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About O-Rings
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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 stand up to a variety of oils and fuels as well as ammonia, ethylene glycol, and isopropyl alcohol. They’re also resilient and tear resistant. These O-rings are made in the U.S.
O-rings that meet MIL-P-83461 have been tested in conditions that simulate long-term, compressed use at high heat. Choose them when you need O-rings that will stand up to extended direct contact with high-temperature hydraulic oil.
Fractional | Actual | Pkg. | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Dash Number  | ID | OD | ID | OD | Hardness | Specifications Met | Temp. Range, °F | Color | Pkg. Qty. | 1-9 | 10-Up | |
Wd.: 1/16 Fractional (0.06" Actual) | ||||||||||||
| 003 | 1/16 | 3/16 | 0.056" | 0.176" | Durometer 70A (Medium) | ASTM D2000, MIL-P-83461, SAE AS568, SAE J200 | -65° to 275° | Black | 50 | 00000000 | 000000 | 000000 |
Wd.: 1/16 Fractional (0.07" Actual) | ||||||||||||
| 005 | 3/32 | 7/32 | 0.101" | 0.241" | Durometer 70A (Medium) | ASTM D2000, MIL-P-83461, SAE AS568, SAE J200 | -65° to 275° | Black | 50 | 00000000 | 00000 | 00000 |
| 011 | 5/16 | 7/16 | 0.301" | 0.441" | Durometer 70A (Medium) | ASTM D2000, MIL-P-83461, SAE AS568, SAE J200 | -65° to 275° | Black | 50 | 00000000 | 00000 | 00000 |
| 012 | 3/8 | 1/2 | 0.364" | 0.504" | Durometer 70A (Medium) | ASTM D2000, MIL-P-83461, SAE AS568, SAE J200 | -65° to 275° | Black | 50 | 00000000 | 00000 | 00000 |
| 014 | 1/2 | 5/8 | 0.489" | 0.629" | Durometer 70A (Medium) | ASTM D2000, MIL-P-83461, SAE AS568, SAE J200 | -65° to 275° | Black | 50 | 00000000 | 00000 | 00000 |
| 015 | 9/16 | 11/16 | 0.551" | 0.691" | Durometer 70A (Medium) | ASTM D2000, MIL-P-83461, SAE AS568, SAE J200 | -65° to 275° | Black | 50 | 00000000 | 00000 | 00000 |
| 016 | 5/8 | 3/4 | 0.614" | 0.754" | Durometer 70A (Medium) | ASTM D2000, MIL-P-83461, SAE AS568, SAE J200 | -65° to 275° | Black | 50 | 00000000 | 00000 | 00000 |
| 017 | 11/16 | 13/16 | 0.676" | 0.816" | Durometer 70A (Medium) | ASTM D2000, MIL-P-83461, SAE AS568, SAE J200 | -65° to 275° | Black | 50 | 00000000 | 00000 | 00000 |
| 018 | 3/4 | 7/8 | 0.739" | 0.879" | Durometer 70A (Medium) | ASTM D2000, MIL-P-83461, SAE AS568, SAE J200 | -65° to 275° | Black | 50 | 00000000 | 00000 | 00000 |
| 019 | 13/16 | 15/16 | 0.801" | 0.941" | Durometer 70A (Medium) | ASTM D2000, MIL-P-83461, SAE AS568, SAE J200 | -65° to 275° | Black | 50 | 00000000 | 00000 | 00000 |
| 020 | 7/8 | 1 | 0.864" | 1.004" | Durometer 70A (Medium) | ASTM D2000, MIL-P-83461, SAE AS568, SAE J200 | -65° to 275° | Black | 50 | 0000000 | 00000 | 00000 |
| 021 | 15/16 | 1 1/16 | 0.926" | 1.066" | Durometer 70A (Medium) | ASTM D2000, MIL-P-83461, SAE AS568, SAE J200 | -65° to 275° | Black | 50 | 00000000 | 00000 | 00000 |
| 022 | 1 | 1 1/8 | 0.989" | 1.129" | Durometer 70A (Medium) | ASTM D2000, MIL-P-83461, SAE AS568, SAE J200 | -65° to 275° | Black | 50 | 00000000 | 00000 | 00000 |
| 029 | 1 1/2 | 1 5/8 | 1.489" | 1.629" | Durometer 70A (Medium) | ASTM D2000, MIL-P-83461, SAE AS568, SAE J200 | -65° to 275° | Black | 25 | 00000000 | 00000 | 00000 |
| 030 | 1 5/8 | 1 3/4 | 1.614" | 1.754" | Durometer 70A (Medium) | ASTM D2000, MIL-P-83461, SAE AS568, SAE J200 | -65° to 275° | Black | 25 | 0000000 | 00000 | 00000 |
| 035 | 2 1/4 | 2 3/8 | 2.239" | 2.379" | Durometer 70A (Medium) | ASTM D2000, MIL-P-83461, SAE AS568, SAE J200 | -65° to 275° | Black | 10 | 00000000 | 00000 | 00000 |
| 036 | 2 3/8 | 2 1/2 | 2.364" | 2.504" | Durometer 70A (Medium) | ASTM D2000, MIL-P-83461, SAE AS568, SAE J200 | -65° to 275° | Black | 10 | 00000000 | 00000 | 00000 |
| 038 | 2 5/8 | 2 3/4 | 2.614" | 2.754" | Durometer 70A (Medium) | ASTM D2000, MIL-P-83461, SAE AS568, SAE J200 | -65° to 275° | Black | 10 | 00000000 | 00000 | 00000 |
| 040 | 2 7/8 | 3 | 2.864" | 3.004" | Durometer 70A (Medium) | ASTM D2000, MIL-P-83461, SAE AS568, SAE J200 | -65° to 275° | Black | 10 | 0000000 | 00000 | 00000 |
| 042 | 3 1/4 | 3 3/8 | 3.239" | 3.379" | Durometer 70A (Medium) | ASTM D2000, MIL-P-83461, SAE AS568, SAE J200 | -65° to 275° | Black | 10 | 00000000 | 00000 | 00000 |
| 043 | 3 1/2 | 3 5/8 | 3.489" | 3.629" | Durometer 70A (Medium) | ASTM D2000, MIL-P-83461, SAE AS568, SAE J200 | -65° to 275° | Black | 10 | 00000000 | 00000 | 00000 |
| 044 | 3 3/4 | 3 7/8 | 3.739" | 3.879" | Durometer 70A (Medium) | ASTM D2000, MIL-P-83461, SAE AS568, SAE J200 | -65° to 275° | Black | 10 | 00000000 | 00000 | 00000 |
Wd.: 3/32 Fractional (0.103" Actual) | ||||||||||||
| 110 | 3/8 | 9/16 | 0.362" | 0.568" | Durometer 70A (Medium) | ASTM D2000, MIL-P-83461, SAE AS568, SAE J200 | -65° to 275° | Black | 50 | 00000000 | 00000 | 00000 |
| 113 | 9/16 | 3/4 | 0.549" | 0.755" | Durometer 70A (Medium) | ASTM D2000, MIL-P-83461, SAE AS568, SAE J200 | -65° to 275° | Black | 50 | 00000000 | 00000 | 00000 |
| 114 | 5/8 | 13/16 | 0.612" | 0.818" | Durometer 70A (Medium) | ASTM D2000, MIL-P-83461, SAE AS568, SAE J200 | -65° to 275° | Black | 50 | 00000000 | 00000 | 00000 |
| 115 | 11/16 | 7/8 | 0.674" | 0.88" | Durometer 70A (Medium) | ASTM D2000, MIL-P-83461, SAE AS568, SAE J200 | -65° to 275° | Black | 50 | 00000000 | 00000 | 00000 |
| 117 | 13/16 | 1 | 0.799" | 1.005" | Durometer 70A (Medium) | ASTM D2000, MIL-P-83461, SAE AS568, SAE J200 | -65° to 275° | Black | 50 | 00000000 | 00000 | 00000 |
| 119 | 15/16 | 1 1/8 | 0.924" | 1.13" | Durometer 70A (Medium) | ASTM D2000, MIL-P-83461, SAE AS568, SAE J200 | -65° to 275° | Black | 50 | 00000000 | 00000 | 00000 |
| 120 | 1 | 1 3/16 | 0.987" | 1.193" | Durometer 70A (Medium) | ASTM D2000, MIL-P-83461, SAE AS568, SAE J200 | -65° to 275° | Black | 50 | 00000000 | 00000 | 00000 |
| 127 | 1 7/16 | 1 5/8 | 1.424" | 1.63" | Durometer 70A (Medium) | ASTM D2000, MIL-P-83461, SAE AS568, SAE J200 | -65° to 275° | Black | 25 | 00000000 | 00000 | 00000 |
| 129 | 1 9/16 | 1 3/4 | 1.549" | 1.755" | Durometer 70A (Medium) | ASTM D2000, MIL-P-83461, SAE AS568, SAE J200 | -65° to 275° | Black | 25 | 00000000 | 00000 | 00000 |
| 130 | 1 5/8 | 1 13/16 | 1.612" | 1.818" | Durometer 70A (Medium) | ASTM D2000, MIL-P-83461, SAE AS568, SAE J200 | -65° to 275° | Black | 25 | 00000000 | 00000 | 00000 |
| 140 | 2 1/4 | 2 7/16 | 2.237" | 2.443" | Durometer 70A (Medium) | ASTM D2000, MIL-P-83461, SAE AS568, SAE J200 | -65° to 275° | Black | 10 | 00000000 | 00000 | 00000 |
| 146 | 2 5/8 | 2 13/16 | 2.612" | 2.818" | Durometer 70A (Medium) | ASTM D2000, MIL-P-83461, SAE AS568, SAE J200 | -65° to 275° | Black | 10 | 00000000 | 00000 | 00000 |
| 152 | 3 1/4 | 3 7/16 | 3.237" | 3.443" | Durometer 70A (Medium) | ASTM D2000, MIL-P-83461, SAE AS568, SAE J200 | -65° to 275° | Black | 10 | 00000000 | 00000 | 00000 |
| 158 | 4 3/4 | 4 15/16 | 4.737" | 4.943" | Durometer 70A (Medium) | ASTM D2000, MIL-P-83461, SAE AS568, SAE J200 | -65° to 275° | Black | 5 | 00000000 | 00000 | 00000 |
| 159 | 5 | 5 3/16 | 4.987" | 5.193" | Durometer 70A (Medium) | ASTM D2000, MIL-P-83461, SAE AS568, SAE J200 | -65° to 275° | Black | 5 | 00000000 | 00000 | 00000 |
| 163 | 6 | 6 3/16 | 5.987" | 6.193" | Durometer 70A (Medium) | ASTM D2000, MIL-P-83461, SAE AS568, SAE J200 | -65° to 275° | Black | 2 | 00000000 | 00000 | 00000 |
Wd.: 1/8 Fractional (0.139" Actual) | ||||||||||||
| 206 | 1/2 | 3/4 | 0.484" | 0.762" | Durometer 70A (Medium) | ASTM D2000, MIL-P-83461, SAE AS568, SAE J200 | -65° to 275° | Black | 50 | 00000000 | 00000 | 00000 |
| 208 | 5/8 | 7/8 | 0.609" | 0.887" | Durometer 70A (Medium) | ASTM D2000, MIL-P-83461, SAE AS568, SAE J200 | -65° to 275° | Black | 50 | 00000000 | 00000 | 00000 |
| 217 | 1 3/16 | 1 7/16 | 1.171" | 1.449" | Durometer 70A (Medium) | ASTM D2000, MIL-P-83461, SAE AS568, SAE J200 | -65° to 275° | Black | 25 | 00000000 | 00000 | 00000 |
| 218 | 1 1/4 | 1 1/2 | 1.234" | 1.512" | Durometer 70A (Medium) | ASTM D2000, MIL-P-83461, SAE AS568, SAE J200 | -65° to 275° | Black | 25 | 00000000 | 00000 | 00000 |
| 220 | 1 3/8 | 1 5/8 | 1.359" | 1.637" | Durometer 70A (Medium) | ASTM D2000, MIL-P-83461, SAE AS568, SAE J200 | -65° to 275° | Black | 25 | 00000000 | 00000 | 00000 |
| 225 | 1 7/8 | 2 1/8 | 1.859" | 2.137" | Durometer 70A (Medium) | ASTM D2000, MIL-P-83461, SAE AS568, SAE J200 | -65° to 275° | Black | 10 | 00000000 | 00000 | 00000 |
| 226 | 2 | 2 1/4 | 1.984" | 2.262" | Durometer 70A (Medium) | ASTM D2000, MIL-P-83461, SAE AS568, SAE J200 | -65° to 275° | Black | 10 | 00000000 | 00000 | 00000 |
| 227 | 2 1/8 | 2 3/8 | 2.109" | 2.387" | Durometer 70A (Medium) | ASTM D2000, MIL-P-83461, SAE AS568, SAE J200 | -65° to 275° | Black | 10 | 00000000 | 00000 | 00000 |
| 228 | 2 1/4 | 2 1/2 | 2.234" | 2.512" | Durometer 70A (Medium) | ASTM D2000, MIL-P-83461, SAE AS568, SAE J200 | -65° to 275° | Black | 10 | 00000000 | 00000 | 00000 |
| 229 | 2 3/8 | 2 5/8 | 2.359" | 2.637" | Durometer 70A (Medium) | ASTM D2000, MIL-P-83461, SAE AS568, SAE J200 | -65° to 275° | Black | 10 | 00000000 | 00000 | 00000 |
| 230 | 2 1/2 | 2 3/4 | 2.484" | 2.762" | Durometer 70A (Medium) | ASTM D2000, MIL-P-83461, SAE AS568, SAE J200 | -65° to 275° | Black | 10 | 00000000 | 00000 | 00000 |
| 233 | 2 7/8 | 3 1/8 | 2.859" | 3.137" | Durometer 70A (Medium) | ASTM D2000, MIL-P-83461, SAE AS568, SAE J200 | -65° to 275° | Black | 10 | 0000000 | 00000 | 00000 |
| 234 | 3 | 3 1/4 | 2.984" | 3.262" | Durometer 70A (Medium) | ASTM D2000, MIL-P-83461, SAE AS568, SAE J200 | -65° to 275° | Black | 10 | 00000000 | 00000 | 00000 |
| 236 | 3 1/4 | 3 1/2 | 3.234" | 3.512" | Durometer 70A (Medium) | ASTM D2000, MIL-P-83461, SAE AS568, SAE J200 | -65° to 275° | Black | 10 | 00000000 | 00000 | 00000 |
| 246 | 4 1/2 | 4 3/4 | 4.484" | 4.762" | Durometer 70A (Medium) | ASTM D2000, MIL-P-83461, SAE AS568, SAE J200 | -65° to 275° | Black | 5 | 00000000 | 00000 | 00000 |
| 249 | 4 7/8 | 5 1/8 | 4.859" | 5.137" | Durometer 70A (Medium) | ASTM D2000, MIL-P-83461, SAE AS568, SAE J200 | -65° to 275° | Black | 5 | 00000000 | 00000 | 00000 |
| 251 | 5 1/8 | 5 3/8 | 5.109" | 5.387" | Durometer 70A (Medium) | ASTM D2000, MIL-P-83461, SAE AS568, SAE J200 | -65° to 275° | Black | 5 | 00000000 | 00000 | 00000 |
| 264 | 7 1/2 | 7 3/4 | 7.484" | 7.762" | Durometer 70A (Medium) | ASTM D2000, MIL-P-83461, SAE AS568, SAE J200 | -65° to 275° | Black | 2 | 00000000 | 00000 | 00000 |
Wd.: 3/16 Fractional (0.21" Actual) | ||||||||||||
| 372 | 8 3/4 | 9 1/8 | 8.725" | 9.145" | Durometer 70A (Medium) | ASTM D2000, MIL-P-83461, SAE AS568, SAE J200 | -65° to 275° | Black | 2 | 00000000 | 00000 | 00000 |
Wd.: 1/4 Fractional (0.275" Actual) | ||||||||||||
| 433 | 5 1/2 | 6 | 5.475" | 6.025" | Durometer 70A (Medium) | ASTM D2000, MIL-P-83461, SAE AS568, SAE J200 | -65° to 275° | Black | 2 | 0000000 | 00000 | 00000 |