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Oil-Resistant Buna-N O-Rings
![](/prerenderstable/mvPRE/contents/gfx/imagecache/945/9452k111p1-upj05-@halfx_637689314328887851.png?ver=imagenotfound)
Made of Buna-N, these O-rings resist grease, hydraulic oil, and motor oil—plus mild chemicals and water. However, Buna-N is not for use with brake fluid. These O-rings are commonly used to create multidirectional seals between two parts in power transmission assemblies, hydraulic cylinders, and pneumatic cylinders. With a round profile, they resist compression and tearing to keep their shape over time, so they’re reusable. All have shelf life, cure date, and a traceable lot number printed on the bag. Many meet ASTM D2000 and SAE J200, international standards for rubber products.
Inch O-rings have a dash number and are sized to the SAE standard AS568.
For technical drawings and 3-D models, click on a part number.
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Fractional | Actual | ||||||||||
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Dash Number | ID | OD | ID | OD | Hardness | Specifications Met | Temperature Range, °F | Color | Pkg. Qty. | Pkg. | |
Wd.: 3/16 Fractional (0.21" Actual) | |||||||||||
324 | 1 3/8 | 1 3/4 | 1.35" | 1.77" | Durometer 70A (Medium) | ASTM D2000, SAE AS568, SAE J200 | -20° to 250° | Black | 50 | 00000000 | 000000 |
Oil-Resistant Hard Buna-N O-Rings
Offering better wear resistance than standard Buna-N O-rings, these hard O-rings are also resilient and tear resistant. They resist grease, petroleum fluids, and motor oil. All have a round profile and are suitable for a wide range of static and dynamic sealing applications.
Inch O-rings have a dash number and are sized to the SAE standard AS568.
For technical drawings and 3-D models, click on a part number.
![](/prerenderstable/mvPRE/contents/gfx/imagecache/110/1108t118c1-1632921814-p9@halfx_637685006416554387.png?ver=imagenotfound)
Fractional | Actual | ||||||||||
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Dash Number | ID | OD | ID | OD | Hardness | Specifications Met | Temperature Range, °F | Color | Pkg. Qty. | Pkg. | |
Wd.: 3/16 Fractional (0.21" Actual) | |||||||||||
324 | 1 3/8 | 1 3/4 | 1.35" | 1.77" | Durometer 90A (Hard) | ASTM D2000, SAE AS568, SAE J200 | -30° to 250° | Black | 50 | 00000000 | 000000 |
X-Profile Oil-Resistant Buna-N O-Rings
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Also known as Quattro Seals and X-rings, these X-profile O-rings have four points of contact for a better seal in dynamic applications than round-profile O-rings. They also require less compression to make a seal, so they offer a longer service life. These O-rings are made of Buna-N, which is resilient and tear resistant. They resist motor oil. These O-rings are sized to the SAE standard AS568.
For technical drawings and 3-D models, click on a part number.
Fractional | Actual | ||||||||||
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Dash Number | ID | OD | ID | OD | Hardness | Specifications Met | Temperature Range, °F | Color | Pkg. Qty. | Pkg. | |
Wd.: 3/16 Fractional (0.21" Actual) | |||||||||||
324 | 1 3/8 | 1 3/4 | 1.35" | 1.77" | Durometer 70A (Medium) | ASTM D2000, SAE AS568, SAE J200 | -30° to 225° | Black | 25 | 000000000 | 000000 |
Oil-Resistant Mil. Spec. Buna-N O-Rings
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Choose these O-rings for their adherence to strict military standards for material and construction. Made of Buna-N, they are resilient and offer resistance to tearing, motor oil, ammonia, ethylene glycol, isopropyl alcohol, and mineral oil. These O-rings have a round profile and are suitable for a wide range of static and dynamic sealing applications. All are sized to the SAE standard AS568.
For technical drawings and 3-D models, click on a part number.
Fractional | Actual | ||||||||||
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Dash Number | ID | OD | ID | OD | Hardness | Specifications Met | Temp. Range, °F | Color | Pkg. Qty. | Pkg. | |
Wd.: 3/16 Fractional (0.21" Actual) | |||||||||||
324 | 1 3/8 | 1 3/4 | 1.35" | 1.77" | Durometer 65A (Medium) | ASTM D2000, MIL-I-45208, SAE AS3578, SAE AS568, SAE J200 | -20° to 250° | Black | 10 | 00000000 | 000000 |
324 | 1 3/8 | 1 3/4 | 1.35" | 1.77" | Durometer 65A (Medium) | ASTM D2000, MIL-P-5315, SAE AS568, SAE J200 | -65° to 155° | Black | 10 | 00000000 | 00000 |
Oil- and Abrasion-Resistant Polyurethane O-Rings
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More abrasion resistant than Buna-N O-rings, these polyurethane O-rings resist mineral oil, motor oil, and ethylene glycol. They have a round profile and are suitable for a wide range of static and dynamic sealing applications. All are sized to the SAE standard AS568.
For technical drawings and 3-D models, click on a part number.
Fractional | Actual | ||||||||||
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Dash Number | ID | OD | ID | OD | Hardness | Specifications Met | Temperature Range, °F | Color | Pkg. Qty. | Pkg. | |
Wd.: 3/16 Fractional (0.21"Actual) | |||||||||||
324 | 1 3/8 | 1 3/4 | 1.35" | 1.77" | Durometer 70A (Medium) | ASTM D2000, SAE AS568, SAE J200 | -40° to 200° | Black | 1 | 00000000 | 00000 |
Ultra-Strength Oil- and Abrasion-Resistant Polyurethane O-Rings
![](/prerenderstable/mvPRE/contents/gfx/imagecache/130/1307n114p1-upd03-@halfx_637684321654137698.png?ver=imagenotfound)
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These O-rings are harder and stronger than standard polyurethane O-rings to handle high-pressure applications. They resist mineral oil, motor oil, grease, hydraulic oils, and synthetic lubricants. All have a round profile and are suitable for a wide range of static and dynamic sealing applications. These O-rings are sized to the SAE standard AS568.
For technical drawings and 3-D models, click on a part number.
Fractional | Actual | |||||||||
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Dash Number | ID | OD | ID | OD | Hardness | Temperature Range, °F | Color | Pkg. Qty. | Pkg. | |
Wd.: 3/16 Fractional (0.21" Actual) | ||||||||||
324 | 1 3/8 | 1 3/4 | 1.35" | 1.77" | Durometer 90A (Hard) | -65° to 275° | Cream | 1 | 00000000 | 00000 |
Chemical-Resistant Viton® Fluoroelastomer O-Rings
These Viton® fluoroelastomer O-rings resist a wide range of chemicals, including benzene, butyl alcohol, and ethylene glycol. They have a round profile and are suitable for both static and dynamic sealing applications.
Inch O-rings have a dash number and are sized to the SAE standard AS568.
For technical drawings and 3-D models, click on a part number.
![](/prerenderstable/mvPRE/contents/gfx/imagecache/110/1108t118c1-1632921814-p9@halfx_637685006416554387.png?ver=imagenotfound)
Fractional | Actual | ||||||||||
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Dash Number | ID | OD | ID | OD | Hardness | Specifications Met | Temperature Range, °F | Color | Pkg. Qty. | Pkg. | |
Wd.: 3/16 Fractional (0.21" Actual) | |||||||||||
324 | 1 3/8 | 1 3/4 | 1.35" | 1.77" | Durometer 75A (Medium) | ASTM D2000, SAE AS568, SAE J200 | 0° to 400° | Black | 10 | 00000000 | 000000 |
Chemical-Resistant Brown Viton® Fluoroelastomer O-Rings
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Because one black O-ring looks just like another, these Viton® fluoroelastomer O-rings are brown for easy identification. They resist a wide range of chemicals, including benzene, butyl alcohol, and ethylene glycol. All have a round profile and are suitable for both static and dynamic sealing applications. O-rings have shelf life, cure date, and traceable lot number printed on the bag.
Inch O-rings have a dash number and are sized to the SAE standard AS568.
For technical drawings and 3-D models, click on a part number.
![](/prerenderstable/mvPRE/contents/gfx/imagecache/110/1108t118c1-1633352513-p9@halfx_637689313184887004.png?ver=imagenotfound)
Fractional | Actual | ||||||||||
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Dash Number | ID | OD | ID | OD | Hardness | Specifications Met | Temperature Range, °F | Color | Pkg. Qty. | Pkg. | |
Wd.: 3/16 Fractional (0.21" Actual) | |||||||||||
324 | 1 3/8 | 1 3/4 | 1.35" | 1.77" | Durometer 75A (Medium) | ASTM D2000, SAE AS568, SAE J200 | -15° to 390° | Brown | 10 | 00000000 | 000000 |
Ultra-Chemical-Resistant FEP-Encapsulated Viton® Fluoroelastomer O-Rings
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![](/prerenderstable/mvPRE/contents/gfx/imagecache/934/93445k414-1568213271-p9@halfx_637037925471877469.png?ver=imagenotfound)
If the FEP casing on these O-rings wears away, the Viton® fluoroelastomer core will continue to ward off chemicals. They are just as chemical resistant as PTFE O-rings, but the core is soft to make them more compressible. These O-rings resist acetone, solvents, methanol, and boric acid. They have a round profile and are suitable for a wide range of static and dynamic sealing applications. All are sized to the SAE standard AS568.
For technical drawings and 3-D models, click on a part number.
Fractional | Actual | ||||||||||
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Dash Number | ID | OD | ID | OD | Casing Hardness | Core Hardness | Specifications Met | Temperature Range, °F | Color | Each | |
Wd.:3/16 Fractional (0.21" Actual) | |||||||||||
324 | 1 3/8 | 1 3/4 | 1.35" | 1.77" | Durometer 55D (Hard) | Durometer 75A (Medium) | ASTM D2000, ASTM D2116, SAE AS568, SAE J200 | -15° to 400° | Clear with Black Inner Ring | 000000000 | 000000 |
Ultra-Chemical-Resistant FEP-Encapsulated Silicone O-Rings
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The FEP casing on these O-rings provides the same level of resistance to harsh chemicals as PTFE O-rings, but the silicone core is soft to make these O-rings more compressible. They resist acetone, solvents, methanol, and boric acid. All have a round profile and are suitable for a wide range of static and dynamic sealing applications. These O-rings are sized to the SAE standard AS568.
For technical drawings and 3-D models, click on a part number.
Fractional | Actual | ||||||||||
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Dash Number | ID | OD | ID | OD | Casing Hardness | Core Hardness | Specifications Met | Temperature Range, °F | Color | Each | |
Wd.:3/16 Fractional (0.21" Actual) | |||||||||||
324 | 1 3/8 | 1 3/4 | 1.35" | 1.77" | Durometer 55D (Hard) | Durometer 70A (Medium) | ASTM D2000, FDA Compliant 21 CFR 177.1550, FDA Compliant 21 CFR 177.2600, SAE AS568, SAE J200 | -75° to 400° | Clear with Red Inner Ring | 00000000 | 00000 |
Ultra-Chemical-Resistant Rigid PTFE O-Rings
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Rigid and hard with a slippery surface, these PTFE O-rings resist harsh chemicals, such as acetone, fluorinated solvents, methanol, and boric acid. They have a round profile and are suitable for a wide range of static and dynamic sealing applications.
Inch O-rings have a dash number and are sized to the SAE standard AS568.
For technical drawings and 3-D models, click on a part number.
![](/prerenderstable/mvPRE/contents/gfx/imagecache/130/1307n106c1-1632858262-p9@halfx_637684370678481044.png?ver=imagenotfound)
Fractional | Actual | ||||||||||
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Dash Number | ID | OD | ID | OD | Hardness | Specifications Met | Temperature Range, °F | Color | Pkg. Qty. | Pkg. | |
Wd.: 3/16 Fractional (0.21" Actual) | |||||||||||
324 | 1 3/8 | 1 3/4 | 1.35" | 1.77" | Durometer 55D (Hard) | FDA Compliant 21 CFR 177.1550, SAE AS568 | -300° to 500° | White | 2 | 0000000 | 00000 |
High-Temperature Silicone O-Rings
These silicone O-rings withstand temperatures up to 400° F or 450° F. They have a round profile and are suitable for a wide range of static sealing applications. All have a cure date and a traceable lot number printed on the bag.
Inch O-rings have a dash number. USP VI Certified, they meet testing requirements for material quality.
For technical drawings and 3-D models, click on a part number.
![](/prerenderstable/mvPRE/contents/gfx/imagecache/110/1108t118c1-1632922826-p9@halfx_637685016281780726.png?ver=imagenotfound)
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Dash Number | ID | OD | ID | OD | Hardness | Specifications Met | Temperature Range, °F | Color | Pkg. Qty. | Pkg. | |
Wd.: 3/16 Fractional (0.21" Actual) | |||||||||||
324 | 1 3/8 | 1 3/4 | 1.35" | 1.77" | Durometer 70A (Medium) | ASTM D2000, FDA Compliant 21 CFR 177.2600, SAE AS568, SAE J200, USP VI Certified | -60° to 400° | Red | 10 | 00000000 | 000000 |
High-Temperature Soft Silicone O-Rings
![](/prerenderstable/mvPRE/contents/gfx/imagecache/117/1173n013p1-upj05-@halfx_637686812322034260.png?ver=imagenotfound)
![](/prerenderstable/mvPRE/contents/gfx/imagecache/110/1108t118c1-1633114395-p9@halfx_637686931997426567.png?ver=imagenotfound)
Able to withstand temperatures up to 400° F, these silicone O-rings are softer than standard silicone O-rings for a better seal in low-pressure applications. They have a round profile and are suitable for a wide range of static and dynamic sealing applications. All are sized to the SAE standard AS568.
For technical drawings and 3-D models, click on a part number.
Fractional | Actual | ||||||||||
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Dash Number | ID | OD | ID | OD | Hardness | Specifications Met | Temperature Range, °F | Color | Pkg. Qty. | Pkg. | |
Wd.: 3/16 Fractional (0.21" Actual) | |||||||||||
324 | 1 3/8 | 1 3/4 | 1.35" | 1.77" | Durometer 50A (Soft) | ASTM D2000, SAE AS568 | -85° to 400° | Red | 1 | 00000000 | 00000 |
Water- and Steam-Resistant EPDM O-Rings
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These EPDM O-rings resist water, steam, ethanol, and ethylene glycol. They have a round profile and are suitable for a wide range of static and dynamic sealing applications. All are sized to the SAE standard AS568.
For technical drawings and 3-D models, click on a part number.
Fractional | Actual | ||||||||||
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Dash Number | ID | OD | ID | OD | Hardness | Specifications Met | Temperature Range, °F | Color | Pkg. Qty. | Pkg. | |
Wd.: 3/16 Fractional (0.21" Actual) | |||||||||||
324 | 1 3/8 | 1 3/4 | 1.35" | 1.77" | Durometer 70A (Medium) | ASTM D2000, SAE AS568, SAE J200 | -70° to 250° | Black | 40 | 00000000 | 000000 |
Water- and Steam-Resistant High-Temperature EPDM O-Rings
![](/prerenderstable/mvPRE/contents/gfx/imagecache/945/9452k111p1-upj05-@halfx_637689314328887851.png?ver=imagenotfound)
These O-rings withstand higher temperatures than standard EPDM O-rings. They resist water, steam, ethanol, and ethylene glycol. All have a round profile and are suitable for a wide range of static and dynamic sealing applications. These O-rings have shelf life, cure date, and traceable lot number printed on the bag.
Inch O-rings have a dash number and are sized to the SAE standard AS568.
For technical drawings and 3-D models, click on a part number.
![](/prerenderstable/mvPRE/contents/gfx/imagecache/110/1108t118c1-1633352513-p9@halfx_637689313184887004.png?ver=imagenotfound)
Fractional | Actual | ||||||||||
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Dash Number | ID | OD | ID | OD | Hardness | Specifications Met | Temperature Range, °F | Color | Pkg. Qty. | Pkg. | |
Wd.: 3/16 Fractional (0.21" Actual) | |||||||||||
324 | 1 3/8 | 1 3/4 | 1.35" | 1.77" | Durometer 70A (Medium) | ASTM D2000 | -70° to 300° | Black | 10 | 00000000 | 00000 |