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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.

5331-01-234-1456 (280038-21)

NIIN: 01-234-1456
In stock
NSN: 5331-01-234-1456
FSC Code: 5331
MPN: 28003821

5331-01-181-7894 (28-00065-007)

NIIN: 01-181-7894
In stock
NSN: 5331-01-181-7894
FSC Code: 5331
MPN: 2800065007

5331-00-054-9392 (2-7C147-7)

NIIN: 00-054-9392
In stock
NSN: 5331-00-054-9392
FSC Code: 5331
MPN: 27C1477

5331-01-269-7388 (27A70104)

NIIN: 01-269-7388
In stock
NSN: 5331-01-269-7388
FSC Code: 5331
MPN: 27A70104

5331-01-346-3484 (0926-001)

NIIN: 01-346-3484
In stock
NSN: 5331-01-346-3484
FSC Code: 5331
MPN: 0926001

5331-12-347-0351 (092-45211-0001C)

NIIN: 12-347-0351
In stock
NSN: 5331-12-347-0351
FSC Code: 5331
MPN: 092452110001C

5331-01-440-3274 (091730-4)

NIIN: 01-440-3274
In stock
NSN: 5331-01-440-3274
FSC Code: 5331
MPN: 0917304

5331-01-439-9152 (091730-5)

NIIN: 01-439-9152
In stock
NSN: 5331-01-439-9152
FSC Code: 5331
MPN: 0917305

5331-01-414-3051 (091-585133)

NIIN: 01-414-3051
In stock
NSN: 5331-01-414-3051
FSC Code: 5331
MPN: 091585133

5331-01-441-7206 (091587-19)

NIIN: 01-441-7206
In stock
NSN: 5331-01-441-7206
FSC Code: 5331
MPN: 09158719

5331-01-177-8154 (27918-9901)

NIIN: 01-177-8154
In stock
NSN: 5331-01-177-8154
FSC Code: 5331
MPN: 279189901

5331-01-274-1296 (27-911)

NIIN: 01-274-1296
In stock
NSN: 5331-01-274-1296
FSC Code: 5331
MPN: 27911

5331-01-292-6137 (27-901)

NIIN: 01-292-6137
In stock
NSN: 5331-01-292-6137
FSC Code: 5331
MPN: 27901

5331-01-566-6486 (091-383620)

NIIN: 01-566-6486
In stock
NSN: 5331-01-566-6486
FSC Code: 5331
MPN: 091383620

5331-01-271-8301 (27-893)

NIIN: 01-271-8301
In stock
NSN: 5331-01-271-8301
FSC Code: 5331
MPN: 27893

5331-01-271-8299 (27-894)

NIIN: 01-271-8299
In stock
NSN: 5331-01-271-8299
FSC Code: 5331
MPN: 27894

5331-01-271-8293 (27-890)

NIIN: 01-271-8293
In stock
NSN: 5331-01-271-8293
FSC Code: 5331
MPN: 27890

5331-01-368-9955 (3-904E515-8)

NIIN: 01-368-9955
In stock
NSN: 5331-01-368-9955
FSC Code: 5331
MPN: 3904E5158

5331-01-514-5927 (091181-002)

NIIN: 01-514-5927
In stock
NSN: 5331-01-514-5927
FSC Code: 5331
MPN: 091181002

5331-01-414-3056 (091-157875)

NIIN: 01-414-3056
In stock
NSN: 5331-01-414-3056
FSC Code: 5331
MPN: 091157875

5331-01-271-8294 (27-880)

NIIN: 01-271-8294
In stock
NSN: 5331-01-271-8294
FSC Code: 5331
MPN: 27880

5331-01-512-4260 (091-128066)

NIIN: 01-512-4260
In stock
NSN: 5331-01-512-4260
FSC Code: 5331
MPN: 091128066

5331-01-271-8300 (27-870)

NIIN: 01-271-8300
In stock
NSN: 5331-01-271-8300
FSC Code: 5331
MPN: 27870

5331-01-271-8292 (27-866)

NIIN: 01-271-8292
In stock
NSN: 5331-01-271-8292
FSC Code: 5331
MPN: 27866

5331-01-566-6438 (091-025569)

NIIN: 01-566-6438
In stock
NSN: 5331-01-566-6438
FSC Code: 5331
MPN: 091025569

5331-01-382-0103 (0905-1018)

NIIN: 01-382-0103
In stock
NSN: 5331-01-382-0103
FSC Code: 5331
MPN: 09051018

5331-01-343-4116 (0905-0375)

NIIN: 01-343-4116
In stock
NSN: 5331-01-343-4116
FSC Code: 5331
MPN: 09050375

5331-01-470-4547 (090266-100)

NIIN: 01-470-4547
In stock
NSN: 5331-01-470-4547
FSC Code: 5331
MPN: 090266100

5331-01-461-6142 (090258-100)

NIIN: 01-461-6142
In stock
NSN: 5331-01-461-6142
FSC Code: 5331
MPN: 090258100

5331-01-417-3863 (0902-001A)

NIIN: 01-417-3863
In stock
NSN: 5331-01-417-3863
FSC Code: 5331
MPN: 0902001A

5331-01-566-6488 (090-184672)

NIIN: 01-566-6488
In stock
NSN: 5331-01-566-6488
FSC Code: 5331
MPN: 090184672

5331-01-414-5082 (090-145303)

NIIN: 01-414-5082
In stock
NSN: 5331-01-414-5082
FSC Code: 5331
MPN: 090145303

5331-01-566-6494 (090-148081)

NIIN: 01-566-6494
In stock
NSN: 5331-01-566-6494
FSC Code: 5331
MPN: 090148081

5331-01-353-3468 (09-012/1.5IN/7)

NIIN: 01-353-3468
In stock
NSN: 5331-01-353-3468
FSC Code: 5331
MPN: 0901215IN7

5331-01-566-6483 (090-098559)

NIIN: 01-566-6483
In stock
NSN: 5331-01-566-6483
FSC Code: 5331
MPN: 090098559

5331-01-475-2601 (090-022781)

NIIN: 01-475-2601
In stock
NSN: 5331-01-475-2601
FSC Code: 5331
MPN: 090022781

5331-14-476-2088 (09000D00A3W02C6)

NIIN: 14-476-2088
In stock
NSN: 5331-14-476-2088
FSC Code: 5331
MPN: 09000D00A3W02C6

5331-01-566-6496 (090-014325)

NIIN: 01-566-6496
In stock
NSN: 5331-01-566-6496
FSC Code: 5331
MPN: 090014325

5331-01-385-2655 (09-00137-00)

NIIN: 01-385-2655
In stock
NSN: 5331-01-385-2655
FSC Code: 5331
MPN: 090013700

5331-01-172-1865 (278-140)

NIIN: 01-172-1865
In stock
NSN: 5331-01-172-1865
FSC Code: 5331
MPN: 278140

5331-00-093-7272 (277L145)

NIIN: 00-093-7272
In stock
NSN: 5331-00-093-7272
FSC Code: 5331
MPN: 277L145

5331-01-292-9455 (2776-ND)

NIIN: 01-292-9455
In stock
NSN: 5331-01-292-9455
FSC Code: 5331
MPN: 2776ND

5331-01-176-7920 (27738-52091)

NIIN: 01-176-7920
In stock
NSN: 5331-01-176-7920
FSC Code: 5331
MPN: 2773852091

5331-01-331-1132 (2772/25030)

NIIN: 01-331-1132
In stock
NSN: 5331-01-331-1132
FSC Code: 5331
MPN: 277225030

5331-01-273-4547 (2772/20030)

NIIN: 01-273-4547
In stock
NSN: 5331-01-273-4547
FSC Code: 5331
MPN: 277220030

5331-01-273-6804 (2772/33040)

NIIN: 01-273-6804
In stock
NSN: 5331-01-273-6804
FSC Code: 5331
MPN: 277233040

5331-01-331-1131 (2772/12030)

NIIN: 01-331-1131
In stock
NSN: 5331-01-331-1131
FSC Code: 5331
MPN: 277212030

5331-01-273-6270 (2772/10030)

NIIN: 01-273-6270
In stock
NSN: 5331-01-273-6270
FSC Code: 5331
MPN: 277210030