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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 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.
Fractional | Actual | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Dash Number | ID | OD | ID | OD | Hardness | Specifications Met | Temperature Range, °F | Color | Pkg. Qty. | Pkg. | |
Wd.: 3/32 Fractional (0.103" Actual) | |||||||||||
| 104 | 1/8 | 5/16 | 0.112" | 0.318" | 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.: 3/32 Fractional (0.103" Actual) | |||||||||||
| 104 | 1/8 | 5/16 | 0.112" | 0.318" | Durometer 90A (Hard) | ASTM D2000, SAE AS568, SAE J200 | -30° to 250° | Black | 100 | 00000000 | 00000 |
X-Profile Oil-Resistant Buna-N O-Rings
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 | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Dash Number | ID | OD | ID | OD | Hardness | Specifications Met | Temperature Range, °F | Color | Pkg. Qty. | Pkg. | |
Wd.: 3/32 Fractional (0.103" Actual) | |||||||||||
| 104 | 1/8 | 5/16 | 0.112" | 0.318" | Durometer 70A (Medium) | ASTM D2000, SAE AS568, SAE J200 | -30° to 225° | Black | 100 | 000000000 | 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.: 3/32 Fractional (0.103" Actual) | |||||||||||
| 104 | 1/8 | 5/16 | 0.112" | 0.318" | Durometer 65A (Medium) | ASTM D2000, MIL-I-45208, SAE AS3578, SAE AS568, SAE J200 | -20° to 250° | Black | 25 | 00000000 | 000000 |
| 104 | 1/8 | 5/16 | 0.112" | 0.318" | Durometer 65A (Medium) | ASTM D2000, MIL-P-5315, SAE AS568, SAE J200 | -65° to 155° | 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.: 3/32 Fractional (0.103"Actual) | |||||||||||
| 104 | 1/8 | 5/16 | 0.112" | 0.318" | 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
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 | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Dash Number | ID | OD | ID | OD | Hardness | Temperature Range, °F | Color | Pkg. Qty. | Pkg. | |
Wd.: 3/32 Fractional (0.103" Actual) | ||||||||||
| 104 | 1/8 | 5/16 | 0.112" | 0.318" | Durometer 90A (Hard) | -65° to 275° | Cream | 5 | 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.: 3/32 Fractional (0.103" Actual) | |||||||||||
| 104 | 1/8 | 5/16 | 0.112" | 0.318" | Durometer 75A (Medium) | ASTM D2000, SAE AS568, SAE J200 | 0° to 400° | Black | 50 | 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.: 3/32 Fractional (0.103" Actual) | |||||||||||
| 104 | 1/8 | 5/16 | 0.112" | 0.318" | Durometer 90A (Hard) | ASTM D2000, SAE AS568, SAE J200 | -20° to 400° | Black | 10 | 00000000 | 00000 |
X-Profile Chemical-Resistant Viton® Fluoroelastomer O-Rings
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. Made of Viton® fluoroelastomer, these O-rings 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.: 3/32 Fractional (0.103" Actual) | |||||||||||
| 104 | 1/8 | 5/16 | 0.112" | 0.318" | Durometer 75A (Medium) | ASTM D2000, SAE AS568, SAE J200 | -15° to 400° | Black | 25 | 00000000 | 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 have shelf life, cure date, and traceable lot number printed on the bag.
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.: 3/32 Fractional (0.103" Actual) | |||||||||||
| 104 | 1/8 | 5/16 | 0.112" | 0.318" | Durometer 75A (Medium) | ASTM D2000, SAE AS568, SAE J200 | -15° to 400° | Black | 5 | 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. 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.
Fractional | Actual | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Dash Number | ID | OD | ID | OD | Hardness | Specifications Met | Temperature Range, °F | Color | Pkg. Qty. | Pkg. | |
Wd.: 3/32 Fractional (0.103" Actual) | |||||||||||
| 104 | 1/8 | 5/16 | 0.112" | 0.318" | Durometer 75A (Medium) | ASTM D2000, SAE AS568, SAE J200 | -15° to 400° | Brown | 50 | 0000000 | 000000 |
Chemical-Resistant Clean Room Viton® Fluoroelastomer O-Rings
Made and bagged in an ISO Class 7 and Fed. Spec. Class 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.: 3/32 Fractional (0.103" Actual) | ||||||||||||
| 104 | 1/8 | 5/16 | 0.112" | 0.318" | Durometer 70A (Medium) | Fed. Std. Class 10,000; ISO Class 7 | 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.: 3/32 Fractional (0.103" Actual) | ||||||||||
| 104 | 1/8 | 5/16 | 0.112" | 0.318" | 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.: 3/32 Fractional (0.103" Actual) | |||||||||||
| 104 | 3/32 | 1/8 | 5/16 | 0.112" | 0.318" | 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 |
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 and dynamic 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.
Fractional | Actual | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Dash Number | ID | OD | ID | OD | Hardness | Specifications Met | Temperature Range, °F | Color | Pkg. Qty. | Pkg. | |
Wd.: 3/32 Fractional (0.103" Actual) | |||||||||||
| 104 | 1/8 | 5/16 | 0.112" | 0.318" | Durometer 70A (Medium) | ASTM D2000, FDA Compliant 21 CFR 177.2600, SAE AS568, SAE J200, USP VI Certified | -60° to 400° | Red | 50 | 00000000 | 000000 |
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.: 3/32 Fractional (0.103" Actual) | |||||||||||
| 104 | 1/8 | 5/16 | 0.112" | 0.318" | Durometer 50A (Soft) | ASTM D2000, SAE AS568 | -60° to 400° | Red | 10 | 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.: 3/32 Fractional (0.103" Actual) | |||||||||||
| 104 | 1/8 | 5/16 | 0.112" | 0.318" | Durometer 70A (Medium) | ASTM D2000, SAE AS568, SAE J200 | -70° to 250° | Black | 100 | 00000000 | 000000 |
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 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.
Fractional | Actual | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Dash Number | ID | OD | ID | OD | Hardness | Specifications Met | Temperature Range, °F | Color | Pkg. Qty. | Pkg. | |
Wd.: 3/32 Fractional (0.103" Actual) | |||||||||||
| 104 | 1/8 | 5/16 | 0.112" | 0.318" | 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.: 3/32 Fractional (0.103" Actual) | |||||||||||
| 104 | 1/8 | 5/16 | 0.112" | 0.318" | Durometer 70A (Medium) | ASTM D2000, SAE AS568, SAE J200 | -10° to 170° | Black | 100 | 000000000 | 000000 |