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O-Rings

FSC 5331: O-Rings

Federal Supply Class (FSC) 5331 covers O-rings, the round-section elastomeric seals used to seal static and dynamic joints. The catalog includes O-rings built to AS568, MIL-SPEC, and industry standards.

O-rings seal connections in hydraulic, pneumatic, fuel, and fluid systems by compressing in a groove. They are among the most widely used sealing elements in machinery.

Common materials include nitrile (Buna-N), fluorocarbon (Viton), silicone, EPDM, and PTFE, selected for fluid compatibility and temperature range. Sizes follow standard dash-number series for repeatable replacement.

5331-00-404-4583 (5-141)

NIIN: 00-404-4583
In stock
NSN: 5331-00-404-4583
FSC Code: 5331
MPN: 5141

5331-00-291-4846 (5140-97-8)

NIIN: 00-291-4846
In stock
NSN: 5331-00-291-4846
FSC Code: 5331
MPN: 5140978

5331-00-141-4156 (5140-534002-36)

NIIN: 00-141-4156
In stock
NSN: 5331-00-141-4156
FSC Code: 5331
MPN: 514053400236

5331-00-576-5125 (5140-534051-196)

NIIN: 00-576-5125
In stock
NSN: 5331-00-576-5125
FSC Code: 5331
MPN: 5140534051196

5331-00-582-0796 (5140-534051-197)

NIIN: 00-582-0796
In stock
NSN: 5331-00-582-0796
FSC Code: 5331
MPN: 5140534051197

5331-00-558-0364 (5140-534001-16)

NIIN: 00-558-0364
In stock
NSN: 5331-00-558-0364
FSC Code: 5331
MPN: 514053400116

5331-00-826-7250 (5140-534051-194)

NIIN: 00-826-7250
In stock
NSN: 5331-00-826-7250
FSC Code: 5331
MPN: 5140534051194

5331-00-833-2222 (5140-534051-193)

NIIN: 00-833-2222
In stock
NSN: 5331-00-833-2222
FSC Code: 5331
MPN: 5140534051193

5331-00-833-2221 (5140-534051-191)

NIIN: 00-833-2221
In stock
NSN: 5331-00-833-2221
FSC Code: 5331
MPN: 5140534051191

5331-00-414-3967 (513CZ127)

NIIN: 00-414-3967
In stock
NSN: 5331-00-414-3967
FSC Code: 5331
MPN: 513CZ127

5331-01-143-7461 (513CY-226)

NIIN: 01-143-7461
In stock
NSN: 5331-01-143-7461
FSC Code: 5331
MPN: 513CY226

5331-00-146-7326 (513CZ215)

NIIN: 00-146-7326
In stock
NSN: 5331-00-146-7326
FSC Code: 5331
MPN: 513CZ215

5331-00-829-9951 (513CH704)

NIIN: 00-829-9951
In stock
NSN: 5331-00-829-9951
FSC Code: 5331
MPN: 513CH704

5331-00-450-8026 (513AM226)

NIIN: 00-450-8026
In stock
NSN: 5331-00-450-8026
FSC Code: 5331
MPN: 513AM226

5331-00-931-4653 (513CG-114)

NIIN: 00-931-4653
In stock
NSN: 5331-00-931-4653
FSC Code: 5331
MPN: 513CG114

5331-00-797-7591 (513BN700)

NIIN: 00-797-7591
In stock
NSN: 5331-00-797-7591
FSC Code: 5331
MPN: 513BN700

5331-00-450-8043 (513AM235)

NIIN: 00-450-8043
In stock
NSN: 5331-00-450-8043
FSC Code: 5331
MPN: 513AM235

5331-00-457-6918 (513CF212)

NIIN: 00-457-6918
In stock
NSN: 5331-00-457-6918
FSC Code: 5331
MPN: 513CF212

5331-00-470-9683 (513AJ238)

NIIN: 00-470-9683
In stock
NSN: 5331-00-470-9683
FSC Code: 5331
MPN: 513AJ238

5331-00-889-8799 (513AJ114)

NIIN: 00-889-8799
In stock
NSN: 5331-00-889-8799
FSC Code: 5331
MPN: 513AJ114

5331-00-779-6255 (513AJ212)

NIIN: 00-779-6255
In stock
NSN: 5331-00-779-6255
FSC Code: 5331
MPN: 513AJ212

5331-00-492-2524 (513AJ236)

NIIN: 00-492-2524
In stock
NSN: 5331-00-492-2524
FSC Code: 5331
MPN: 513AJ236

5331-00-787-3664 (513AJ113)

NIIN: 00-787-3664
In stock
NSN: 5331-00-787-3664
FSC Code: 5331
MPN: 513AJ113

5331-00-752-7803 (513BG119SH1)

NIIN: 00-752-7803
In stock
NSN: 5331-00-752-7803
FSC Code: 5331
MPN: 513BG119SH1

5331-00-492-2521 (513AJ240)

NIIN: 00-492-2521
In stock
NSN: 5331-00-492-2521
FSC Code: 5331
MPN: 513AJ240

5331-00-409-4632 (513AJ343)

NIIN: 00-409-4632
In stock
NSN: 5331-00-409-4632
FSC Code: 5331
MPN: 513AJ343

5331-00-409-4508 (513AJ234)

NIIN: 00-409-4508
In stock
NSN: 5331-00-409-4508
FSC Code: 5331
MPN: 513AJ234

5331-00-786-6503 (513A0-014)

NIIN: 00-786-6503
In stock
NSN: 5331-00-786-6503
FSC Code: 5331
MPN: 513A0014

5331-01-478-5354 (18753-0263)

NIIN: 01-478-5354
In stock
NSN: 5331-01-478-5354
FSC Code: 5331
MPN: 187530263

5331-01-045-2487 (5-139N506-65)

NIIN: 01-045-2487
In stock
NSN: 5331-01-045-2487
FSC Code: 5331
MPN: 5139N50665

5331-01-198-0093 (5-139V747-75)

NIIN: 01-198-0093
In stock
NSN: 5331-01-198-0093
FSC Code: 5331
MPN: 5139V74775

5331-01-098-6233 (5-137-V835-75)

NIIN: 01-098-6233
In stock
NSN: 5331-01-098-6233
FSC Code: 5331
MPN: 5137V83575

5331-00-221-0373 (5-139)

NIIN: 00-221-0373
In stock
NSN: 5331-00-221-0373
FSC Code: 5331
MPN: 5139

5331-00-938-9102 (5-138)

NIIN: 00-938-9102
In stock
NSN: 5331-00-938-9102
FSC Code: 5331
MPN: 5138

5331-01-566-5751 (1874302C1)

NIIN: 01-566-5751
In stock
NSN: 5331-01-566-5751
FSC Code: 5331
MPN: 1874302C1

5331-01-226-9086 (5-137-E515-80)

NIIN: 01-226-9086
In stock
NSN: 5331-01-226-9086
FSC Code: 5331
MPN: 5137E51580

5331-01-146-9920 (5-138)

NIIN: 01-146-9920
In stock
NSN: 5331-01-146-9920
FSC Code: 5331
MPN: 5138

5331-01-566-5752 (1874426C1)

NIIN: 01-566-5752
In stock
NSN: 5331-01-566-5752
FSC Code: 5331
MPN: 1874426C1

5331-01-241-3551 (513-8)

NIIN: 01-241-3551
In stock
NSN: 5331-01-241-3551
FSC Code: 5331
MPN: 5138

5331-01-566-5745 (1873915C1)

NIIN: 01-566-5745
In stock
NSN: 5331-01-566-5745
FSC Code: 5331
MPN: 1873915C1

5331-00-055-5048 (5-137-47-071)

NIIN: 00-055-5048
In stock
NSN: 5331-00-055-5048
FSC Code: 5331
MPN: 513747071

5331-01-566-5736 (1873373C1)

NIIN: 01-566-5736
In stock
NSN: 5331-01-566-5736
FSC Code: 5331
MPN: 1873373C1

5331-01-566-5733 (1873197C1)

NIIN: 01-566-5733
In stock
NSN: 5331-01-566-5733
FSC Code: 5331
MPN: 1873197C1

5331-00-814-8618 (5-137)

NIIN: 00-814-8618
In stock
NSN: 5331-00-814-8618
FSC Code: 5331
MPN: 5137

5331-01-283-9222 (5-135V747-75)

NIIN: 01-283-9222
In stock
NSN: 5331-01-283-9222
FSC Code: 5331
MPN: 5135V74775

5331-00-414-7906 (5-135)

NIIN: 00-414-7906
In stock
NSN: 5331-00-414-7906
FSC Code: 5331
MPN: 5135

5331-00-822-0081 (5-135)

NIIN: 00-822-0081
In stock
NSN: 5331-00-822-0081
FSC Code: 5331
MPN: 5135

5331-01-045-2488 (5-134V747-75)

NIIN: 01-045-2488
In stock
NSN: 5331-01-045-2488
FSC Code: 5331
MPN: 5134V74775