These O-rings resist grease, hydraulic oil, and motor oil—plus mild chemicals and water.
System of Measurement :Inch, Header Primary :Oil-Resistant Mil. Spec. Buna-N O-Ring, Specifications Met :ASTM D2000, MIL-I-45208, SAE AS3578, SAE AS568, SAE J200, Fractional ID :4 1/8", Fractional ID Tolerance :±0.026", Fractional OD :4 3/8", Fractional Width :1/8", Actual Width :0.139", Actual Width Tolerance :±0.004", Actual ID :4.109", Actual OD :4.387", Color :Black, Temperature Range :-20° to 250° F, Hardness :Durometer 65A, Material :Buna-N Rubber, Header Secondary :1/8 Fractional Width, Dash No. 243,-20° to 250°F, Dash Number :243, Level :Mil.Spec,
+ Add to CartSystem of Measurement :Inch, Header Primary :Oil-Resistant Mil. Spec. Buna-N O-Ring, Specifications Met :ASTM D2000, MIL-I-45208, SAE AS3578, SAE AS568, SAE J200, Fractional ID :4 1/4", Fractional ID Tolerance :±0.026", Fractional OD :4 1/2", Fractional Width :1/8", Actual Width :0.139", Actual Width Tolerance :±0.004", Actual ID :4.234", Actual OD :4.512", Color :Black, Temperature Range :-20° to 250° F, Hardness :Durometer 65A, Material :Buna-N Rubber, Header Secondary :1/8 Fractional Width, Dash No. 244,-20° to 250°F, Dash Number :244, Level :Mil.Spec,
+ Add to CartSystem of Measurement :Inch, Header Primary :Oil-Resistant Mil. Spec. Buna-N O-Ring, Specifications Met :ASTM D2000, MIL-I-45208, SAE AS3578, SAE AS568, SAE J200, Fractional ID :5 3/8", Fractional ID Tolerance :±0.035", Fractional OD :5 5/8", Fractional Width :1/8", Actual Width :0.139", Actual Width Tolerance :±0.004", Actual ID :5.359", Actual OD :5.637", Color :Black, Temperature Range :-20° to 250° F, Hardness :Durometer 65A, Material :Buna-N Rubber, Header Secondary :1/8 Fractional Width, Dash No. 253,-20° to 250°F, Dash Number :253, Level :Mil.Spec,
+ Add to CartSystem of Measurement :Inch, Header Primary :Oil-Resistant Mil. Spec. Buna-N O-Ring, Specifications Met :ASTM D2000, MIL-I-45208, SAE AS3578, SAE AS568, SAE J200, Fractional ID :5 1/2", Fractional ID Tolerance :±0.035", Fractional OD :5 3/4", Fractional Width :1/8", Actual Width :0.139", Actual Width Tolerance :±0.004", Actual ID :5.484", Actual OD :5.762", Color :Black, Temperature Range :-20° to 250° F, Hardness :Durometer 65A, Material :Buna-N Rubber, Header Secondary :1/8 Fractional Width, Dash No. 254,-20° to 250°F, Dash Number :254, Level :Mil.Spec,
+ Add to CartSystem of Measurement :Inch, Header Primary :Oil-Resistant Mil. Spec. Buna-N O-Ring, Specifications Met :ASTM D2000, MIL-I-45208, SAE AS3578, SAE AS568, SAE J200, Fractional ID :5 5/8", Fractional ID Tolerance :±0.035", Fractional OD :5 7/8", Fractional Width :1/8", Actual Width :0.139", Actual Width Tolerance :±0.004", Actual ID :5.609", Actual OD :5.887", Color :Black, Temperature Range :-20° to 250° F, Hardness :Durometer 65A, Material :Buna-N Rubber, Header Secondary :1/8 Fractional Width, Dash No. 255,-20° to 250°F, Dash Number :255, Level :Mil.Spec,
+ Add to CartSystem of Measurement :Inch, Header Primary :Oil-Resistant Mil. Spec. Buna-N O-Ring, Specifications Met :ASTM D2000, MIL-I-45208, SAE AS3578, SAE AS568, SAE J200, Fractional ID :5 3/4", Fractional ID Tolerance :±0.035", Fractional OD :6", Fractional Width :1/8", Actual Width :0.139", Actual Width Tolerance :±0.004", Actual ID :5.734", Actual OD :6.012", Color :Black, Temperature Range :-20° to 250° F, Hardness :Durometer 65A, Material :Buna-N Rubber, Header Secondary :1/8 Fractional Width, Dash No. 256,-20° to 250°F, Dash Number :256, Level :Mil.Spec,
+ Add to CartSystem of Measurement :Inch, Header Primary :Oil-Resistant Mil. Spec. Buna-N O-Ring, Specifications Met :ASTM D2000, MIL-I-45208, SAE AS3578, SAE AS568, SAE J200, Fractional ID :6", Fractional ID Tolerance :±0.035", Fractional OD :6 1/4", Fractional Width :1/8", Actual Width :0.139", Actual Width Tolerance :±0.004", Actual ID :5.984", Actual OD :6.262", Color :Black, Temperature Range :-20° to 250° F, Hardness :Durometer 65A, Material :Buna-N Rubber, Header Secondary :1/8 Fractional Width, Dash No. 258,-20° to 250°F, Dash Number :258, Level :Mil.Spec,
+ Add to CartSystem of Measurement :Inch, Header Primary :Oil-Resistant Mil. Spec. Buna-N O-Ring, Specifications Met :ASTM D2000, MIL-I-45208, SAE AS3578, SAE AS568, SAE J200, Fractional ID :6 1/4", Fractional ID Tolerance :±0.035", Fractional OD :6 1/2", Fractional Width :1/8", Actual Width :0.139", Actual Width Tolerance :±0.004", Actual ID :6.234", Actual OD :6.512", Color :Black, Temperature Range :-20° to 250° F, Hardness :Durometer 65A, Material :Buna-N Rubber, Header Secondary :1/8 Fractional Width, Dash No. 259,-20° to 250°F, Dash Number :259, Level :Mil.Spec,
+ Add to CartSystem of Measurement :Inch, Header Primary :Oil-Resistant Mil. Spec. Buna-N O-Ring, Specifications Met :ASTM D2000, MIL-I-45208, SAE AS3578, SAE AS568, SAE J200, Fractional ID :6 1/2", Fractional ID Tolerance :±0.035", Fractional OD :6 3/4", Fractional Width :1/8", Actual Width :0.139", Actual Width Tolerance :±0.004", Actual ID :6.484", Actual OD :6.762", Color :Black, Temperature Range :-20° to 250° F, Hardness :Durometer 65A, Material :Buna-N Rubber, Header Secondary :1/8 Fractional Width, Dash No. 260,-20° to 250°F, Dash Number :260, Level :Mil.Spec,
+ Add to CartSystem of Measurement :Inch, Header Primary :Oil-Resistant Mil. Spec. Buna-N O-Ring, Specifications Met :ASTM D2000, MIL-I-45208, SAE AS3578, SAE AS568, SAE J200, Fractional ID :6 3/4", Fractional ID Tolerance :±0.035", Fractional OD :7", Fractional Width :1/8", Actual Width :0.139", Actual Width Tolerance :±0.004", Actual ID :6.734", Actual OD :7.012", Color :Black, Temperature Range :-20° to 250° F, Hardness :Durometer 65A, Material :Buna-N Rubber, Header Secondary :1/8 Fractional Width, Dash No. 261,-20° to 250°F, Dash Number :261, Level :Mil.Spec,
+ Add to CartSystem of Measurement :Inch, Header Primary :Oil-Resistant Mil. Spec. Buna-N O-Ring, Specifications Met :ASTM D2000, MIL-I-45208, SAE AS3578, SAE AS568, SAE J200, Fractional ID :7", Fractional ID Tolerance :±0.035", Fractional OD :7 1/4", Fractional Width :1/8", Actual Width :0.139", Actual Width Tolerance :±0.004", Actual ID :6.984", Actual OD :7.262", Color :Black, Temperature Range :-20° to 250° F, Hardness :Durometer 65A, Material :Buna-N Rubber, Header Secondary :1/8 Fractional Width, Dash No. 262,-20° to 250°F, Dash Number :262, Level :Mil.Spec,
+ Add to CartSystem of Measurement :Inch, Header Primary :Oil-Resistant Mil. Spec. Buna-N O-Ring, Specifications Met :ASTM D2000, MIL-I-45208, SAE AS3578, SAE AS568, SAE J200, Fractional ID :10", Fractional ID Tolerance :±0.047", Fractional OD :10 1/4", Fractional Width :1/8", Actual Width :0.139", Actual Width Tolerance :±0.004", Actual ID :9.984", Actual OD :10.262", Color :Black, Temperature Range :-20° to 250° F, Hardness :Durometer 65A, Material :Buna-N Rubber, Header Secondary :1/8 Fractional Width, Dash No. 274,-20° to 250°F, Dash Number :274, Level :Mil.Spec,
+ Add to CartSystem of Measurement :Inch, Header Primary :Oil-Resistant Mil. Spec. Buna-N O-Ring, Specifications Met :ASTM D2000, MIL-I-45208, SAE AS3578, SAE AS568, SAE J200, Fractional ID :13", Fractional ID Tolerance :±0.082", Fractional OD :13 1/4", Fractional Width :1/8", Actual Width :0.139", Actual Width Tolerance :±0.004", Actual ID :12.984", Actual OD :13.262", Color :Black, Temperature Range :-20° to 250° F, Hardness :Durometer 65A, Material :Buna-N Rubber, Header Secondary :1/8 Fractional Width, Dash No. 279,-20° to 250°F, Dash Number :279, Level :Mil.Spec,
+ Add to CartSystem of Measurement :Inch, Header Primary :Oil-Resistant Mil. Spec. Buna-N O-Ring, Specifications Met :ASTM D2000, MIL-I-45208, SAE AS3578, SAE AS568, SAE J200, Fractional ID :1/2", Fractional ID Tolerance :±0.007", Fractional OD :7/8", Fractional Width :3/16", Actual Width :0.21", Actual Width Tolerance :±0.005", Actual ID :0.475", Actual OD :0.895", Color :Black, Temperature Range :-20° to 250° F, Hardness :Durometer 65A, Material :Buna-N Rubber, Header Secondary :3/16 Fractional Width, Dash No. 310,-20° to 250°F, Dash Number :310, Level :Mil.Spec,
+ Add to CartSystem of Measurement :Inch, Header Primary :Oil-Resistant Mil. Spec. Buna-N O-Ring, Specifications Met :ASTM D2000, MIL-I-45208, SAE AS3578, SAE AS568, SAE J200, Fractional ID :9/16", Fractional ID Tolerance :±0.007", Fractional OD :15/16", Fractional Width :3/16", Actual Width :0.21", Actual Width Tolerance :±0.005", Actual ID :0.537", Actual OD :0.957", Color :Black, Temperature Range :-20° to 250° F, Hardness :Durometer 65A, Material :Buna-N Rubber, Header Secondary :3/16 Fractional Width, Dash No. 311,-20° to 250°F, Dash Number :311, Level :Mil.Spec,
+ Add to CartSystem of Measurement :Inch, Header Primary :Oil-Resistant Mil. Spec. Buna-N O-Ring, Specifications Met :ASTM D2000, MIL-I-45208, SAE AS3578, SAE AS568, SAE J200, Fractional ID :5/8", Fractional ID Tolerance :±0.007", Fractional OD :1", Fractional Width :3/16", Actual Width :0.21", Actual Width Tolerance :±0.005", Actual ID :0.6", Actual OD :1.02", Color :Black, Temperature Range :-20° to 250° F, Hardness :Durometer 65A, Material :Buna-N Rubber, Header Secondary :3/16 Fractional Width, Dash No. 312,-20° to 250°F, Dash Number :312, Level :Mil.Spec,
+ Add to CartSystem of Measurement :Inch, Header Primary :Oil-Resistant Mil. Spec. Buna-N O-Ring, Specifications Met :ASTM D2000, MIL-I-45208, SAE AS3578, SAE AS568, SAE J200, Fractional ID :11/16", Fractional ID Tolerance :±0.007", Fractional OD :1 1/16", Fractional Width :3/16", Actual Width :0.21", Actual Width Tolerance :±0.005", Actual ID :0.662", Actual OD :1.082", Color :Black, Temperature Range :-20° to 250° F, Hardness :Durometer 65A, Material :Buna-N Rubber, Header Secondary :3/16 Fractional Width, Dash No. 313,-20° to 250°F, Dash Number :313, Level :Mil.Spec,
+ Add to CartSystem of Measurement :Inch, Header Primary :Oil-Resistant Mil. Spec. Buna-N O-Ring, Specifications Met :ASTM D2000, MIL-I-45208, SAE AS3578, SAE AS568, SAE J200, Fractional ID :1 3/16", Fractional ID Tolerance :±0.009", Fractional OD :1 9/16", Fractional Width :3/16", Actual Width :0.21", Actual Width Tolerance :±0.005", Actual ID :1.162", Actual OD :1.582", Color :Black, Temperature Range :-20° to 250° F, Hardness :Durometer 65A, Material :Buna-N Rubber, Header Secondary :3/16 Fractional Width, Dash No. 321,-20° to 250°F, Dash Number :321, Level :Mil.Spec,
+ Add to CartSystem of Measurement :Inch, Header Primary :Oil-Resistant Mil. Spec. Buna-N O-Ring, Specifications Met :ASTM D2000, MIL-I-45208, SAE AS3578, SAE AS568, SAE J200, Fractional ID :1 1/4", Fractional ID Tolerance :±0.012", Fractional OD :1 5/8", Fractional Width :3/16", Actual Width :0.21", Actual Width Tolerance :±0.005", Actual ID :1.225", Actual OD :1.645", Color :Black, Temperature Range :-20° to 250° F, Hardness :Durometer 65A, Material :Buna-N Rubber, Header Secondary :3/16 Fractional Width, Dash No. 322,-20° to 250°F, Dash Number :322, Level :Mil.Spec,
+ Add to CartSystem of Measurement :Inch, Header Primary :Oil-Resistant Mil. Spec. Buna-N O-Ring, Specifications Met :ASTM D2000, MIL-I-45208, SAE AS3578, SAE AS568, SAE J200, Fractional ID :1 3/8", Fractional ID Tolerance :±0.012", Fractional OD :1 3/4", Fractional Width :3/16", Actual Width :0.21", Actual Width Tolerance :±0.005", Actual ID :1.35", Actual OD :1.77", Color :Black, Temperature Range :-20° to 250° F, Hardness :Durometer 65A, Material :Buna-N Rubber, Header Secondary :3/16 Fractional Width, Dash No. 324,-20° to 250°F, Dash Number :324, Level :Mil.Spec,
+ Add to CartSystem of Measurement :Inch, Header Primary :Oil-Resistant Mil. Spec. Buna-N O-Ring, Specifications Met :ASTM D2000, MIL-I-45208, SAE AS3578, SAE AS568, SAE J200, Fractional ID :1 1/2", Fractional ID Tolerance :±0.012", Fractional OD :1 7/8", Fractional Width :3/16", Actual Width :0.21", Actual Width Tolerance :±0.005", Actual ID :1.475", Actual OD :1.895", Color :Black, Temperature Range :-20° to 250° F, Hardness :Durometer 65A, Material :Buna-N Rubber, Header Secondary :3/16 Fractional Width, Dash No. 325,-20° to 250°F, Dash Number :325, Level :Mil.Spec,
+ Add to CartSystem of Measurement :Inch, Header Primary :Oil-Resistant Mil. Spec. Buna-N O-Ring, Specifications Met :ASTM D2000, MIL-I-45208, SAE AS3578, SAE AS568, SAE J200, Fractional ID :1 5/8", Fractional ID Tolerance :±0.014", Fractional OD :2", Fractional Width :3/16", Actual Width :0.21", Actual Width Tolerance :±0.005", Actual ID :1.6", Actual OD :2.02", Color :Black, Temperature Range :-20° to 250° F, Hardness :Durometer 65A, Material :Buna-N Rubber, Header Secondary :3/16 Fractional Width, Dash No. 326,-20° to 250°F, Dash Number :326, Level :Mil.Spec,
+ Add to CartSystem of Measurement :Inch, Header Primary :Oil-Resistant Mil. Spec. Buna-N O-Ring, Specifications Met :ASTM D2000, MIL-I-45208, SAE AS3578, SAE AS568, SAE J200, Fractional ID :1 3/4", Fractional ID Tolerance :±0.014", Fractional OD :2 1/8", Fractional Width :3/16", Actual Width :0.21", Actual Width Tolerance :±0.005", Actual ID :1.725", Actual OD :2.145", Color :Black, Temperature Range :-20° to 250° F, Hardness :Durometer 65A, Material :Buna-N Rubber, Header Secondary :3/16 Fractional Width, Dash No. 327,-20° to 250°F, Dash Number :327, Level :Mil.Spec,
+ Add to CartSystem of Measurement :Inch, Header Primary :Oil-Resistant Mil. Spec. Buna-N O-Ring, Specifications Met :ASTM D2000, MIL-I-45208, SAE AS3578, SAE AS568, SAE J200, Fractional ID :1 7/8", Fractional ID Tolerance :±0.014", Fractional OD :2 1/4", Fractional Width :3/16", Actual Width :0.21", Actual Width Tolerance :±0.005", Actual ID :1.85", Actual OD :2.27", Color :Black, Temperature Range :-20° to 250° F, Hardness :Durometer 65A, Material :Buna-N Rubber, Header Secondary :3/16 Fractional Width, Dash No. 328,-20° to 250°F, Dash Number :328, Level :Mil.Spec,
+ Add to CartSystem of Measurement :Inch, Header Primary :Oil-Resistant Mil. Spec. Buna-N O-Ring, Specifications Met :ASTM D2000, MIL-I-45208, SAE AS3578, SAE AS568, SAE J200, Fractional ID :2", Fractional ID Tolerance :±0.014", Fractional OD :2 3/8", Fractional Width :3/16", Actual Width :0.21", Actual Width Tolerance :±0.005", Actual ID :1.975", Actual OD :2.395", Color :Black, Temperature Range :-20° to 250° F, Hardness :Durometer 65A, Material :Buna-N Rubber, Header Secondary :3/16 Fractional Width, Dash No. 329,-20° to 250°F, Dash Number :329, Level :Mil.Spec,
+ Add to CartSystem of Measurement :Inch, Header Primary :Oil-Resistant Mil. Spec. Buna-N O-Ring, Specifications Met :ASTM D2000, MIL-I-45208, SAE AS3578, SAE AS568, SAE J200, Fractional ID :2 1/8", Fractional ID Tolerance :±0.017", Fractional OD :2 1/2", Fractional Width :3/16", Actual Width :0.21", Actual Width Tolerance :±0.005", Actual ID :2.1", Actual OD :2.52", Color :Black, Temperature Range :-20° to 250° F, Hardness :Durometer 65A, Material :Buna-N Rubber, Header Secondary :3/16 Fractional Width, Dash No. 330,-20° to 250°F, Dash Number :330, Level :Mil.Spec,
+ Add to CartSystem of Measurement :Inch, Header Primary :Oil-Resistant Mil. Spec. Buna-N O-Ring, Specifications Met :ASTM D2000, MIL-I-45208, SAE AS3578, SAE AS568, SAE J200, Fractional ID :2 1/4", Fractional ID Tolerance :±0.017", Fractional OD :2 5/8", Fractional Width :3/16", Actual Width :0.21", Actual Width Tolerance :±0.005", Actual ID :2.225", Actual OD :2.645", Color :Black, Temperature Range :-20° to 250° F, Hardness :Durometer 65A, Material :Buna-N Rubber, Header Secondary :3/16 Fractional Width, Dash No. 331,-20° to 250°F, Dash Number :331, Level :Mil.Spec,
+ Add to CartSystem of Measurement :Inch, Header Primary :Oil-Resistant Mil. Spec. Buna-N O-Ring, Specifications Met :ASTM D2000, MIL-I-45208, SAE AS3578, SAE AS568, SAE J200, Fractional ID :2 3/8", Fractional ID Tolerance :±0.017", Fractional OD :2 3/4", Fractional Width :3/16", Actual Width :0.21", Actual Width Tolerance :±0.005", Actual ID :2.35", Actual OD :2.77", Color :Black, Temperature Range :-20° to 250° F, Hardness :Durometer 65A, Material :Buna-N Rubber, Header Secondary :3/16 Fractional Width, Dash No. 332,-20° to 250°F, Dash Number :332, Level :Mil.Spec,
+ Add to CartSystem of Measurement :Inch, Header Primary :Oil-Resistant Mil. Spec. Buna-N O-Ring, Specifications Met :ASTM D2000, MIL-I-45208, SAE AS3578, SAE AS568, SAE J200, Fractional ID :3 3/8", Fractional ID Tolerance :±0.026", Fractional OD :3 3/4", Fractional Width :3/16", Actual Width :0.21", Actual Width Tolerance :±0.005", Actual ID :3.35", Actual OD :3.77", Color :Black, Temperature Range :-20° to 250° F, Hardness :Durometer 65A, Material :Buna-N Rubber, Header Secondary :3/16 Fractional Width, Dash No. 340,-20° to 250°F, Dash Number :340, Level :Mil.Spec,
+ Add to CartSystem of Measurement :Inch, Header Primary :Oil-Resistant Mil. Spec. Buna-N O-Ring, Specifications Met :ASTM D2000, MIL-I-45208, SAE AS3578, SAE AS568, SAE J200, Fractional ID :3 1/2", Fractional ID Tolerance :±0.026", Fractional OD :3 7/8", Fractional Width :3/16", Actual Width :0.21", Actual Width Tolerance :±0.005", Actual ID :3.475", Actual OD :3.895", Color :Black, Temperature Range :-20° to 250° F, Hardness :Durometer 65A, Material :Buna-N Rubber, Header Secondary :3/16 Fractional Width, Dash No. 341,-20° to 250°F, Dash Number :341, Level :Mil.Spec,
+ Add to Cart