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About O-Rings
More
Oil-Resistant Buna-N O-Rings
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 come with a material certificate that includes shelf life, cure date, and a traceable lot number. 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.
Fractional | Actual | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Dash Number | ID | OD | ID | OD | Hardness | Specifications Met | Temperature Range, °F | Color | Pkg. Qty. | Pkg. | |
Wd.: 3/64 Fractional (0.050" Actual) | |||||||||||
| 002 | 3/64 | 9/64 | 0.042" | 0.142" | Durometer 70A (Medium) | ASTM D2000, SAE AS568, SAE J200 | -20° to 250° | Black | 100 | 00000000 | 00000 |
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.
Fractional | Actual | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Dash Number | ID | OD | ID | OD | Hardness | Specifications Met | Temperature Range, °F | Color | Pkg. Qty. | Pkg. | |
Wd.: 3/64 Fractional (0.050" Actual) | |||||||||||
| 002 | 3/64 | 9/64 | 0.042" | 0.142" | Durometer 90A (Hard) | ASTM D2000, SAE AS568, SAE J200 | -20° to 250° | Black | 100 | 00000000 | 00000 |
Oil-Resistant Mil. Spec. Buna-N O-Rings
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 | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Dash Number | ID | OD | ID | OD | Hardness | Specifications Met | Temp. Range, °F | Color | Pkg. Qty. | Pkg. | |
Wd.: 3/64 Fractional (0.050" Actual) | |||||||||||
| 002 | 3/64 | 9/64 | 0.042" | 0.142" | Durometer 65A (Medium) | ASTM D2000, MIL-I-45208, SAE AS3578, SAE AS568, SAE J200 | -20° to 250° | Black | 25 | 00000000 | 000000 |
| 002 | 3/64 | 9/64 | 0.042" | 0.142" | Durometer 65A (Medium) | ASTM D2000, MIL-P-5315, SAE AS568, SAE J200 | -65° to 155° | Black | 50 | 00000000 | 00000 |
| 002 | 3/64 | 9/64 | 0.042" | 0.142" | Durometer 70A (Medium) | ASTM D2000, MIL-P-25732, SAE AS568, SAE J200 | -65° to 275° | Black | 50 | 00000000 | 00000 |
Oil- and Abrasion-Resistant Polyurethane O-Rings
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 | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Dash Number | ID | OD | ID | OD | Hardness | Specifications Met | Temperature Range, °F | Color | Pkg. Qty. | Pkg. | |
Wd.: 3/64 Fractional (0.050"Actual) | |||||||||||
| 002 | 3/64 | 9/64 | 0.042" | 0.142" | Durometer 70A (Medium) | ASTM D2000, SAE AS568, SAE J200 | -40° to 200° | Black | 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.
Fractional | Actual | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Dash Number | ID | OD | ID | OD | Hardness | Specifications Met | Temperature Range, °F | Color | Pkg. Qty. | Pkg. | |
Wd.: 3/64 Fractional (0.050" Actual) | |||||||||||
| 002 | 3/64 | 9/64 | 0.042" | 0.142" | Durometer 75A (Medium) | ASTM D2000, SAE AS568, SAE J200 | 0° to 400° | Black | 100 | 00000000 | 00000 |
Chemical-Resistant Soft Viton® Fluoroelastomer O-Rings
Softer than standard Viton® fluoroelastomer O-rings, these offer a better seal in low-pressure applications. They resist 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. All are sized to the SAE standard AS568. They include material certification with shelf life, cure date, and traceable lot number.
For technical drawings and 3-D models, click on a part number.
Fractional | Actual | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Dash Number | ID | OD | ID | OD | Hardness | Temperature Range, °F | Color | Specifications Met | Pkg. Qty. | Pkg. | |
Wd.: 3/64 Fractional (0.050" Actual) | |||||||||||
| 002 | 3/64 | 9/64 | 0.042" | 0.142" | Durometer 60A (Soft) | -15° to 400° | White | FDA Compliant 21 CFR 177.2600, SAE AS568 | 25 | 00000000 | 00000 |
Chemical-Resistant Hard Viton® Fluoroelastomer O-Rings
These hard O-rings offer better wear resistance than standard Viton® fluoroelastomer O-rings. 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. These O-rings are sized to the SAE standard AS568.
For technical drawings and 3-D models, click on a part number.
Fractional | Actual | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Dash Number | ID | OD | ID | OD | Hardness | Specifications Met | Temperature Range, °F | Color | Pkg. Qty. | Pkg. | |
Wd.: 3/64 Fractional (0.050" Actual) | |||||||||||
| 002 | 3/64 | 9/64 | 0.042" | 0.142" | Durometer 90A (Hard) | ASTM D2000, SAE AS568, SAE J200 | -20° to 400° | Black | 50 | 00000000 | 000000 |
Square-Profile Chemical-Resistant
Viton® Fluoroelastomer O-Rings
With flat edges on all four sides, these Viton® fluoroelastomer square-profile O-rings cover more surface than round-profile O-rings for a better seal in static applications, such as hose, pipe, and faucet connections. They resist a wide range of chemicals, including benzene, butyl alcohol, and ethylene glycol. All are sized to the SAE standard AS568.
For technical drawings and 3-D models, click on a part number.
Fractional | Actual | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Dash Number | ID | OD | ID | OD | Hardness | Specifications Met | Temperature Range, °F | Color | Pkg. Qty. | Pkg. | |
Wd.: 3/64 Fractional (0.050" Actual) | |||||||||||
| 002 | 3/64 | 9/64 | 0.042" | 0.142" | Durometer 75A (Medium) | ASTM D2000, SAE AS568 | -10° to 400° | Black | 25 | 0000000 | 000000 |
Chemical-Resistant Super-Resilient
Viton® Fluoroelastomer O-Rings
These durable Viton® fluoroelastomer O-rings bounce back to shape after repeated compression better than other types of Viton® fluoroelastomer O-rings. They resist 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. They include material certification with shelf life, cure date, and traceable lot number. Inch O-rings are sized to the SAE standard AS568.
For technical drawings and 3-D models, click on a part number.
Fractional | Actual | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Dash Number | ID | OD | ID | OD | Hardness | Specifications Met | Temperature Range, °F | Color | Pkg. Qty. | Pkg. | |
Wd.: 3/64 Fractional (0.05" Actual) | |||||||||||
| 002 | 3/64 | 9/64 | 0.042" | 0.142" | Durometer 75A (Medium) | ASTM D2000, SAE AS568, SAE J200 | -15° to 400° | Black | 25 | 00000000 | 00000 |
Chemical-Resistant Brown
Viton® Fluoroelastomer O-Rings
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. These O-rings include material certification with shelf life, cure date, and traceable lot number.
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.
Fractional | Actual | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Dash Number | ID | OD | ID | OD | Hardness | Specifications Met | Temperature Range, °F | Color | Pkg. Qty. | Pkg. | |
Wd.: 3/64 Fractional (0.050" Actual) | |||||||||||
| 002 | 3/64 | 9/64 | 0.042" | 0.142" | Durometer 75A (Medium) | ASTM D2000, SAE AS568, SAE J200 | -10° to 400° | Brown | 100 | 0000000 | 00000 |
Chemical-Resistant Mil. Spec.
Viton® Fluoroelastomer O-Rings
Made of Viton® fluoroelastomer, these O-rings meet MIL-R-83248C. They resist chemicals such as benzene, butyl alcohol, and ethylene glycol. 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 | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Dash Number | ID | OD | ID | OD | Hardness | Specifications Met | Temperature Range, °F | Color | Pkg. Qty. | Pkg. | |
Wd.: 3/64 Fractional (0.050" Actual) | |||||||||||
| 002 | 3/64 | 9/64 | 0.042" | 0.142" | Durometer 75A (Medium) | ASTM D2000, MIL-R-83248C, SAE AS568, SAE J200 | 0° to 400° | Black | 50 | 0000000 | 000000 |
Chemical-Resistant Clean Room
Viton® Fluoroelastomer O-Rings
Made and bagged in an ISO Class 7 (10,000) clean room. These O-rings are made of Viton® fluoroelastomer, which resists chemicals such as benzene, butyl alcohol, 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 | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Dash Number | ID | OD | ID | OD | Hardness | Environmental Rating | Specifications Met | Temperature Range, °F | Color | Pkg. Qty. | Pkg. | |
Wd.: 3/64 Fractional (0.05" Actual) | ||||||||||||
| 002 | 3/64 | 9/64 | 0.042" | 0.142" | Durometer 75A (Medium) | Class 10,000 (Fed. Std.); Class 7 (ISO) | ASTM D2000, FDA Compliant 21 CFR 177.2600, SAE AS568, SAE J200, USP VI Certified | -15° to 400° | Black | 25 | 00000000 | 000000 |
Ultra-Chemical-Resistant Kalrez 4079 O-Rings
Inherently softer and more compressible than PTFE O-rings, these Kalrez 4079 O-rings have comparable chemical resistance. Use them with acetone, methyl ethyl ketone (MEK), potassium hydroxide, and most acids. 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.
Fractional | Actual | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Dash Number | ID | OD | ID | OD | Hardness | Specifications Met | Temperature Range, °F | Color | Each | |
Wd.: 3/64 Fractional (0.050" Actual) | ||||||||||
| 002 | 3/64 | 9/64 | 0.042" | 0.142" | Durometer 75A (Medium) | ASTM D2000, SAE AS568, SAE J200 | 30° to 600° | Black | 00000000 | 000000 |
Ultra-Chemical-Resistant High-Purity Kalrez 6230 O-Rings
Made of Kalrez 6230, these O-rings are for use when high purity is essential, such as with food and semiconductors. They're made of FDA-listed material for use with food and beverage, plus they are 3-A and USP VI certified; not for use in medical applications. These O-rings resist ammonia, glycerin, sodium bicarbonate, solvents, synthetic lubricants, and most acids. 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 | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Dash Number | Wd. | ID | OD | ID | OD | Hardness | Specifications Met | Temperature Range, °F | Color | Each | |
Wd.: 3/64 Fractional (0.050" Actual) | |||||||||||
| 002 | 3/64 | 3/64 | 9/64 | 0.042" | 0.142" | Durometer 75A (Medium) | 3-A Certified 18-03, FDA Compliant 21 CFR 177.2600, SAE AS568, USP VI Certified | 30° to 500° | Black | 0000000 | 000000 |
Chemical-Resistant Low-Temperature
Fluorosilicone O-Rings
These fluorosilicone O-rings remain flexible at temperatures as low as -80° F. They resist ethanol, ethylene glycol, and isopropyl alcohol. 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 | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Dash Number | ID | OD | ID | OD | Hardness | Specifications Met | Temperature Range, °F | Color | Pkg. Qty. | Pkg. | |
Wd.: 3/64 Fractional (0.050" Actual) | |||||||||||
| 002 | 3/64 | 9/64 | 0.042" | 0.142" | Durometer 70A (Medium) | ASTM D2000, MIL-R-25988, SAE AS568, SAE J200 | -80° to 400° | Blue | 5 | 00000000 | 00000 |
High-Temperature Silicone O-Rings
These silicone 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. All include material certification with shelf life, cure date, and traceable lot number.
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.
Fractional | Actual | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Dash Number | ID | OD | ID | OD | Hardness | Specifications Met | Temperature Range, °F | Color | Pkg. Qty. | Pkg. | |
Wd.: 3/64 Fractional (0.050" Actual) | |||||||||||
| 002 | 3/64 | 9/64 | 0.042" | 0.142" | Durometer 70A (Medium) | FDA Compliant 21 CFR 177.2600, SAE AS568, SAE J200 | -80° to 450° | Red | 25 | 0000000 | 00000 |
High-Temperature Soft Silicone O-Rings
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 | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Dash Number | ID | OD | ID | OD | Hardness | Specifications Met | Temperature Range, °F | Color | Pkg. Qty. | Pkg. | |
Wd.: 3/64 Fractional (0.050" Actual) | |||||||||||
| 002 | 3/64 | 9/64 | 0.042" | 0.142" | Durometer 50A (Soft) | ASTM D2000, SAE AS568 | -60° to 400° | Red | 25 | 00000000 | 00000 |
Square-Profile High-Temperature Silicone O-Rings
Made of silicone, these square-profile O-rings withstand temperatures up to 400° F. They have flat edges on all four sides, so they cover more surface than round-profile O-rings for a better seal in static applications, such as hose, pipe, and faucet connections. All are sized to the SAE standard AS568.
For technical drawings and 3-D models, click on a part number.
Fractional | Actual | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Dash Number | ID | OD | ID | OD | Hardness | Specifications Met | Temperature Range, °F | Color | Pkg. Qty. | Pkg. | |
Wd.: 3/64 Fractional (0.050" Actual) | |||||||||||
| 002 | 3/64 | 9/64 | 0.042" | 0.142" | Durometer 70A (Medium) | ASTM D2000, SAE AS568 | -60° to 400° | Red | 25 | 00000000 | 000000 |
High-Temperature High-Purity Silicone O-Rings
Even in temperature up to 400° F, these silicone O-rings will bounce back after compression. 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 | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Dash Number | ID | OD | ID | OD | Hardness | Specifications Met | Temperature Range, °F | Color | Pkg. Qty. | Pkg. | |
Wd.: 3/64 Fractional (0.050" Actual) | |||||||||||
| 002 | 3/64 | 9/64 | 0.042" | 0.142" | Durometer 70A (Medium) | ASTM D2000, SAE AS568, SAE J200, USP VI Certified | -60° to 400° | Red | 25 | 00000000 | 00000 |
Water- and Steam-Resistant EPDM O-Rings
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 | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Dash Number | ID | OD | ID | OD | Hardness | Specifications Met | Temperature Range, °F | Color | Pkg. Qty. | Pkg. | |
Wd.: 3/64 Fractional (0.050" Actual) | |||||||||||
| 002 | 3/64 | 9/64 | 0.042" | 0.142" | Durometer 70A (Medium) | ASTM D2000, SAE AS568, SAE J200 | -70° to 250° | Black | 25 | 00000000 | 00000 |
Water- and Steam-Resistant
High-Temperature EPDM O-Rings
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 include material certification with shelf life, cure, date, and traceable lot number.
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.
Fractional | Actual | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Dash Number | ID | OD | ID | OD | Hardness | Specifications Met | Temperature Range, °F | Color | Pkg. Qty. | Pkg. | |
Wd.: 3/64 Fractional (0.050" Actual) | |||||||||||
| 002 | 3/64 | 9/64 | 0.042" | 0.142" | Durometer 70A (Medium) | ASTM D2000 | -70° to 300° | Black | 100 | 00000000 | 00000 |
Water-Resistant Neoprene O-Rings
In addition to water, these neoprene O-rings resist ammonia, ethylene glycol, and isopropyl alcohol. 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 | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Dash Number | ID | OD | ID | OD | Hardness | Specifications Met | Temperature Range, °F | Color | Pkg. Qty. | Pkg. | |
Wd.: 3/64 Fractional (0.050" Actual) | |||||||||||
| 002 | 3/64 | 9/64 | 0.042" | 0.142" | Durometer 70A (Medium) | ASTM D2000, SAE AS568, SAE J200 | -10° to 170° | Black | 75 | 000000000 | 000000 |