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DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense AcquisitionRegulations Supplement) |
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REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration,Evaluation, Authorization and Restriction of Chemicals) |
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RoHS (Restriction of Hazardous Substances) RoHS (Restriction ofHazardous Substances) |
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About O-Rings
More
Made-to-Order Oil-Resistant Buna-N O-Rings

When you need a Buna-N O-ring that’s not an industry standard size, we can make one to fit your requirements. These O-rings resist grease, hydraulic oils, and motor oil, plus they're resilient and offer excellent tear resistance. They have a round profile and are suitable for a wide range of static and dynamic sealing applications.
Wd. | |||||||||
---|---|---|---|---|---|---|---|---|---|
Fractional | Actual | ID Range | Specifications Met | Hardness | Temperature Range, °F | Color | Pkg. Qty. | Pkg. | |
1/16 | 0.07" | 2.5" to 50" | ASTM D2000 | Durometer 70A (Medium) | -20° to 250° | Black | 10 | 0000000 | 000000 |
3/32 | 0.103" | 2.5" to 50" | ASTM D2000 | Durometer 70A (Medium) | -20° to 250° | Black | 10 | 0000000 | 00000 |
1/8 | 0.125" | 2.5" to 50" | ASTM D2000 | Durometer 70A (Medium) | -20° to 250° | Black | 10 | 0000000 | 00000 |
1/8 | 0.139" | 2.5" to 50" | ASTM D2000 | Durometer 70A (Medium) | -20° to 250° | Black | 10 | 0000000 | 00000 |
3/16 | 0.21" | 2.5" to 50" | ASTM D2000 | Durometer 70A (Medium) | -20° to 250° | Black | 10 | 0000000 | 00000 |
1/4 | 0.25" | 2.5" to 50" | ASTM D2000 | Durometer 70A (Medium) | -20° to 250° | Black | 10 | 0000000 | 00000 |
1/4 | 0.275" | 2.5" to 50" | ASTM D2000 | Durometer 70A (Medium) | -20° to 250° | Black | 10 | 0000000 | 00000 |
5/16 | 0.312" | 2.5" to 50" | ASTM D2000 | Durometer 70A (Medium) | -20° to 250° | Black | 10 | 0000000 | 00000 |
3/8 | 0.375" | 2.5" to 50" | ASTM D2000 | Durometer 70A (Medium) | -20° to 250° | Black | 10 | 0000000 | 00000 |
Wd., mm | ID Range, mm | Specifications Met | Hardness | Temperature Range, °F | Color | Pkg. Qty. | Pkg. | |
1.5 | 63.5 to 1,300 | ASTM D2000 | Durometer 70A (Medium) | -20° to 250° | Black | 10 | 0000000 | 000000 |
2 | 63.5 to 1,300 | ASTM D2000 | Durometer 70A (Medium) | -20° to 250° | Black | 10 | 0000000 | 00000 |
2.5 | 63.5 to 1,300 | ASTM D2000 | Durometer 70A (Medium) | -20° to 250° | Black | 10 | 0000000 | 00000 |
3 | 63.5 to 1,300 | ASTM D2000 | Durometer 70A (Medium) | -20° to 250° | Black | 10 | 0000000 | 00000 |
3.5 | 63.5 to 1,300 | ASTM D2000 | Durometer 70A (Medium) | -20° to 250° | Black | 10 | 0000000 | 00000 |
4 | 63.5 to 1,300 | ASTM D2000 | Durometer 70A (Medium) | -20° to 250° | Black | 10 | 0000000 | 00000 |
4.5 | 63.5 to 1,300 | ASTM D2000 | Durometer 70A (Medium) | -20° to 250° | Black | 10 | 00000000 | 00000 |
5 | 63.5 to 1,300 | ASTM D2000 | Durometer 70A (Medium) | -20° to 250° | Black | 10 | 0000000 | 00000 |
5.5 | 63.5 to 1,300 | ASTM D2000 | Durometer 70A (Medium) | -20° to 250° | Black | 10 | 00000000 | 00000 |
5.7 | 63.5 to 1,300 | ASTM D2000 | Durometer 70A (Medium) | -20° to 250° | Black | 10 | 0000000 | 00000 |
6 | 63.5 to 1,300 | ASTM D2000 | Durometer 70A (Medium) | -20° to 250° | Black | 10 | 00000000 | 00000 |
8 | 63.5 to 1,300 | ASTM D2000 | Durometer 70A (Medium) | -20° to 250° | Black | 10 | 0000000 | 00000 |
Made-to-Order High-Temperature Silicone O-Rings

When you need a silicone O-ring that’s not an industry standard size, we can make one to fit your requirements. These O-rings withstand temperatures up to 450° F. They have a round profile and are suitable for a wide range of static and dynamic sealing applications.
Wd. | |||||||||
---|---|---|---|---|---|---|---|---|---|
Fractional | Actual | ID Range | Specifications Met | Hardness | Temperature Range, °F | Color | Pkg. Qty. | Pkg. | |
1/16 | 0.07" | 2 1/2" to 50" | ASTM D2000 | Durometer 70A (Medium) | -80° to 450° | Red | 10 | 00000000 | 000000 |
3/32 | 0.103" | 2 1/2" to 50" | ASTM D2000 | Durometer 70A (Medium) | -80° to 450° | Red | 10 | 00000000 | 00000 |
1/8 | 0.125" | 2 1/2" to 50" | ASTM D2000 | Durometer 70A (Medium) | -80° to 450° | Red | 10 | 00000000 | 00000 |
1/8 | 0.139" | 2 1/2" to 50" | ASTM D2000 | Durometer 70A (Medium) | -80° to 450° | Red | 10 | 00000000 | 00000 |
3/16 | 0.21" | 2 1/2" to 50" | ASTM D2000 | Durometer 70A (Medium) | -80° to 450° | Red | 10 | 00000000 | 00000 |
1/4 | 0.25" | 2 1/2" to 50" | ASTM D2000 | Durometer 70A (Medium) | -80° to 450° | Red | 10 | 00000000 | 00000 |
1/4 | 0.275" | 2 1/2" to 50" | ASTM D2000 | Durometer 70A (Medium) | -80° to 450° | Red | 10 | 00000000 | 00000 |
5/16 | 0.312" | 2 1/2" to 50" | ASTM D2000 | Durometer 70A (Medium) | -80° to 450° | Red | 10 | 00000000 | 00000 |
3/8 | 0.375" | 2 1/2" to 50" | ASTM D2000 | Durometer 70A (Medium) | -80° to 450° | Red | 5 | 00000000 | 00000 |
Wd., mm | ID Range, mm | Specifications Met | Hardness | Temperature Range, °F | Color | Pkg. Qty. | Pkg. | |
1.5 | 63.5 to 1,300 | ASTM D2000 | Durometer 70A (Medium) | -80° to 450° | Red | 10 | 00000000 | 000000 |
2 | 63.5 to 1,300 | ASTM D2000 | Durometer 70A (Medium) | -80° to 450° | Red | 10 | 00000000 | 00000 |
2.5 | 63.5 to 1,300 | ASTM D2000 | Durometer 70A (Medium) | -80° to 450° | Red | 10 | 00000000 | 00000 |
3 | 63.5 to 1,300 | ASTM D2000 | Durometer 70A (Medium) | -80° to 450° | Red | 10 | 00000000 | 00000 |
3.5 | 63.5 to 1,300 | ASTM D2000 | Durometer 70A (Medium) | -80° to 450° | Red | 10 | 00000000 | 00000 |
4 | 63.5 to 1,300 | ASTM D2000 | Durometer 70A (Medium) | -80° to 450° | Red | 10 | 00000000 | 00000 |
4.5 | 63.5 to 1,300 | ASTM D2000 | Durometer 70A (Medium) | -80° to 450° | Red | 5 | 00000000 | 00000 |
5 | 63.5 to 1,300 | ASTM D2000 | Durometer 70A (Medium) | -80° to 450° | Red | 5 | 00000000 | 00000 |
5.5 | 63.5 to 1,300 | ASTM D2000 | Durometer 70A (Medium) | -80° to 450° | Red | 5 | 00000000 | 00000 |
5.8 | 63.5 to 1,300 | ASTM D2000 | Durometer 70A (Medium) | -80° to 450° | Red | 5 | 00000000 | 00000 |
6 | 63.5 to 1,300 | ASTM D2000 | Durometer 70A (Medium) | -80° to 450° | Red | 5 | 00000000 | 00000 |
8 | 63.5 to 1,300 | ASTM D2000 | Durometer 70A (Medium) | -80° to 450° | Red | 5 | 00000000 | 00000 |
Made-to-Order Chemical-Resistant Fluoroelastomer O-Rings

When you need a fluoroelastomer O-ring that’s not an industry standard size, we can make one to fit your requirements. Fluoroelastomer resists a wide range of chemicals, including benzene, butyl alcohol, and ethylene glycol. These O-rings have a round profile and are suitable for both static and dynamic sealing applications.
Wd. | |||||||||
---|---|---|---|---|---|---|---|---|---|
Fractional | Actual | ID Range | Hardness | Specifications Met | Temperature Range, °F | Color | Pkg. Qty. | Pkg. | |
1/16 | 0.07" | 2 1/2" to 50" | Durometer 75A (Medium) | ASTM D2000 | -15° to 400° | Black | 10 | 0000000 | 000000 |
3/32 | 0.103" | 2 1/2" to 50" | Durometer 75A (Medium) | ASTM D2000 | -15° to 400° | Black | 10 | 0000000 | 00000 |
1/8 | 0.125" | 2 1/2" to 50" | Durometer 75A (Medium) | ASTM D2000 | -15° to 400° | Black | 5 | 0000000 | 00000 |
1/8 | 0.139" | 2 1/2" to 50" | Durometer 75A (Medium) | ASTM D2000 | -15° to 400° | Black | 5 | 0000000 | 00000 |
3/16 | 0.21" | 2 1/2" to 50" | Durometer 75A (Medium) | ASTM D2000 | -15° to 400° | Black | 3 | 0000000 | 00000 |
1/4 | 0.25" | 2 1/2" to 50" | Durometer 75A (Medium) | ASTM D2000 | -15° to 400° | Black | 2 | 0000000 | 00000 |
1/4 | 0.275" | 2 1/2" to 50" | Durometer 75A (Medium) | ASTM D2000 | -15° to 400° | Black | 2 | 0000000 | 00000 |
5/16 | 0.312" | 2 1/2" to 50" | Durometer 75A (Medium) | ASTM D2000 | -15° to 400° | Black | 2 | 0000000 | 00000 |
3/8 | 0.375" | 2 1/2" to 50" | Durometer 75A (Medium) | ASTM D2000 | -15° to 400° | Black | 1 | 0000000 | 00000 |
Wd., mm | ID Range, mm | Hardness | Specifications Met | Temperature Range, °F | Color | Pkg. Qty. | Pkg. | |
1.6 | 63.5 to 1,300 | Durometer 75A (Medium) | ASTM D2000 | -15° to 400° | Black | 10 | 0000000 | 000000 |
2 | 63.5 to 1,300 | Durometer 75A (Medium) | ASTM D2000 | -15° to 400° | Black | 10 | 0000000 | 00000 |
2.5 | 63.5 to 1,300 | Durometer 75A (Medium) | ASTM D2000 | -15° to 400° | Black | 10 | 0000000 | 00000 |
3 | 63.5 to 1,300 | Durometer 75A (Medium) | ASTM D2000 | -15° to 400° | Black | 5 | 0000000 | 00000 |
3.5 | 63.5 to 1,300 | Durometer 75A (Medium) | ASTM D2000 | -15° to 400° | Black | 5 | 0000000 | 00000 |
4 | 63.5 to 1,300 | Durometer 75A (Medium) | ASTM D2000 | -15° to 400° | Black | 5 | 0000000 | 00000 |
4.5 | 63.5 to 1,300 | Durometer 75A (Medium) | ASTM D2000 | -15° to 400° | Black | 5 | 0000000 | 00000 |
5 | 63.5 to 1,300 | Durometer 75A (Medium) | ASTM D2000 | -15° to 400° | Black | 3 | 0000000 | 00000 |
5.7 | 63.5 to 1,300 | Durometer 75A (Medium) | ASTM D2000 | -15° to 400° | Black | 3 | 00000000 | 00000 |
6 | 63.5 to 1,300 | Durometer 75A (Medium) | ASTM D2000 | -15° to 400° | Black | 3 | 00000000 | 00000 |
8 | 63.5 to 1,300 | Durometer 75A (Medium) | ASTM D2000 | -15° to 400° | Black | 2 | 00000000 | 00000 |
Made-to-Order Water- and Steam-Resistant EPDM O-Rings

When you need a EPDM O-ring that’s not an industry standard size, we can make one to fit your requirements. These 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.
Wd. | |||||||||
---|---|---|---|---|---|---|---|---|---|
Fractional | Actual | ID Range | Hardness | Specifications Met | Temperature Range, °F | Color | Pkg. Qty. | Pkg. | |
1/16 | 0.07" | 2 1/2" to 50" | Durometer 70A (Medium) | ASTM D2000 | -65° to 300° | Black | 10 | 0000000 | 000000 |
3/32 | 0.103" | 2 1/2" to 50" | Durometer 70A (Medium) | ASTM D2000 | -65° to 300° | Black | 10 | 0000000 | 00000 |
1/8 | 0.125" | 2 1/2" to 50" | Durometer 70A (Medium) | ASTM D2000 | -65° to 300° | Black | 10 | 0000000 | 00000 |
1/8 | 0.139" | 2 1/2" to 50" | Durometer 70A (Medium) | ASTM D2000 | -65° to 300° | Black | 10 | 0000000 | 00000 |
3/16 | 0.21" | 2 1/2" to 50" | Durometer 70A (Medium) | ASTM D2000 | -65° to 300° | Black | 10 | 0000000 | 00000 |
1/4 | 0.25" | 2 1/2" to 50" | Durometer 70A (Medium) | ASTM D2000 | -65° to 300° | Black | 10 | 0000000 | 00000 |
1/4 | 0.275" | 2 1/2" to 50" | Durometer 70A (Medium) | ASTM D2000 | -65° to 300° | Black | 10 | 0000000 | 00000 |
5/16 | 0.312" | 2 1/2" to 50" | Durometer 70A (Medium) | ASTM D2000 | -65° to 300° | Black | 10 | 0000000 | 00000 |
3/8 | 0.375" | 2 1/2" to 50" | Durometer 70A (Medium) | ASTM D2000 | -65° to 300° | Black | 10 | 0000000 | 00000 |
Wd., mm | ID Range, mm | Hardness | Specifications Met | Temperature Range, °F | Color | Pkg. Qty. | Pkg. | |
1.5 | 63.5 to 1,300 | Durometer 70A (Medium) | ASTM D2000 | -65° to 300° | Black | 10 | 0000000 | 000000 |
2 | 63.5 to 1,300 | Durometer 70A (Medium) | ASTM D2000 | -65° to 300° | Black | 10 | 0000000 | 00000 |
2.5 | 63.5 to 1,300 | Durometer 70A (Medium) | ASTM D2000 | -65° to 300° | Black | 10 | 0000000 | 00000 |
3 | 63.5 to 1,300 | Durometer 70A (Medium) | ASTM D2000 | -65° to 300° | Black | 10 | 0000000 | 00000 |
3.5 | 63.5 to 1,300 | Durometer 70A (Medium) | ASTM D2000 | -65° to 300° | Black | 10 | 0000000 | 00000 |
4 | 63.5 to 1,300 | Durometer 70A (Medium) | ASTM D2000 | -65° to 300° | Black | 10 | 0000000 | 00000 |
4.5 | 63.5 to 1,300 | Durometer 70A (Medium) | ASTM D2000 | -65° to 300° | Black | 10 | 0000000 | 00000 |
5 | 63.5 to 1,300 | Durometer 70A (Medium) | ASTM D2000 | -65° to 300° | Black | 10 | 0000000 | 00000 |
5.5 | 63.5 to 1,300 | Durometer 70A (Medium) | ASTM D2000 | -65° to 300° | Black | 10 | 0000000 | 00000 |
5.8 | 63.5 to 1,300 | Durometer 70A (Medium) | ASTM D2000 | -65° to 300° | Black | 10 | 00000000 | 00000 |
6 | 63.5 to 1,300 | Durometer 70A (Medium) | ASTM D2000 | -65° to 300° | Black | 10 | 00000000 | 00000 |
8 | 63.5 to 1,300 | Durometer 70A (Medium) | ASTM D2000 | -65° to 300° | Black | 10 | 00000000 | 00000 |