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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.

5331-00-139-7040 (2-275)

NIIN: 00-139-7040
In stock
NSN: 5331-00-139-7040
FSC Code: 5331
MPN: 2275

5331-00-346-4779 (2275344-0001)

NIIN: 00-346-4779
In stock
NSN: 5331-00-346-4779
FSC Code: 5331
MPN: 22753440001

5331-01-107-3597 (227-53910)

NIIN: 01-107-3597
In stock
NSN: 5331-01-107-3597
FSC Code: 5331
MPN: 22753910

5331-01-171-6303 (22-75622)

NIIN: 01-171-6303
In stock
NSN: 5331-01-171-6303
FSC Code: 5331
MPN: 2275622

5331-01-226-4437 (22-75628)

NIIN: 01-226-4437
In stock
NSN: 5331-01-226-4437
FSC Code: 5331
MPN: 2275628

5331-01-226-4439 (22-75625)

NIIN: 01-226-4439
In stock
NSN: 5331-01-226-4439
FSC Code: 5331
MPN: 2275625

5331-01-217-4037 (2-275B612-70)

NIIN: 01-217-4037
In stock
NSN: 5331-01-217-4037
FSC Code: 5331
MPN: 2275B61270

5331-01-332-9322 (2-276)

NIIN: 01-332-9322
In stock
NSN: 5331-01-332-9322
FSC Code: 5331
MPN: 2276

5331-00-231-3235 (2-276)

NIIN: 00-231-3235
In stock
NSN: 5331-00-231-3235
FSC Code: 5331
MPN: 2276

5331-00-922-4960 (2-275N602-70)

NIIN: 00-922-4960
In stock
NSN: 5331-00-922-4960
FSC Code: 5331
MPN: 2275N60270

5331-01-005-0523 (2-275V0747-75)

NIIN: 01-005-0523
In stock
NSN: 5331-01-005-0523
FSC Code: 5331
MPN: 2275V074775

5331-01-251-1665 (22760R1)

NIIN: 01-251-1665
In stock
NSN: 5331-01-251-1665
FSC Code: 5331
MPN: 22760R1

5331-01-031-1340 (2-276)

NIIN: 01-031-1340
In stock
NSN: 5331-01-031-1340
FSC Code: 5331
MPN: 2276

5331-00-141-4239 (227632PC61)

NIIN: 00-141-4239
In stock
NSN: 5331-00-141-4239
FSC Code: 5331
MPN: 227632PC61

5331-00-599-9609 (2276-117PCN3)

NIIN: 00-599-9609
In stock
NSN: 5331-00-599-9609
FSC Code: 5331
MPN: 2276117PCN3

5331-01-364-4921 (0000-3262)

NIIN: 01-364-4921
In stock
NSN: 5331-01-364-4921
FSC Code: 5331
MPN: 00003262

5331-00-159-9152 (2-276)

NIIN: 00-159-9152
In stock
NSN: 5331-00-159-9152
FSC Code: 5331
MPN: 2276

5331-00-690-4190 (2-27618ITEM3)

NIIN: 00-690-4190
In stock
NSN: 5331-00-690-4190
FSC Code: 5331
MPN: 227618ITEM3

5331-01-269-0209 (2-276-L449-65)

NIIN: 01-269-0209
In stock
NSN: 5331-01-269-0209
FSC Code: 5331
MPN: 2276L44965

5331-00-245-4071 (2-276B612-70)

NIIN: 00-245-4071
In stock
NSN: 5331-00-245-4071
FSC Code: 5331
MPN: 2276B61270

5331-01-020-2316 (227-7507)

NIIN: 01-020-2316
In stock
NSN: 5331-01-020-2316
FSC Code: 5331
MPN: 2277507

5331-01-226-4440 (22-77127)

NIIN: 01-226-4440
In stock
NSN: 5331-01-226-4440
FSC Code: 5331
MPN: 2277127

5331-00-433-8080 (227-7509)

NIIN: 00-433-8080
In stock
NSN: 5331-00-433-8080
FSC Code: 5331
MPN: 2277509

5331-00-935-2025 (2-277-47-071)

NIIN: 00-935-2025
In stock
NSN: 5331-00-935-2025
FSC Code: 5331
MPN: 227747071

5331-00-104-7625 (227-8307)

NIIN: 00-104-7625
In stock
NSN: 5331-00-104-7625
FSC Code: 5331
MPN: 2278307

5331-01-005-0524 (2-277-V747-75)

NIIN: 01-005-0524
In stock
NSN: 5331-01-005-0524
FSC Code: 5331
MPN: 2277V74775

5331-01-125-9038 (2-277N674-70)

NIIN: 01-125-9038
In stock
NSN: 5331-01-125-9038
FSC Code: 5331
MPN: 2277N67470

5331-00-902-0917 (2-278-47-071)

NIIN: 00-902-0917
In stock
NSN: 5331-00-902-0917
FSC Code: 5331
MPN: 227847071

5331-00-402-2629 (2-278C147-7)

NIIN: 00-402-2629
In stock
NSN: 5331-00-402-2629
FSC Code: 5331
MPN: 2278C1477

5331-01-005-0525 (2-278V0747-75)

NIIN: 01-005-0525
In stock
NSN: 5331-01-005-0525
FSC Code: 5331
MPN: 2278V074775

5331-00-782-1045 (2-278-C873-70)

NIIN: 00-782-1045
In stock
NSN: 5331-00-782-1045
FSC Code: 5331
MPN: 2278C87370

5331-01-031-8235 (2-279)

NIIN: 01-031-8235
In stock
NSN: 5331-01-031-8235
FSC Code: 5331
MPN: 2279

5331-01-006-5471 (2-278N304-75)

NIIN: 01-006-5471
In stock
NSN: 5331-01-006-5471
FSC Code: 5331
MPN: 2278N30475

5331-00-965-0662 (2-279)

NIIN: 00-965-0662
In stock
NSN: 5331-00-965-0662
FSC Code: 5331
MPN: 2279

5331-01-382-2627 (0004-1975-750)

NIIN: 01-382-2627
In stock
NSN: 5331-01-382-2627
FSC Code: 5331
MPN: 00041975750

5331-01-128-5183 (2-279N103-70)

NIIN: 01-128-5183
In stock
NSN: 5331-01-128-5183
FSC Code: 5331
MPN: 2279N10370

5331-00-720-3360 (2-279)

NIIN: 00-720-3360
In stock
NSN: 5331-00-720-3360
FSC Code: 5331
MPN: 2279

5331-01-164-7433 (2-279L1223-60)

NIIN: 01-164-7433
In stock
NSN: 5331-01-164-7433
FSC Code: 5331
MPN: 2279L122360

5331-00-167-5154 (2-279V0747-75)

NIIN: 00-167-5154
In stock
NSN: 5331-00-167-5154
FSC Code: 5331
MPN: 2279V074775

5331-00-999-8364 (2-279N951-75)

NIIN: 00-999-8364
In stock
NSN: 5331-00-999-8364
FSC Code: 5331
MPN: 2279N95175

5331-00-882-0656 (227L-145)

NIIN: 00-882-0656
In stock
NSN: 5331-00-882-0656
FSC Code: 5331
MPN: 227L145

5331-01-031-8225 (2-280)

NIIN: 01-031-8225
In stock
NSN: 5331-01-031-8225
FSC Code: 5331
MPN: 2280

5331-00-923-5198 (2-280B612-7)

NIIN: 00-923-5198
In stock
NSN: 5331-00-923-5198
FSC Code: 5331
MPN: 2280B6127

5331-01-120-0683 (2-280-N219-7)

NIIN: 01-120-0683
In stock
NSN: 5331-01-120-0683
FSC Code: 5331
MPN: 2280N2197

5331-01-139-1944 (2-280L1223-60)

NIIN: 01-139-1944
In stock
NSN: 5331-01-139-1944
FSC Code: 5331
MPN: 2280L122360

5331-00-167-5155 (2-280V0747-75)

NIIN: 00-167-5155
In stock
NSN: 5331-00-167-5155
FSC Code: 5331
MPN: 2280V074775

5331-00-720-2536 (2-281)

NIIN: 00-720-2536
In stock
NSN: 5331-00-720-2536
FSC Code: 5331
MPN: 2281

5331-01-513-8707 (00-067500-00019)

NIIN: 01-513-8707
In stock
NSN: 5331-01-513-8707
FSC Code: 5331
MPN: 0006750000019