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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.

5331-01-341-6487 (751198-23)

NIIN: 01-341-6487
In stock
NSN: 5331-01-341-6487
FSC Code: 5331
MPN: 75119823

5331-01-444-6130 (751143-007)

NIIN: 01-444-6130
In stock
NSN: 5331-01-444-6130
FSC Code: 5331
MPN: 751143007

5331-01-444-0287 (751146-005)

NIIN: 01-444-0287
In stock
NSN: 5331-01-444-0287
FSC Code: 5331
MPN: 751146005

5331-01-444-0286 (751149-004)

NIIN: 01-444-0286
In stock
NSN: 5331-01-444-0286
FSC Code: 5331
MPN: 751149004

5331-01-444-0290 (751146-011)

NIIN: 01-444-0290
In stock
NSN: 5331-01-444-0290
FSC Code: 5331
MPN: 751146011

5331-01-397-5134 (M83485/1-141)

NIIN: 01-397-5134
In stock
NSN: 5331-01-397-5134
FSC Code: 5331
MPN: M834851141

5331-00-779-0632 (G557-2-14)

NIIN: 00-779-0632
In stock
NSN: 5331-00-779-0632
FSC Code: 5331
MPN: G557214

5331-01-475-6304 (7504201AA)

NIIN: 01-475-6304
In stock
NSN: 5331-01-475-6304
FSC Code: 5331
MPN: 7504201AA

5331-01-475-6334 (7504201AB)

NIIN: 01-475-6334
In stock
NSN: 5331-01-475-6334
FSC Code: 5331
MPN: 7504201AB

5331-01-497-8487 (7504201AA)

NIIN: 01-497-8487
In stock
NSN: 5331-01-497-8487
FSC Code: 5331
MPN: 7504201AA

5331-01-475-6342 (7504201AF)

NIIN: 01-475-6342
In stock
NSN: 5331-01-475-6342
FSC Code: 5331
MPN: 7504201AF

5331-99-446-4975 (ACR4.160-180/ZW/SO)

NIIN: 99-446-4975
In stock
NSN: 5331-99-446-4975
FSC Code: 5331
MPN: ACR4160180ZWSO

5331-01-482-1056 (75026N1)

NIIN: 01-482-1056
In stock
NSN: 5331-01-482-1056
FSC Code: 5331
MPN: 75026N1

5331-01-482-1060 (75025N1)

NIIN: 01-482-1060
In stock
NSN: 5331-01-482-1060
FSC Code: 5331
MPN: 75025N1

5331-01-444-0277 (750149-004)

NIIN: 01-444-0277
In stock
NSN: 5331-01-444-0277
FSC Code: 5331
MPN: 750149004

5331-01-444-0279 (750106-002)

NIIN: 01-444-0279
In stock
NSN: 5331-01-444-0279
FSC Code: 5331
MPN: 750106002

5331-01-444-0282 (750106-004)

NIIN: 01-444-0282
In stock
NSN: 5331-01-444-0282
FSC Code: 5331
MPN: 750106004

5331-00-482-4452 (G51-15)

NIIN: 00-482-4452
In stock
NSN: 5331-00-482-4452
FSC Code: 5331
MPN: G5115

5331-01-226-1831 (G-5)

NIIN: 01-226-1831
In stock
NSN: 5331-01-226-1831
FSC Code: 5331
MPN: G5

5331-01-333-5195 (G-4800-6)

NIIN: 01-333-5195
In stock
NSN: 5331-01-333-5195
FSC Code: 5331
MPN: G48006

5331-00-582-3938 (G474-4)

NIIN: 00-582-3938
In stock
NSN: 5331-00-582-3938
FSC Code: 5331
MPN: G4744

5331-00-584-1329 (G474-6)

NIIN: 00-584-1329
In stock
NSN: 5331-00-584-1329
FSC Code: 5331
MPN: G4746

5331-00-584-1330 (G474-8)

NIIN: 00-584-1330
In stock
NSN: 5331-00-584-1330
FSC Code: 5331
MPN: G4748

5331-00-584-1327 (G474-5)

NIIN: 00-584-1327
In stock
NSN: 5331-00-584-1327
FSC Code: 5331
MPN: G4745

5331-00-111-8706 (G46888)

NIIN: 00-111-8706
In stock
NSN: 5331-00-111-8706
FSC Code: 5331
MPN: G46888

5331-01-186-7532 (G44264)

NIIN: 01-186-7532
In stock
NSN: 5331-01-186-7532
FSC Code: 5331
MPN: G44264

5331-00-587-7780 (G4285R5-D)

NIIN: 00-587-7780
In stock
NSN: 5331-00-587-7780
FSC Code: 5331
MPN: G4285R5D

5331-00-192-0443 (G41525)

NIIN: 00-192-0443
In stock
NSN: 5331-00-192-0443
FSC Code: 5331
MPN: G41525

5331-00-192-0442 (G41062)

NIIN: 00-192-0442
In stock
NSN: 5331-00-192-0442
FSC Code: 5331
MPN: G41062

5331-00-192-0441 (G41033)

NIIN: 00-192-0441
In stock
NSN: 5331-00-192-0441
FSC Code: 5331
MPN: G41033

5331-00-192-0440 (G41029)

NIIN: 00-192-0440
In stock
NSN: 5331-00-192-0440
FSC Code: 5331
MPN: G41029

5331-00-192-0439 (G41028)

NIIN: 00-192-0439
In stock
NSN: 5331-00-192-0439
FSC Code: 5331
MPN: G41028

5331-00-022-7115 (G4057R5-16)

NIIN: 00-022-7115
In stock
NSN: 5331-00-022-7115
FSC Code: 5331
MPN: G4057R516

5331-01-518-6555 (74B-010957-014)

NIIN: 01-518-6555
In stock
NSN: 5331-01-518-6555
FSC Code: 5331
MPN: 74B010957014

5331-01-518-6557 (74B-010957-162)

NIIN: 01-518-6557
In stock
NSN: 5331-01-518-6557
FSC Code: 5331
MPN: 74B010957162

5331-01-183-5659 (G375-B-218-SUA)

NIIN: 01-183-5659
In stock
NSN: 5331-01-183-5659
FSC Code: 5331
MPN: G375B218SUA

5331-01-292-5579 (G-375-B-117-QTA)

NIIN: 01-292-5579
In stock
NSN: 5331-01-292-5579
FSC Code: 5331
MPN: G375B117QTA

5331-01-230-3409 (G-375-B-010)

NIIN: 01-230-3409
In stock
NSN: 5331-01-230-3409
FSC Code: 5331
MPN: G375B010

5331-01-292-5581 (G-375-B-115-QTA)

NIIN: 01-292-5581
In stock
NSN: 5331-01-292-5581
FSC Code: 5331
MPN: G375B115QTA

5331-01-230-2450 (G-375-B-111-QTA)

NIIN: 01-230-2450
In stock
NSN: 5331-01-230-2450
FSC Code: 5331
MPN: G375B111QTA

5331-01-482-1055 (74948N1)

NIIN: 01-482-1055
In stock
NSN: 5331-01-482-1055
FSC Code: 5331
MPN: 74948N1

5331-01-510-3521 (748IDX.036CS)

NIIN: 01-510-3521
In stock
NSN: 5331-01-510-3521
FSC Code: 5331
MPN: 748IDX036CS

5331-01-225-0799 (G-3647-55)

NIIN: 01-225-0799
In stock
NSN: 5331-01-225-0799
FSC Code: 5331
MPN: G364755

5331-01-251-2874 (G-3423)

NIIN: 01-251-2874
In stock
NSN: 5331-01-251-2874
FSC Code: 5331
MPN: G3423

5331-01-535-6409 (747-0142-05)

NIIN: 01-535-6409
In stock
NSN: 5331-01-535-6409
FSC Code: 5331
MPN: 747014205

5331-00-258-7478 (G335485)

NIIN: 00-258-7478
In stock
NSN: 5331-00-258-7478
FSC Code: 5331
MPN: G335485

5331-00-949-6145 (G325)

NIIN: 00-949-6145
In stock
NSN: 5331-00-949-6145
FSC Code: 5331
MPN: G325

5331-01-312-9918 (G32356)

NIIN: 01-312-9918
In stock
NSN: 5331-01-312-9918
FSC Code: 5331
MPN: G32356