring and Energized C-Ring C-Ring and Energized C-Ring](https://slidetodoc.com/presentation_image_h/837104d0f72ea6cc27bef8ed9e5f3ef1/image-78.jpg)
![E-Ring and O-Ring E-Ring and O-Ring](https://slidetodoc.com/presentation_image_h/837104d0f72ea6cc27bef8ed9e5f3ef1/image-79.jpg)
![U-Ring and Metal Wire U-Ring and Metal Wire](https://slidetodoc.com/presentation_image_h/837104d0f72ea6cc27bef8ed9e5f3ef1/image-80.jpg)
![Combustion Engine Piston Rings First compression ring (1) Second compression ring (2) Oil scraper Combustion Engine Piston Rings First compression ring (1) Second compression ring (2) Oil scraper](https://slidetodoc.com/presentation_image_h/837104d0f72ea6cc27bef8ed9e5f3ef1/image-81.jpg)
![Piston Rings Compression ring Seals the gases in the cylinder Gas pressure forces the Piston Rings Compression ring Seals the gases in the cylinder Gas pressure forces the](https://slidetodoc.com/presentation_image_h/837104d0f72ea6cc27bef8ed9e5f3ef1/image-82.jpg)
![Labyrinth Seals Labyrinth Seals](https://slidetodoc.com/presentation_image_h/837104d0f72ea6cc27bef8ed9e5f3ef1/image-83.jpg)
![Labyrinth Seal Labyrinth Seal](https://slidetodoc.com/presentation_image_h/837104d0f72ea6cc27bef8ed9e5f3ef1/image-84.jpg)
![Labyrinth Seal Labyrinth Seal](https://slidetodoc.com/presentation_image_h/837104d0f72ea6cc27bef8ed9e5f3ef1/image-85.jpg)
![Mechanical Seals Rotating Elements Mechanical Seals Rotating Elements](https://slidetodoc.com/presentation_image_h/837104d0f72ea6cc27bef8ed9e5f3ef1/image-86.jpg)
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- Slides: 87
![Design of ORing Seals Design of O-Ring Seals](https://slidetodoc.com/presentation_image_h/837104d0f72ea6cc27bef8ed9e5f3ef1/image-1.jpg)
Design of O-Ring Seals
![Design of ORing Seals Primary Source of information Design of O-Ring Seals Primary Source of information](https://slidetodoc.com/presentation_image_h/837104d0f72ea6cc27bef8ed9e5f3ef1/image-2.jpg)
Design of O-Ring Seals Primary Source of information
![Why ORings Can be used for static and dynamic applications Compact need very Why O-Rings? Can be used for static and dynamic applications Compact – need very](https://slidetodoc.com/presentation_image_h/837104d0f72ea6cc27bef8ed9e5f3ef1/image-3.jpg)
Why O-Rings? Can be used for static and dynamic applications Compact – need very little space - light weight Easy to incorporate into design Do not require high accuracy Simple design rules Easy to install or remove Easy to service Available in many standard sizes, materials
![Why ORings Wide range of operating temperatures Wide range of operating pressures Good durability Why O-Rings? Wide range of operating temperatures Wide range of operating pressures Good durability](https://slidetodoc.com/presentation_image_h/837104d0f72ea6cc27bef8ed9e5f3ef1/image-4.jpg)
Why O-Rings? Wide range of operating temperatures Wide range of operating pressures Good durability and abrasion resistance O-ring materials for a wide range of chemicals Their failure or deterioration is gradual Inexpensive
![Limitations of Orings Temperature typically between 40 and 400 degrees F Rotary speeds Limitations of O-rings Temperature (typically between -40 and 400 degrees F) Rotary speeds (](https://slidetodoc.com/presentation_image_h/837104d0f72ea6cc27bef8ed9e5f3ef1/image-5.jpg)
Limitations of O-rings Temperature (typically between -40 and 400 degrees F) Rotary speeds ( not to exceeding 1500 feet per minute) For a 2 inch shaft, it is 3000 rpm Vulnerable to sharp edges Require small clearances
![ORings O-Rings](https://slidetodoc.com/presentation_image_h/837104d0f72ea6cc27bef8ed9e5f3ef1/image-6.jpg)
O-Rings
![Popular Oring materials Nitrile BunaN Variety of trade names Copolymer of butadiene and acrylonitrile Popular O-ring materials Nitrile (Buna-N) Variety of trade names Copolymer of butadiene and acrylonitrile](https://slidetodoc.com/presentation_image_h/837104d0f72ea6cc27bef8ed9e5f3ef1/image-7.jpg)
Popular O-ring materials Nitrile (Buna-N) Variety of trade names Copolymer of butadiene and acrylonitrile Most widely used and economical elastomer Temperature Range: Standard Compound: -40° to +257°F Hardness (Shore A): 40 to 90
![Popular Oring materials Nitrile BunaN Excellent resistance to petroleumbased oils and fuels silicone greases Popular O-ring materials Nitrile (Buna-N) Excellent resistance to petroleum-based oils and fuels silicone greases](https://slidetodoc.com/presentation_image_h/837104d0f72ea6cc27bef8ed9e5f3ef1/image-8.jpg)
Popular O-ring materials Nitrile (Buna-N) Excellent resistance to petroleum-based oils and fuels silicone greases hydraulic fluids water and alcohol High tensile strength High abrasion resistance
![Popular Oring materials Nitrile BunaN Applications Oil resistant applications Low temperature uses Offroad equipment Popular O-ring materials Nitrile (Buna-N) Applications Oil resistant applications Low temperature uses Off-road equipment](https://slidetodoc.com/presentation_image_h/837104d0f72ea6cc27bef8ed9e5f3ef1/image-9.jpg)
Popular O-ring materials Nitrile (Buna-N) Applications Oil resistant applications Low temperature uses Off-road equipment Automotive, marine, aircraft fuel systems
![Other Oring Materials Viton FKM Fluorocarbon Viton exceptional resistance to chemicals oils temperature Other O-ring Materials Viton® / FKM: Fluorocarbon (Viton®) exceptional resistance to chemicals, oils, temperature](https://slidetodoc.com/presentation_image_h/837104d0f72ea6cc27bef8ed9e5f3ef1/image-10.jpg)
Other O-ring Materials Viton® / FKM: Fluorocarbon (Viton®) exceptional resistance to chemicals, oils, temperature extremes (-13°F to +446°F), low compression set. Applications include: aircraft engines, automotive fuel handling systems, and chemical processing industries. Ethylene-Propylene / EPDM: EPDM has excellent resistance to heat, water and steam, alkali, mild acidic and solvents, ozone, and sunlight with a temperature range of (-40ºF to +275ºF); but it is not recommended for gasoline, petroleum oil and grease, and hydrocarbon environments.
![Other Oring Materials Fluorosilicone FVMQ Fluorosilicone 75º to 400ºF combines the good high Other O-ring Materials Fluorosilicone / FVMQ: Fluorosilicone (-75º to +400ºF) combines the good high](https://slidetodoc.com/presentation_image_h/837104d0f72ea6cc27bef8ed9e5f3ef1/image-11.jpg)
Other O-ring Materials Fluorosilicone / FVMQ: Fluorosilicone (-75º to +400ºF) combines the good high and low temperature stability of silicones with the fuel, oil, and solvent resistance of fluorocarbons. FVMQ is used for aerospace fuel systems, auto fuel emission control systems. However, due to relatively low tear strength, high friction and limited abrasion resistance of these materials, they are generally not used in dynamic applications.
![Other Oring Materials Silicone VMQ Superior as static seals in extreme temperature conditions Other O-ring Materials Silicone / VMQ: Superior as static seals in extreme temperature conditions.](https://slidetodoc.com/presentation_image_h/837104d0f72ea6cc27bef8ed9e5f3ef1/image-12.jpg)
Other O-ring Materials Silicone / VMQ: Superior as static seals in extreme temperature conditions. Standard compounds handle operating temperatures -85º to +400ºF. Silicone compounds are popular in food and medical applications because they are clean and do not impart odor or taste. Special Phenyl silicones can be used down to -148°F.
![Other Oring Materials Neoprene CR Neoprene 40º to 250ºF features good resistance to Other O-ring Materials Neoprene® / CR: Neoprene (-40º to +250ºF) features good resistance to](https://slidetodoc.com/presentation_image_h/837104d0f72ea6cc27bef8ed9e5f3ef1/image-13.jpg)
Other O-ring Materials Neoprene® / CR: Neoprene (-40º to +250ºF) features good resistance to petroleum oils, ozone, sunlight, relatively low compression set, good resilience and physical toughness. It is the preferred sealing material for the refrigeration industry because of its resistance to ammonia and Freon
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![ORing Seal Design The Oring Specifications Size inside diameter 132 to 26 inches CS O-Ring Seal Design The O-ring Specifications Size (inside diameter) 1/32 to 26 inches CS](https://slidetodoc.com/presentation_image_h/837104d0f72ea6cc27bef8ed9e5f3ef1/image-17.jpg)
O-Ring Seal Design The O-ring Specifications Size (inside diameter) 1/32 to 26 inches CS (Cross-Section) 1/32 to ¼ inch Rigidity (Hardness) Material
![Oring Standards Standard AS 568 ISO 3601 Example AS 016 70 N Nitrile Oring O-ring Standards Standard AS 568 ISO 3601 Example AS 016 -70 N Nitrile O-ring](https://slidetodoc.com/presentation_image_h/837104d0f72ea6cc27bef8ed9e5f3ef1/image-18.jpg)
O-ring Standards Standard AS 568 ISO 3601 Example AS 016 -70 N Nitrile O-ring (AS 568 -016 Size 0. 070 CS x 0. 614 ID)
![Oring Search Tools O-ring Search Tools](https://slidetodoc.com/presentation_image_h/837104d0f72ea6cc27bef8ed9e5f3ef1/image-19.jpg)
O-ring Search Tools
![](https://slidetodoc.com/presentation_image_h/837104d0f72ea6cc27bef8ed9e5f3ef1/image-20.jpg)
![ORing Hardness Measured on ShoreA hardness index Shore 20 A Rubber Band Shore O-Ring Hardness Measured on Shore-A hardness index Shore 20 A = Rubber Band Shore](https://slidetodoc.com/presentation_image_h/837104d0f72ea6cc27bef8ed9e5f3ef1/image-21.jpg)
O-Ring Hardness Measured on Shore-A hardness index Shore 20 A = Rubber Band Shore 40 A = Pencil Eraser Shore 60 A = Car Tire Tread Shore 70 A* = Running Shoe Sole Shore 80 A = Leather Belt Shore 100 A = Shopping Cart Wheel
![](https://slidetodoc.com/presentation_image_h/837104d0f72ea6cc27bef8ed9e5f3ef1/image-22.jpg)
![ORing Properties Fluid resistance Hardness Toughness Volume change swell shrinkage Compression set Thermal O-Ring Properties Fluid resistance Hardness Toughness Volume change (swell / shrinkage) Compression set Thermal](https://slidetodoc.com/presentation_image_h/837104d0f72ea6cc27bef8ed9e5f3ef1/image-23.jpg)
O-Ring Properties Fluid resistance Hardness Toughness Volume change (swell / shrinkage) Compression set Thermal effects Resilience Deterioration Corrosion Permeability Coefficient of friction Coefficient of thermal expansion Compression set relaxation Tensile strength Elongation Tear resistance / Abrasion resistance
![Oring Seal Design The Gland Groove Spacing Depth of groove Width of groove O-ring Seal Design The Gland (Groove + Spacing) Depth of groove Width of groove](https://slidetodoc.com/presentation_image_h/837104d0f72ea6cc27bef8ed9e5f3ef1/image-24.jpg)
O-ring Seal Design The Gland (Groove + Spacing) Depth of groove Width of groove Diameter of bore and piston Surface finish Tolerances
![Static Seals Static Axial Seal Face Seal Static Seals Static Axial Seal (Face Seal)](https://slidetodoc.com/presentation_image_h/837104d0f72ea6cc27bef8ed9e5f3ef1/image-25.jpg)
Static Seals Static Axial Seal (Face Seal)
![Static Seals Static Crush Seal Static Seals Static Crush Seal](https://slidetodoc.com/presentation_image_h/837104d0f72ea6cc27bef8ed9e5f3ef1/image-26.jpg)
Static Seals Static Crush Seal
![Static Seals Static Radial Seal Piston Seal Static Seals Static Radial Seal (Piston Seal)](https://slidetodoc.com/presentation_image_h/837104d0f72ea6cc27bef8ed9e5f3ef1/image-27.jpg)
Static Seals Static Radial Seal (Piston Seal)
![Dynamic Seals Reciprocating Seals Dynamic Seals Reciprocating Seals](https://slidetodoc.com/presentation_image_h/837104d0f72ea6cc27bef8ed9e5f3ef1/image-28.jpg)
Dynamic Seals Reciprocating Seals
![Dynamic Seals Rotary Seals Dynamic Seals Rotary Seals](https://slidetodoc.com/presentation_image_h/837104d0f72ea6cc27bef8ed9e5f3ef1/image-29.jpg)
Dynamic Seals Rotary Seals
![Dynamic Seals Dynamic Seals](https://slidetodoc.com/presentation_image_h/837104d0f72ea6cc27bef8ed9e5f3ef1/image-30.jpg)
Dynamic Seals
![General Design Guidelines Stretch should be less than 5 on the Oring I D General Design Guidelines Stretch should be less than 5% on the O-ring I. D.](https://slidetodoc.com/presentation_image_h/837104d0f72ea6cc27bef8ed9e5f3ef1/image-31.jpg)
General Design Guidelines Stretch should be less than 5% on the O-ring I. D. Groove depth must be smaller than the O-ring CS O-ring should not completely fill the gland Between 75% and 90% Static seal CS should be compressed from 10% to 40% Dynamic seals should be compressed from 10% to 30%
![](https://slidetodoc.com/presentation_image_h/837104d0f72ea6cc27bef8ed9e5f3ef1/image-32.jpg)
![Design of Axial Seal Design of Axial Seal](https://slidetodoc.com/presentation_image_h/837104d0f72ea6cc27bef8ed9e5f3ef1/image-33.jpg)
Design of Axial Seal
![](https://slidetodoc.com/presentation_image_h/837104d0f72ea6cc27bef8ed9e5f3ef1/image-34.jpg)
![Example Design a groove for a 1 5 inch diameter Internal pressure Oring Example Design a groove for a 1. 5 inch diameter Internal pressure O-ring :](https://slidetodoc.com/presentation_image_h/837104d0f72ea6cc27bef8ed9e5f3ef1/image-35.jpg)
Example Design a groove for a 1. 5 inch diameter Internal pressure O-ring : -029 (ID: 1. 489 +/-. 013) (W: . 07 +/-. 003) Material: Buna-N Hardness: 70 Shore-A A: 1. 624 (-0 , +. 005) G: . 125 (-0, +. 01) H: . 049 (-0, +. 005)
![Example Design Checking resulting compression Compression squeeze W H Min Comp Example Design Checking resulting compression Compression (squeeze) = W - H Min. Comp. =](https://slidetodoc.com/presentation_image_h/837104d0f72ea6cc27bef8ed9e5f3ef1/image-36.jpg)
Example Design Checking resulting compression Compression (squeeze) = W - H Min. Comp. = Wmin - Hmax Min. Comp. = 0. 013 in (18. 5%) Max. Comp. = Wmax - Hmin Max. Comp. = 0. 024 in (34. 3%)
![Radial Seal Radial Static Piston Seal Radial Seal Radial Static Piston Seal](https://slidetodoc.com/presentation_image_h/837104d0f72ea6cc27bef8ed9e5f3ef1/image-37.jpg)
Radial Seal Radial Static Piston Seal
![Example Design a groove for a 0 7 inch diameter piston ring Oring Example Design a groove for a 0. 7 inch diameter piston ring O-ring :](https://slidetodoc.com/presentation_image_h/837104d0f72ea6cc27bef8ed9e5f3ef1/image-38.jpg)
Example Design a groove for a 0. 7 inch diameter piston ring O-ring : -029 (ID: . 614 +/-. 009) (W: . 07 +/-. 003) Material: Buna-N Hardness: 70 Shore-A A: . 746 (-0 , +. 002) B: . 745 (-. 001, + 0) C: . 638 (-. 001, + 0)
![Example Design Checking compression Comp W 0 5A C Min Comp Example Design Checking compression Comp = W – 0. 5(A - C) Min. Comp](https://slidetodoc.com/presentation_image_h/837104d0f72ea6cc27bef8ed9e5f3ef1/image-39.jpg)
Example Design Checking compression Comp = W – 0. 5(A - C) Min. Comp = Wmin – 0. 5(Amax – Cmin) Min. Comp. = 0. 0115 in (17. 1%) Max. Comp. = 0. 024 in (26. 0%) Also check Extrusion gap Stretch Squeeze
![](https://slidetodoc.com/presentation_image_h/837104d0f72ea6cc27bef8ed9e5f3ef1/image-40.jpg)
![Radial Static Rod Seal Radial Static Rod Seal](https://slidetodoc.com/presentation_image_h/837104d0f72ea6cc27bef8ed9e5f3ef1/image-41.jpg)
Radial Static Rod Seal
![Static Crush Seal Static Crush Seal](https://slidetodoc.com/presentation_image_h/837104d0f72ea6cc27bef8ed9e5f3ef1/image-42.jpg)
Static Crush Seal
![Static Crush Seal Static Crush Seal](https://slidetodoc.com/presentation_image_h/837104d0f72ea6cc27bef8ed9e5f3ef1/image-43.jpg)
Static Crush Seal
![Dynamic Seals Dynamic Seals](https://slidetodoc.com/presentation_image_h/837104d0f72ea6cc27bef8ed9e5f3ef1/image-44.jpg)
Dynamic Seals
![Gland Design For Dynamic Oring Seals Gland Design For Dynamic O-ring Seals](https://slidetodoc.com/presentation_image_h/837104d0f72ea6cc27bef8ed9e5f3ef1/image-45.jpg)
Gland Design For Dynamic O-ring Seals
![Reciprocating Motion Reciprocating Motion](https://slidetodoc.com/presentation_image_h/837104d0f72ea6cc27bef8ed9e5f3ef1/image-46.jpg)
Reciprocating Motion
![The Orings O D is larger than the cylinder bore diameter Peripheral squeeze is The O-ring’s O. D. is larger than the cylinder bore diameter. Peripheral squeeze is](https://slidetodoc.com/presentation_image_h/837104d0f72ea6cc27bef8ed9e5f3ef1/image-47.jpg)
The O-ring’s O. D. is larger than the cylinder bore diameter. Peripheral squeeze is applied to the O. D. as the O-ring is installed into the bore. Incoming air pressure forces the O-ring against the walls sealing
![Floating ORings Advantage Greatly reduced breakout friction Longer seal life Limitations Air pressure less Floating O-Rings Advantage Greatly reduced breakout friction Longer seal life Limitations Air pressure less](https://slidetodoc.com/presentation_image_h/837104d0f72ea6cc27bef8ed9e5f3ef1/image-48.jpg)
Floating O-Rings Advantage Greatly reduced breakout friction Longer seal life Limitations Air pressure less than 200 psi in pneumatic cylinders In hydraulic systems small amount of leakage must be permissible Floating O-rings are NOT suitable as rod seals
![Alternatives to ORings Ucup Seals Orings have a tendency to roll and move in Alternatives to O-Rings U-cup Seals O-rings have a tendency to roll and move in](https://slidetodoc.com/presentation_image_h/837104d0f72ea6cc27bef8ed9e5f3ef1/image-49.jpg)
Alternatives to O-Rings U-cup Seals O-rings have a tendency to roll and move in reciprocating motions U-cups create more sealing as the pressure increases U-cups require less precision for the associated hardware
![Alternatives to ORings Ucup Seals Alternatives to O-Rings U-cup Seals](https://slidetodoc.com/presentation_image_h/837104d0f72ea6cc27bef8ed9e5f3ef1/image-50.jpg)
Alternatives to O-Rings U-cup Seals
![Typical Applications Typical Applications](https://slidetodoc.com/presentation_image_h/837104d0f72ea6cc27bef8ed9e5f3ef1/image-51.jpg)
Typical Applications
![Buffer Seal Buffer seals are oneway seals that protect rod seals from pressure spikes Buffer Seal Buffer seals are one-way seals that protect rod seals from pressure spikes](https://slidetodoc.com/presentation_image_h/837104d0f72ea6cc27bef8ed9e5f3ef1/image-52.jpg)
Buffer Seal Buffer seals are one-way seals that protect rod seals from pressure spikes yet allow fluid (lubricant) to reach the main seal
![Rotary Seals Rotary Seals](https://slidetodoc.com/presentation_image_h/837104d0f72ea6cc27bef8ed9e5f3ef1/image-53.jpg)
Rotary Seals
![Due to centrifugal force and GoughJoule effect rotary Orings are only installed in the Due to centrifugal force and Gough-Joule effect rotary O-rings are only installed in the](https://slidetodoc.com/presentation_image_h/837104d0f72ea6cc27bef8ed9e5f3ef1/image-54.jpg)
Due to centrifugal force and Gough-Joule effect rotary O-rings are only installed in the housing not on the shaft
![GoughJoule effect When an elastomer is stretched and heated it will contract Gough-Joule effect When an elastomer is stretched and heated, it will contract.](https://slidetodoc.com/presentation_image_h/837104d0f72ea6cc27bef8ed9e5f3ef1/image-55.jpg)
Gough-Joule effect When an elastomer is stretched and heated, it will contract.
![Rotary ORing Limitations Oring seals are NOT recommended for rotary applications under the following Rotary O-Ring Limitations O-ring seals are NOT recommended for rotary applications under the following](https://slidetodoc.com/presentation_image_h/837104d0f72ea6cc27bef8ed9e5f3ef1/image-56.jpg)
Rotary O-Ring Limitations O-ring seals are NOT recommended for rotary applications under the following conditions: Pressures exceeding 900 psi Temperatures lower than -40° F or higher than 225° F Surface speeds exceeding 600 feet per minute (fpm). 2300 rpm for 1 inch diameter shaft 1150 rpm for 2 inch diameter shaft
![Rotary Seals Rotary Seals](https://slidetodoc.com/presentation_image_h/837104d0f72ea6cc27bef8ed9e5f3ef1/image-57.jpg)
Rotary Seals
![Lip Seals Lip seals work well in high speed low pressure rotating shafts Lip Seals Lip seals work well in high speed low pressure rotating shafts](https://slidetodoc.com/presentation_image_h/837104d0f72ea6cc27bef8ed9e5f3ef1/image-58.jpg)
Lip Seals Lip seals work well in high speed low pressure rotating shafts
![Main Application of Lip Seals Ball and roller bearing protection As little as 0 Main Application of Lip Seals Ball and roller bearing protection As little as 0.](https://slidetodoc.com/presentation_image_h/837104d0f72ea6cc27bef8ed9e5f3ef1/image-59.jpg)
Main Application of Lip Seals Ball and roller bearing protection As little as 0. 002% water in lubrication oil can reduce ball bearing life by 50% Solid particles cause rapid damage to the bearing races.
![](https://slidetodoc.com/presentation_image_h/837104d0f72ea6cc27bef8ed9e5f3ef1/image-60.jpg)
![](https://slidetodoc.com/presentation_image_h/837104d0f72ea6cc27bef8ed9e5f3ef1/image-61.jpg)
![The purpose of the spring is to provide a uniform load on the lip The purpose of the spring is to provide a uniform load on the lip](https://slidetodoc.com/presentation_image_h/837104d0f72ea6cc27bef8ed9e5f3ef1/image-62.jpg)
The purpose of the spring is to provide a uniform load on the lip The spring keeps the seal lip in contact with the shaft during higher speeds and also overcomes compression set and wear of the lip material.
![There is a tendency for liquids to be pumped from the low angle There is a tendency for liquids to be pumped from the low angle](https://slidetodoc.com/presentation_image_h/837104d0f72ea6cc27bef8ed9e5f3ef1/image-63.jpg)
There is a tendency for liquids to be pumped from the low angle side towards the high angle side. Underneath the flattened area a thin fluid film is formed. Its thickness must be between 1 and 3 µm to avoid leakage
![](https://slidetodoc.com/presentation_image_h/837104d0f72ea6cc27bef8ed9e5f3ef1/image-64.jpg)
![Primary function is retention Primary function is exclusion Primary function is retention Primary function is exclusion](https://slidetodoc.com/presentation_image_h/837104d0f72ea6cc27bef8ed9e5f3ef1/image-65.jpg)
Primary function is retention Primary function is exclusion
![](https://slidetodoc.com/presentation_image_h/837104d0f72ea6cc27bef8ed9e5f3ef1/image-66.jpg)
![](https://slidetodoc.com/presentation_image_h/837104d0f72ea6cc27bef8ed9e5f3ef1/image-67.jpg)
![Lip Seals To minimize wear The contact pressure should be as low as possible Lip Seals To minimize wear The contact pressure should be as low as possible.](https://slidetodoc.com/presentation_image_h/837104d0f72ea6cc27bef8ed9e5f3ef1/image-68.jpg)
Lip Seals To minimize wear The contact pressure should be as low as possible. Shaft surface should be smooth to 0. 25 - 0. 5µm. There must be enough fluid to form a hydrodynamic film Fluid pressure must be low (0 -3 psi )
![VSeals V-Seals](https://slidetodoc.com/presentation_image_h/837104d0f72ea6cc27bef8ed9e5f3ef1/image-69.jpg)
V-Seals
![FlexiLip Rotary Seals Speeds up to 5000 fps Pressures up to 150 psi Material Flexi-Lip Rotary Seals Speeds up to 5000 fps Pressures up to 150 psi Material:](https://slidetodoc.com/presentation_image_h/837104d0f72ea6cc27bef8ed9e5f3ef1/image-70.jpg)
Flexi-Lip Rotary Seals Speeds up to 5000 fps Pressures up to 150 psi Material: PTFE, graphite
![](https://slidetodoc.com/presentation_image_h/837104d0f72ea6cc27bef8ed9e5f3ef1/image-71.jpg)
![](https://slidetodoc.com/presentation_image_h/837104d0f72ea6cc27bef8ed9e5f3ef1/image-72.jpg)
![](https://slidetodoc.com/presentation_image_h/837104d0f72ea6cc27bef8ed9e5f3ef1/image-73.jpg)
![](https://slidetodoc.com/presentation_image_h/837104d0f72ea6cc27bef8ed9e5f3ef1/image-74.jpg)
![](https://slidetodoc.com/presentation_image_h/837104d0f72ea6cc27bef8ed9e5f3ef1/image-75.jpg)
![Metallic Seals Metallic seals go where polymers cannot High temperatures Above 400 to 1800 Metallic Seals Metallic seals go where polymers cannot High temperatures (Above 400 to 1800](https://slidetodoc.com/presentation_image_h/837104d0f72ea6cc27bef8ed9e5f3ef1/image-76.jpg)
Metallic Seals Metallic seals go where polymers cannot High temperatures (Above 400 to 1800 Degree F) Cryogenic temperatures (below − 238 °F) High pressures (3000 psi to 60000 psi) High speeds
![Metal Seals Metal Seals](https://slidetodoc.com/presentation_image_h/837104d0f72ea6cc27bef8ed9e5f3ef1/image-77.jpg)
Metal Seals
![CRing and Energized CRing C-Ring and Energized C-Ring](https://slidetodoc.com/presentation_image_h/837104d0f72ea6cc27bef8ed9e5f3ef1/image-78.jpg)
C-Ring and Energized C-Ring
![ERing and ORing E-Ring and O-Ring](https://slidetodoc.com/presentation_image_h/837104d0f72ea6cc27bef8ed9e5f3ef1/image-79.jpg)
E-Ring and O-Ring
![URing and Metal Wire U-Ring and Metal Wire](https://slidetodoc.com/presentation_image_h/837104d0f72ea6cc27bef8ed9e5f3ef1/image-80.jpg)
U-Ring and Metal Wire
![Combustion Engine Piston Rings First compression ring 1 Second compression ring 2 Oil scraper Combustion Engine Piston Rings First compression ring (1) Second compression ring (2) Oil scraper](https://slidetodoc.com/presentation_image_h/837104d0f72ea6cc27bef8ed9e5f3ef1/image-81.jpg)
Combustion Engine Piston Rings First compression ring (1) Second compression ring (2) Oil scraper ring (3)
![Piston Rings Compression ring Seals the gases in the cylinder Gas pressure forces the Piston Rings Compression ring Seals the gases in the cylinder Gas pressure forces the](https://slidetodoc.com/presentation_image_h/837104d0f72ea6cc27bef8ed9e5f3ef1/image-82.jpg)
Piston Rings Compression ring Seals the gases in the cylinder Gas pressure forces the ring against the cylinder wall Wiper ring (secondary compression ring) Seals the gases that escape the compression ring Wipes excess oil from cylinder wall Oil ring Made of two thin rails with slots Wipes excess oil from cylinder walls through port holes
![Labyrinth Seals Labyrinth Seals](https://slidetodoc.com/presentation_image_h/837104d0f72ea6cc27bef8ed9e5f3ef1/image-83.jpg)
Labyrinth Seals
![Labyrinth Seal Labyrinth Seal](https://slidetodoc.com/presentation_image_h/837104d0f72ea6cc27bef8ed9e5f3ef1/image-84.jpg)
Labyrinth Seal
![Labyrinth Seal Labyrinth Seal](https://slidetodoc.com/presentation_image_h/837104d0f72ea6cc27bef8ed9e5f3ef1/image-85.jpg)
Labyrinth Seal
![Mechanical Seals Rotating Elements Mechanical Seals Rotating Elements](https://slidetodoc.com/presentation_image_h/837104d0f72ea6cc27bef8ed9e5f3ef1/image-86.jpg)
Mechanical Seals Rotating Elements
![](https://slidetodoc.com/presentation_image_h/837104d0f72ea6cc27bef8ed9e5f3ef1/image-87.jpg)
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