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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.

5331-01-426-3132 (NB39802672)

NIIN: 01-426-3132
In stock
NSN: 5331-01-426-3132
FSC Code: 5331
MPN: NB39802672

5331-01-431-7374 (N-585-F)

NIIN: 01-431-7374
In stock
NSN: 5331-01-431-7374
FSC Code: 5331
MPN: N585F

5331-01-411-9062 (N5740493)

NIIN: 01-411-9062
In stock
NSN: 5331-01-411-9062
FSC Code: 5331
MPN: N5740493

5331-01-459-9843 (NB398214-71)

NIIN: 01-459-9843
In stock
NSN: 5331-01-459-9843
FSC Code: 5331
MPN: NB39821471

5331-01-571-9124 (N4A0371)

NIIN: 01-571-9124
In stock
NSN: 5331-01-571-9124
FSC Code: 5331
MPN: N4A0371

5331-01-420-1530 (N3731-090)

NIIN: 01-420-1530
In stock
NSN: 5331-01-420-1530
FSC Code: 5331
MPN: N3731090

5331-01-420-1537 (N3489-090)

NIIN: 01-420-1537
In stock
NSN: 5331-01-420-1537
FSC Code: 5331
MPN: N3489090

5331-01-509-0405 (N33904G)

NIIN: 01-509-0405
In stock
NSN: 5331-01-509-0405
FSC Code: 5331
MPN: N33904G

5331-01-424-8197 (N32160G)

NIIN: 01-424-8197
In stock
NSN: 5331-01-424-8197
FSC Code: 5331
MPN: N32160G

5331-01-570-4762 (N32247)

NIIN: 01-570-4762
In stock
NSN: 5331-01-570-4762
FSC Code: 5331
MPN: N32247

5331-01-424-8193 (N32246)

NIIN: 01-424-8193
In stock
NSN: 5331-01-424-8193
FSC Code: 5331
MPN: N32246

5331-01-517-0581 (N-3040-7)

NIIN: 01-517-0581
In stock
NSN: 5331-01-517-0581
FSC Code: 5331
MPN: N30407

5331-01-372-3874 (N25-97)

NIIN: 01-372-3874
In stock
NSN: 5331-01-372-3874
FSC Code: 5331
MPN: N2597

5331-01-372-3873 (N25-92)

NIIN: 01-372-3873
In stock
NSN: 5331-01-372-3873
FSC Code: 5331
MPN: N2592

5331-01-368-3631 (N2621)

NIIN: 01-368-3631
In stock
NSN: 5331-01-368-3631
FSC Code: 5331
MPN: N2621

5331-01-557-1907 (N25327)

NIIN: 01-557-1907
In stock
NSN: 5331-01-557-1907
FSC Code: 5331
MPN: N25327

5331-01-420-1535 (N2485-090)

NIIN: 01-420-1535
In stock
NSN: 5331-01-420-1535
FSC Code: 5331
MPN: N2485090

5331-01-487-4831 (N2-385N602-70)

NIIN: 01-487-4831
In stock
NSN: 5331-01-487-4831
FSC Code: 5331
MPN: N2385N60270

5331-01-423-7249 (N19948-94)

NIIN: 01-423-7249
In stock
NSN: 5331-01-423-7249
FSC Code: 5331
MPN: N1994894

5331-99-608-0712 (N178376-2)

NIIN: 99-608-0712
In stock
NSN: 5331-99-608-0712
FSC Code: 5331
MPN: N1783762

5331-01-442-9750 (N173161301)

NIIN: 01-442-9750
In stock
NSN: 5331-01-442-9750
FSC Code: 5331
MPN: N173161301

5331-01-503-8249 (N17713)

NIIN: 01-503-8249
In stock
NSN: 5331-01-503-8249
FSC Code: 5331
MPN: N17713

5331-17-109-6563 (N16-8-1)

NIIN: 17-109-6563
In stock
NSN: 5331-17-109-6563
FSC Code: 5331
MPN: N1681

5331-01-368-3630 (N15106)

NIIN: 01-368-3630
In stock
NSN: 5331-01-368-3630
FSC Code: 5331
MPN: N15106

5331-01-368-3878 (N15039)

NIIN: 01-368-3878
In stock
NSN: 5331-01-368-3878
FSC Code: 5331
MPN: N15039

5331-01-571-9595 (N131838)

NIIN: 01-571-9595
In stock
NSN: 5331-01-571-9595
FSC Code: 5331
MPN: N131838

5331-01-566-0416 (N1206)

NIIN: 01-566-0416
In stock
NSN: 5331-01-566-0416
FSC Code: 5331
MPN: N1206

5331-01-557-7079 (N-11728-WS)

NIIN: 01-557-7079
In stock
NSN: 5331-01-557-7079
FSC Code: 5331
MPN: N11728WS

5331-01-556-4235 (N-11728-WR)

NIIN: 01-556-4235
In stock
NSN: 5331-01-556-4235
FSC Code: 5331
MPN: N11728WR

5331-01-398-0717 (N-11728-TT)

NIIN: 01-398-0717
In stock
NSN: 5331-01-398-0717
FSC Code: 5331
MPN: N11728TT

5331-01-383-0869 (N-11728-N)

NIIN: 01-383-0869
In stock
NSN: 5331-01-383-0869
FSC Code: 5331
MPN: N11728N

5331-01-398-0721 (N-4301-CAITEM9)

NIIN: 01-398-0721
In stock
NSN: 5331-01-398-0721
FSC Code: 5331
MPN: N4301CAITEM9

5331-01-451-9667 (N-11728-WL)

NIIN: 01-451-9667
In stock
NSN: 5331-01-451-9667
FSC Code: 5331
MPN: N11728WL

5331-01-411-2494 (N-11728-TV)

NIIN: 01-411-2494
In stock
NSN: 5331-01-411-2494
FSC Code: 5331
MPN: N11728TV

5331-01-364-1403 (N11681)

NIIN: 01-364-1403
In stock
NSN: 5331-01-364-1403
FSC Code: 5331
MPN: N11681

5331-01-398-0715 (N-11728-CQ)

NIIN: 01-398-0715
In stock
NSN: 5331-01-398-0715
FSC Code: 5331
MPN: N11728CQ

5331-01-502-9302 (N1090)

NIIN: 01-502-9302
In stock
NSN: 5331-01-502-9302
FSC Code: 5331
MPN: N1090

5331-01-460-5431 (N07091)

NIIN: 01-460-5431
In stock
NSN: 5331-01-460-5431
FSC Code: 5331
MPN: N07091

5331-01-503-8237 (N04785)

NIIN: 01-503-8237
In stock
NSN: 5331-01-503-8237
FSC Code: 5331
MPN: N04785

5331-01-503-8248 (N04948)

NIIN: 01-503-8248
In stock
NSN: 5331-01-503-8248
FSC Code: 5331
MPN: N04948

5331-01-562-1195 (N0674-70)

NIIN: 01-562-1195
In stock
NSN: 5331-01-562-1195
FSC Code: 5331
MPN: N067470

5331-01-450-5850 (N0706-18585-160)

NIIN: 01-450-5850
In stock
NSN: 5331-01-450-5850
FSC Code: 5331
MPN: N070618585160

5331-01-466-7497 (N04882)

NIIN: 01-466-7497
In stock
NSN: 5331-01-466-7497
FSC Code: 5331
MPN: N04882

5331-01-542-0852 (N04731)

NIIN: 01-542-0852
In stock
NSN: 5331-01-542-0852
FSC Code: 5331
MPN: N04731

5331-01-522-6765 (N02720)

NIIN: 01-522-6765
In stock
NSN: 5331-01-522-6765
FSC Code: 5331
MPN: N02720

5331-01-503-8234 (N04784)

NIIN: 01-503-8234
In stock
NSN: 5331-01-503-8234
FSC Code: 5331
MPN: N04784

5331-01-461-1631 (N04736)

NIIN: 01-461-1631
In stock
NSN: 5331-01-461-1631
FSC Code: 5331
MPN: N04736

5331-01-460-5435 (N04735)

NIIN: 01-460-5435
In stock
NSN: 5331-01-460-5435
FSC Code: 5331
MPN: N04735