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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.

5331-00-006-2414 (651316-21)

NIIN: 00-006-2414
In stock
NSN: 5331-00-006-2414
FSC Code: 5331
MPN: 65131621

5331-00-703-7331 (651345-17)

NIIN: 00-703-7331
In stock
NSN: 5331-00-703-7331
FSC Code: 5331
MPN: 65134517

5331-00-720-3198 (651316-23)

NIIN: 00-720-3198
In stock
NSN: 5331-00-720-3198
FSC Code: 5331
MPN: 65131623

5331-00-684-5458 (651316-19)

NIIN: 00-684-5458
In stock
NSN: 5331-00-684-5458
FSC Code: 5331
MPN: 65131619

5331-00-618-0682 (651316-6)

NIIN: 00-618-0682
In stock
NSN: 5331-00-618-0682
FSC Code: 5331
MPN: 6513166

5331-00-580-4566 (651316-15)

NIIN: 00-580-4566
In stock
NSN: 5331-00-580-4566
FSC Code: 5331
MPN: 65131615

5331-00-684-8058 (651316-13)

NIIN: 00-684-8058
In stock
NSN: 5331-00-684-8058
FSC Code: 5331
MPN: 65131613

5331-00-684-5378 (651316-14)

NIIN: 00-684-5378
In stock
NSN: 5331-00-684-5378
FSC Code: 5331
MPN: 65131614

5331-01-540-5224 (27-143)

NIIN: 01-540-5224
In stock
NSN: 5331-01-540-5224
FSC Code: 5331
MPN: 27143

5331-00-684-5386 (651316-11)

NIIN: 00-684-5386
In stock
NSN: 5331-00-684-5386
FSC Code: 5331
MPN: 65131611

5331-00-684-5387 (651316-12)

NIIN: 00-684-5387
In stock
NSN: 5331-00-684-5387
FSC Code: 5331
MPN: 65131612

5331-00-684-5381 (651316-1)

NIIN: 00-684-5381
In stock
NSN: 5331-00-684-5381
FSC Code: 5331
MPN: 6513161

5331-01-288-7704 (65119-125-915)

NIIN: 01-288-7704
In stock
NSN: 5331-01-288-7704
FSC Code: 5331
MPN: 65119125915

5331-01-292-1163 (65118-134-910)

NIIN: 01-292-1163
In stock
NSN: 5331-01-292-1163
FSC Code: 5331
MPN: 65118134910

5331-01-292-1166 (65119-130-910)

NIIN: 01-292-1166
In stock
NSN: 5331-01-292-1166
FSC Code: 5331
MPN: 65119130910

5331-01-231-3179 (65119-0334)

NIIN: 01-231-3179
In stock
NSN: 5331-01-231-3179
FSC Code: 5331
MPN: 651190334

5331-00-421-9717 (65119-134-915)

NIIN: 00-421-9717
In stock
NSN: 5331-00-421-9717
FSC Code: 5331
MPN: 65119134915

5331-01-292-1161 (65118-129-910)

NIIN: 01-292-1161
In stock
NSN: 5331-01-292-1161
FSC Code: 5331
MPN: 65118129910

5331-01-296-6444 (65118-232-910)

NIIN: 01-296-6444
In stock
NSN: 5331-01-296-6444
FSC Code: 5331
MPN: 65118232910

5331-01-292-1168 (65118-139-910)

NIIN: 01-292-1168
In stock
NSN: 5331-01-292-1168
FSC Code: 5331
MPN: 65118139910

5331-01-292-1157 (65118-130-910)

NIIN: 01-292-1157
In stock
NSN: 5331-01-292-1157
FSC Code: 5331
MPN: 65118130910

5331-01-292-8314 (65118-023-993)

NIIN: 01-292-8314
In stock
NSN: 5331-01-292-8314
FSC Code: 5331
MPN: 65118023993

5331-01-328-4150 (65118-125-910)

NIIN: 01-328-4150
In stock
NSN: 5331-01-328-4150
FSC Code: 5331
MPN: 65118125910

5331-01-292-1155 (65118-022-910)

NIIN: 01-292-1155
In stock
NSN: 5331-01-292-1155
FSC Code: 5331
MPN: 65118022910

5331-01-292-1154 (65118-023-910)

NIIN: 01-292-1154
In stock
NSN: 5331-01-292-1154
FSC Code: 5331
MPN: 65118023910

5331-01-292-1160 (65118-019-910)

NIIN: 01-292-1160
In stock
NSN: 5331-01-292-1160
FSC Code: 5331
MPN: 65118019910

5331-01-155-1779 (65114-019)

NIIN: 01-155-1779
In stock
NSN: 5331-01-155-1779
FSC Code: 5331
MPN: 65114019

5331-01-568-0934 (271-0459)

NIIN: 01-568-0934
In stock
NSN: 5331-01-568-0934
FSC Code: 5331
MPN: 2710459

5331-01-568-0936 (271-0460)

NIIN: 01-568-0936
In stock
NSN: 5331-01-568-0936
FSC Code: 5331
MPN: 2710460

5331-01-371-2423 (2710-001)

NIIN: 01-371-2423
In stock
NSN: 5331-01-371-2423
FSC Code: 5331
MPN: 2710001

5331-01-388-8802 (271-00)

NIIN: 01-388-8802
In stock
NSN: 5331-01-388-8802
FSC Code: 5331
MPN: 27100

5331-01-288-7703 (65103-D-990)

NIIN: 01-288-7703
In stock
NSN: 5331-01-288-7703
FSC Code: 5331
MPN: 65103D990

5331-01-288-5043 (65103-1-990)

NIIN: 01-288-5043
In stock
NSN: 5331-01-288-5043
FSC Code: 5331
MPN: 651031990

5331-00-980-2391 (65102-11108-101)

NIIN: 00-980-2391
In stock
NSN: 5331-00-980-2391
FSC Code: 5331
MPN: 6510211108101

5331-01-413-0272 (270818-1)

NIIN: 01-413-0272
In stock
NSN: 5331-01-413-0272
FSC Code: 5331
MPN: 2708181

5331-01-409-1095 (270767-1)

NIIN: 01-409-1095
In stock
NSN: 5331-01-409-1095
FSC Code: 5331
MPN: 2707671

5331-01-566-8598 (270-1528)

NIIN: 01-566-8598
In stock
NSN: 5331-01-566-8598
FSC Code: 5331
MPN: 2701528

5331-01-568-0935 (270-1540)

NIIN: 01-568-0935
In stock
NSN: 5331-01-568-0935
FSC Code: 5331
MPN: 2701540

5331-00-292-7545 (6505-3105264PC9)

NIIN: 00-292-7545
In stock
NSN: 5331-00-292-7545
FSC Code: 5331
MPN: 65053105264PC9

5331-01-323-1549 (650437-A)

NIIN: 01-323-1549
In stock
NSN: 5331-01-323-1549
FSC Code: 5331
MPN: 650437A

5331-00-893-1233 (65043-308-9)

NIIN: 00-893-1233
In stock
NSN: 5331-00-893-1233
FSC Code: 5331
MPN: 650433089

5331-01-160-4334 (6503-86PIECE307)

NIIN: 01-160-4334
In stock
NSN: 5331-01-160-4334
FSC Code: 5331
MPN: 650386PIECE307

5331-01-160-4332 (6503-86PIECE306)

NIIN: 01-160-4332
In stock
NSN: 5331-01-160-4332
FSC Code: 5331
MPN: 650386PIECE306

5331-99-103-4961 (742-103-4961)

NIIN: 99-103-4961
In stock
NSN: 5331-99-103-4961
FSC Code: 5331
MPN: 7421034961

5331-01-525-0160 (Y00023213)

NIIN: 01-525-0160
In stock
NSN: 5331-01-525-0160
FSC Code: 5331
MPN: Y00023213

5331-00-976-5003 (6500010-045)

NIIN: 00-976-5003
In stock
NSN: 5331-00-976-5003
FSC Code: 5331
MPN: 6500010045

5331-01-563-0731 (269A6032-003)

NIIN: 01-563-0731
In stock
NSN: 5331-01-563-0731
FSC Code: 5331
MPN: 269A6032003

5331-01-472-5012 (NAS1611-128A)

NIIN: 01-472-5012
In stock
NSN: 5331-01-472-5012
FSC Code: 5331
MPN: NAS1611128A