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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 (0.05" Actual) | |||||||||||
| 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 | 000000 |
Wd.: 1/16 Fractional (0.07" Actual) | |||||||||||
| 004 | 5/64 | 13/64 | 0.07" | 0.21" | Durometer 70A (Medium) | ASTM D2000, MIL-P-25732, SAE AS568, SAE J200 | -65° to 275° | Black | 50 | 00000000 | 00000 |
| 005 | 3/32 | 7/32 | 0.101" | 0.241" | Durometer 70A (Medium) | ASTM D2000, MIL-P-25732, SAE AS568, SAE J200 | -65° to 275° | Black | 50 | 00000000 | 00000 |
| 006 | 1/8 | 1/4 | 0.114" | 0.254" | Durometer 70A (Medium) | ASTM D2000, MIL-P-25732, SAE AS568, SAE J200 | -65° to 275° | Black | 50 | 00000000 | 00000 |
| 007 | 5/32 | 9/32 | 0.145" | 0.285" | Durometer 70A (Medium) | ASTM D2000, MIL-P-25732, SAE AS568, SAE J200 | -65° to 275° | Black | 50 | 00000000 | 00000 |
| 008 | 3/16 | 5/16 | 0.176" | 0.316" | Durometer 70A (Medium) | ASTM D2000, MIL-P-25732, SAE AS568, SAE J200 | -65° to 275° | Black | 50 | 00000000 | 00000 |
| 009 | 7/32 | 11/32 | 0.208" | 0.348" | Durometer 70A (Medium) | ASTM D2000, MIL-P-25732, SAE AS568, SAE J200 | -65° to 275° | Black | 50 | 00000000 | 00000 |
| 010 | 1/4 | 3/8 | 0.239" | 0.379" | Durometer 70A (Medium) | ASTM D2000, MIL-P-25732, SAE AS568, SAE J200 | -65° to 275° | Black | 50 | 00000000 | 00000 |
| 011 | 5/16 | 7/16 | 0.301" | 0.441" | Durometer 70A (Medium) | ASTM D2000, MIL-P-25732, SAE AS568, SAE J200 | -65° to 275° | Black | 50 | 00000000 | 00000 |
| 012 | 3/8 | 1/2 | 0.364" | 0.504" | Durometer 70A (Medium) | ASTM D2000, MIL-P-25732, SAE AS568, SAE J200 | -65° to 275° | Black | 50 | 00000000 | 00000 |
| 013 | 7/16 | 9/16 | 0.426" | 0.566" | Durometer 70A (Medium) | ASTM D2000, MIL-P-25732, SAE AS568, SAE J200 | -65° to 275° | Black | 50 | 00000000 | 00000 |
| 014 | 1/2 | 5/8 | 0.489" | 0.629" | Durometer 70A (Medium) | ASTM D2000, MIL-P-25732, SAE AS568, SAE J200 | -65° to 275° | Black | 50 | 00000000 | 00000 |
| 015 | 9/16 | 11/16 | 0.551" | 0.691" | Durometer 70A (Medium) | ASTM D2000, MIL-P-25732, SAE AS568, SAE J200 | -65° to 275° | Black | 50 | 00000000 | 00000 |
| 016 | 5/8 | 3/4 | 0.614" | 0.754" | Durometer 70A (Medium) | ASTM D2000, MIL-P-25732, SAE AS568, SAE J200 | -65° to 275° | Black | 50 | 00000000 | 00000 |
| 017 | 11/16 | 13/16 | 0.676" | 0.816" | Durometer 70A (Medium) | ASTM D2000, MIL-P-25732, SAE AS568, SAE J200 | -65° to 275° | Black | 50 | 00000000 | 00000 |
| 018 | 3/4 | 7/8 | 0.739" | 0.879" | Durometer 70A (Medium) | ASTM D2000, MIL-P-25732, SAE AS568, SAE J200 | -65° to 275° | Black | 50 | 00000000 | 00000 |
| 019 | 13/16 | 15/16 | 0.801" | 0.941" | Durometer 70A (Medium) | ASTM D2000, MIL-P-25732, SAE AS568, SAE J200 | -65° to 275° | Black | 50 | 00000000 | 00000 |
| 021 | 15/16 | 1 1/16 | 0.926" | 1.066" | Durometer 70A (Medium) | ASTM D2000, MIL-P-25732, SAE AS568, SAE J200 | -65° to 275° | Black | 50 | 00000000 | 00000 |
| 022 | 1 | 1 1/8 | 0.989" | 1.129" | Durometer 70A (Medium) | ASTM D2000, MIL-P-25732, SAE AS568, SAE J200 | -65° to 275° | Black | 50 | 00000000 | 00000 |
| 029 | 1 1/2 | 1 5/8 | 1.489" | 1.629" | Durometer 70A (Medium) | ASTM D2000, MIL-P-25732, SAE AS568, SAE J200 | -65° to 275° | Black | 25 | 00000000 | 00000 |
| 037 | 2 1/2 | 2 5/8 | 2.489" | 2.629" | Durometer 70A (Medium) | ASTM D2000, MIL-P-25732, SAE AS568, SAE J200 | -65° to 275° | Black | 10 | 00000000 | 00000 |
| 041 | 3 | 3 1/8 | 2.989" | 3.129" | Durometer 70A (Medium) | ASTM D2000, MIL-P-25732, SAE AS568, SAE J200 | -65° to 275° | Black | 10 | 00000000 | 00000 |
| 042 | 3 1/4 | 3 3/8 | 3.239" | 3.379" | Durometer 70A (Medium) | ASTM D2000, MIL-P-25732, SAE AS568, SAE J200 | -65° to 275° | Black | 10 | 00000000 | 00000 |
| 043 | 3 1/2 | 3 5/8 | 3.489" | 3.629" | Durometer 70A (Medium) | ASTM D2000, MIL-P-25732, SAE AS568, SAE J200 | -65° to 275° | Black | 10 | 00000000 | 00000 |
| 044 | 3 3/4 | 3 7/8 | 3.739" | 3.879" | Durometer 70A (Medium) | ASTM D2000, MIL-P-25732, SAE AS568, SAE J200 | -65° to 275° | Black | 10 | 00000000 | 00000 |
Wd.: 3/32 Fractional (0.103" Actual) | |||||||||||
| 110 | 3/8 | 9/16 | 0.362" | 0.568" | Durometer 70A (Medium) | ASTM D2000, MIL-P-25732, SAE AS568, SAE J200 | -65° to 275° | Black | 50 | 00000000 | 00000 |
| 111 | 7/16 | 5/8 | 0.424" | 0.63" | Durometer 70A (Medium) | ASTM D2000, MIL-P-25732, SAE AS568, SAE J200 | -65° to 275° | Black | 50 | 00000000 | 00000 |
| 112 | 1/2 | 11/16 | 0.487" | 0.693" | Durometer 70A (Medium) | ASTM D2000, MIL-P-25732, SAE AS568, SAE J200 | -65° to 275° | Black | 50 | 00000000 | 00000 |
| 116 | 3/4 | 15/16 | 0.737" | 0.943" | Durometer 70A (Medium) | ASTM D2000, MIL-P-25732, SAE AS568, SAE J200 | -65° to 275° | Black | 50 | 00000000 | 00000 |
| 117 | 13/16 | 1 | 0.799" | 1.005" | Durometer 70A (Medium) | ASTM D2000, MIL-P-25732, SAE AS568, SAE J200 | -65° to 275° | Black | 50 | 00000000 | 00000 |
| 118 | 7/8 | 1 1/16 | 0.862" | 1.068" | Durometer 70A (Medium) | ASTM D2000, MIL-P-25732, SAE AS568, SAE J200 | -65° to 275° | Black | 50 | 00000000 | 00000 |
| 152 | 3 1/4 | 3 7/16 | 3.237" | 3.443" | Durometer 70A (Medium) | ASTM D2000, MIL-P-25732, SAE AS568, SAE J200 | -65° to 275° | Black | 10 | 00000000 | 00000 |
| 153 | 3 1/2 | 3 11/16 | 3.487" | 3.693" | Durometer 70A (Medium) | ASTM D2000, MIL-P-25732, SAE AS568, SAE J200 | -65° to 275° | Black | 10 | 00000000 | 00000 |
Wd.: 1/8 Fractional (0.139" Actual) | |||||||||||
| 210 | 3/4 | 1 | 0.734" | 1.012" | Durometer 70A (Medium) | ASTM D2000, MIL-P-25732, SAE AS568, SAE J200 | -65° to 275° | Black | 25 | 00000000 | 00000 |
| 214 | 1 | 1 1/4 | 0.984" | 1.262" | Durometer 70A (Medium) | ASTM D2000, MIL-P-25732, SAE AS568, SAE J200 | -65° to 275° | Black | 25 | 00000000 | 00000 |
| 216 | 1 1/8 | 1 3/8 | 1.109" | 1.387" | Durometer 70A (Medium) | ASTM D2000, MIL-P-25732, SAE AS568, SAE J200 | -65° to 275° | Black | 25 | 00000000 | 00000 |
| 218 | 1 1/4 | 1 1/2 | 1.234" | 1.512" | Durometer 70A (Medium) | ASTM D2000, MIL-P-25732, SAE AS568, SAE J200 | -65° to 275° | Black | 25 | 00000000 | 00000 |
| 219 | 1 5/16 | 1 9/16 | 1.296" | 1.574" | Durometer 70A (Medium) | ASTM D2000, MIL-P-25732, SAE AS568, SAE J200 | -65° to 275° | Black | 25 | 00000000 | 00000 |
| 220 | 1 3/8 | 1 5/8 | 1.359" | 1.637" | Durometer 70A (Medium) | ASTM D2000, MIL-P-25732, SAE AS568, SAE J200 | -65° to 275° | Black | 25 | 00000000 | 00000 |
| 222 | 1 1/2 | 1 3/4 | 1.484" | 1.762" | Durometer 70A (Medium) | ASTM D2000, MIL-P-25732, SAE AS568, SAE J200 | -65° to 275° | Black | 10 | 00000000 | 00000 |
| 235 | 3 1/8 | 3 3/8 | 3.109" | 3.387" | Durometer 70A (Medium) | ASTM D2000, MIL-P-25732, SAE AS568, SAE J200 | -65° to 275° | Black | 10 | 00000000 | 00000 |
| 237 | 3 3/8 | 3 5/8 | 3.359" | 3.637" | Durometer 70A (Medium) | ASTM D2000, MIL-P-25732, SAE AS568, SAE J200 | -65° to 275° | Black | 10 | 00000000 | 00000 |
| 239 | 3 5/8 | 3 7/8 | 3.609" | 3.887" | Durometer 70A (Medium) | ASTM D2000, MIL-P-25732, SAE AS568, SAE J200 | -65° to 275° | Black | 10 | 00000000 | 00000 |
| 241 | 3 7/8 | 4 1/8 | 3.859" | 4.137" | Durometer 70A (Medium) | ASTM D2000, MIL-P-25732, SAE AS568, SAE J200 | -65° to 275° | Black | 10 | 00000000 | 00000 |
| 252 | 5 1/4 | 5 1/2 | 5.234" | 5.512" | Durometer 70A (Medium) | ASTM D2000, MIL-P-25732, SAE AS568, SAE J200 | -65° to 275° | Black | 5 | 00000000 | 00000 |
Wd.: 3/16 Fractional (0.21" Actual) | |||||||||||
| 328 | 1 7/8 | 2 1/4 | 1.85" | 2.27" | Durometer 70A (Medium) | ASTM D2000, MIL-P-25732, SAE AS568, SAE J200 | -65° to 275° | Black | 10 | 00000000 | 00000 |