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    46 Products
    About O-Rings
    industrial info icon

    Find the right size, compare compatible materials, and choose the best cross section shape for your O-ring.

    Oil-Resistant Mil. Spec. Buna-N O-Rings

    Image of Product. Front orientation. O-Rings. Oil-Resistant Mil. Spec. Buna-N O-Rings.
    Image of Attribute. Front orientation. CrossSection view. Contains Annotated. O-Rings. 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.
    MIL-P-25732—O-rings that meet MIL-P-25732 are the most common choice for use with hydraulic oil. They’ll withstand short periods of use at high temperatures.
    Fractional
    Pkg.
    Dash
    No.
    ID
    OD
    ID
    OD
    Hardness
    Specs. Met
    Mil. Spec.
    Temp. Range,
    ° F
    Color
    Pkg.
    Qty.
    1-9
    10-Up
    3/64 Fractional (Width 0.05" Wide)
    002
    		3/649/640.042"0.142"Durometer 70A (Medium)ASTM D2000, SAE AS568, SAE J200MIL-P-25732-30 to 250Black504198T112000000000000
     
    1/16 Fractional Width (0.07" Wide)
    004
    		5/6413/640.07"0.21"Durometer 70A (Medium)ASTM D2000, SAE AS568, SAE J200MIL-P-25732-30 to 250Black504198T1140000000000
    005
    		3/327/320.101"0.241"Durometer 70A (Medium)ASTM D2000, SAE AS568, SAE J200MIL-P-25732-30 to 250Black504198T1150000000000
    006
    		1/81/40.114"0.254"Durometer 70A (Medium)ASTM D2000, SAE AS568, SAE J200MIL-P-25732-30 to 250Black504198T5010000000000
    007
    		5/329/320.145"0.285"Durometer 70A (Medium)ASTM D2000, SAE AS568, SAE J200MIL-P-25732-30 to 250Black504198T5020000000000
    008
    		3/165/160.176"0.316"Durometer 70A (Medium)ASTM D2000, SAE AS568, SAE J200MIL-P-25732-30 to 250Black504198T5030000000000
    009
    		7/3211/320.208"0.348"Durometer 70A (Medium)ASTM D2000, SAE AS568, SAE J200MIL-P-25732-30 to 250Black504198T5040000000000
    010
    		1/43/80.239"0.379"Durometer 70A (Medium)ASTM D2000, SAE AS568, SAE J200MIL-P-25732-30 to 250Black504198T5050000000000
    011
    		5/167/160.301"0.441"Durometer 70A (Medium)ASTM D2000, SAE AS568, SAE J200MIL-P-25732-30 to 250Black504198T5060000000000
    012
    		3/81/20.364"0.504"Durometer 70A (Medium)ASTM D2000, SAE AS568, SAE J200MIL-P-25732-30 to 250Black504198T5070000000000
    013
    		7/169/160.426"0.566"Durometer 70A (Medium)ASTM D2000, SAE AS568, SAE J200MIL-P-25732-30 to 250Black504198T5080000000000
    014
    		1/25/80.489"0.629"Durometer 70A (Medium)ASTM D2000, SAE AS568, SAE J200MIL-P-25732-30 to 250Black504198T5090000000000
    015
    		9/1611/160.551"0.691"Durometer 70A (Medium)ASTM D2000, SAE AS568, SAE J200MIL-P-25732-30 to 250Black504198T5110000000000
    016
    		5/83/40.614"0.754"Durometer 70A (Medium)ASTM D2000, SAE AS568, SAE J200MIL-P-25732-30 to 250Black504198T1260000000000
    017
    		11/1613/160.676"0.816"Durometer 70A (Medium)ASTM D2000, SAE AS568, SAE J200MIL-P-25732-30 to 250Black504198T1270000000000
    018
    		3/47/80.739"0.879"Durometer 70A (Medium)ASTM D2000, SAE AS568, SAE J200MIL-P-25732-30 to 250Black504198T1280000000000
    019
    		13/1615/160.801"0.941"Durometer 70A (Medium)ASTM D2000, SAE AS568, SAE J200MIL-P-25732-30 to 250Black504198T1290000000000
    021
    		15/161 1/160.926"1.066"Durometer 70A (Medium)ASTM D2000, SAE AS568, SAE J200MIL-P-25732-30 to 250Black504198T1310000000000
    022
    		11 1/80.989"1.129"Durometer 70A (Medium)ASTM D2000, SAE AS568, SAE J200MIL-P-25732-30 to 250Black504198T1320000000000
    029
    		1 1/21 5/81.489"1.629"Durometer 70A (Medium)ASTM D2000, SAE AS568, SAE J200MIL-P-25732-30 to 250Black254198T1390000000000
    037
    		2 1/22 5/82.489"2.629"Durometer 70A (Medium)ASTM D2000, SAE AS568, SAE J200MIL-P-25732-30 to 250Black104198T5240000000000
    041
    		33 1/82.989"3.129"Durometer 70A (Medium)ASTM D2000, SAE AS568, SAE J200MIL-P-25732-30 to 250Black104198T1510000000000
    042
    		3 1/43 3/83.239"3.379"Durometer 70A (Medium)ASTM D2000, SAE AS568, SAE J200MIL-P-25732-30 to 250Black104198T1520000000000
    043
    		3 1/23 5/83.489"3.629"Durometer 70A (Medium)ASTM D2000, SAE AS568, SAE J200MIL-P-25732-30 to 250Black104198T1530000000000
    044
    		3 3/43 7/83.739"3.879"Durometer 70A (Medium)ASTM D2000, SAE AS568, SAE J200MIL-P-25732-30 to 250Black104198T1540000000000
     
    3/32 Fractional Width (0.103" Wide)
    110
    		3/89/160.362"0.568"Durometer 70A (Medium)ASTM D2000, SAE AS568, SAE J200MIL-P-25732-30 to 250Black504198T5350000000000
    111
    		7/165/80.424"0.63"Durometer 70A (Medium)ASTM D2000, SAE AS568, SAE J200MIL-P-25732-30 to 250Black504198T5360000000000
    112
    		1/211/160.487"0.693"Durometer 70A (Medium)ASTM D2000, SAE AS568, SAE J200MIL-P-25732-30 to 250Black504198T5370000000000
    116
    		3/415/160.737"0.943"Durometer 70A (Medium)ASTM D2000, SAE AS568, SAE J200MIL-P-25732-30 to 250Black504198T1750000000000
    117
    		13/1610.799"1.005"Durometer 70A (Medium)ASTM D2000, SAE AS568, SAE J200MIL-P-25732-30 to 250Black504198T1760000000000
    118
    		7/81 1/160.862"1.068"Durometer 70A (Medium)ASTM D2000, SAE AS568, SAE J200MIL-P-25732-30 to 250Black504198T1770000000000
    152
    		3 1/43 7/163.237"3.443"Durometer 70A (Medium)ASTM D2000, SAE AS568, SAE J200MIL-P-25732-30 to 250Black104198T2210000000000
    153
    		3 1/23 11/163.487"3.693"Durometer 70A (Medium)ASTM D2000, SAE AS568, SAE J200MIL-P-25732-30 to 250Black104198T2220000000000
     
    1/8 Fractional Width (0.139" Wide)
    210
    		3/410.734"1.012"Durometer 70A (Medium)ASTM D2000, SAE AS568, SAE J200MIL-P-25732-30 to 250Black254198T5680000000000
    214
    		11 1/40.984"1.262"Durometer 70A (Medium)ASTM D2000, SAE AS568, SAE J200MIL-P-25732-30 to 250Black254198T5730000000000
    216
    		1 1/81 3/81.109"1.387"Durometer 70A (Medium)ASTM D2000, SAE AS568, SAE J200MIL-P-25732-30 to 250Black254198T2530000000000
    218
    		1 1/41 1/21.234"1.512"Durometer 70A (Medium)ASTM D2000, SAE AS568, SAE J200MIL-P-25732-30 to 250Black254198T2550000000000
    219
    		1 5/161 9/161.296"1.574"Durometer 70A (Medium)ASTM D2000, SAE AS568, SAE J200MIL-P-25732-30 to 250Black254198T2560000000000
    220
    		1 3/81 5/81.359"1.637"Durometer 70A (Medium)ASTM D2000, SAE AS568, SAE J200MIL-P-25732-30 to 250Black254198T2570000000000
    222
    		1 1/21 3/41.484"1.762"Durometer 70A (Medium)ASTM D2000, SAE AS568, SAE J200MIL-P-25732-30 to 250Black104198T575000000000
    235
    		3 1/83 3/83.109"3.387"Durometer 70A (Medium)ASTM D2000, SAE AS568, SAE J200MIL-P-25732-30 to 250Black104198T2720000000000
    237
    		3 3/83 5/83.359"3.637"Durometer 70A (Medium)ASTM D2000, SAE AS568, SAE J200MIL-P-25732-30 to 250Black104198T2740000000000
    239
    		3 5/83 7/83.609"3.887"Durometer 70A (Medium)ASTM D2000, SAE AS568, SAE J200MIL-P-25732-30 to 250Black104198T2760000000000
    241
    		3 7/84 1/83.859"4.137"Durometer 70A (Medium)ASTM D2000, SAE AS568, SAE J200MIL-P-25732-30 to 250Black104198T2780000000000
    252
    		5 1/45 1/25.234"5.512"Durometer 70A (Medium)ASTM D2000, SAE AS568, SAE J200MIL-P-25732-30 to 250Black54198T2890000000000
     
    3/16 Fractional Width (0.21" Wide)
    328
    		1 7/82 1/41.85"2.27"Durometer 70A (Medium)ASTM D2000, SAE AS568, SAE J200MIL-P-25732-30 to 250Black104198T3510000000000
     
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