Skip to content

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.

5331-00-291-3073 (00590A)

NIIN: 00-291-3073
In stock
NSN: 5331-00-291-3073
FSC Code: 5331
MPN: 00590A

5331-01-311-7875 (0058982)

NIIN: 01-311-7875
In stock
NSN: 5331-01-311-7875
FSC Code: 5331
MPN: 0058982

5331-00-251-9369 (00594C)

NIIN: 00-251-9369
In stock
NSN: 5331-00-251-9369
FSC Code: 5331
MPN: 00594C

5331-01-263-8519 (0059970048)

NIIN: 01-263-8519
In stock
NSN: 5331-01-263-8519
FSC Code: 5331
MPN: 0059970048

5331-01-299-3139 (0059970382)

NIIN: 01-299-3139
In stock
NSN: 5331-01-299-3139
FSC Code: 5331
MPN: 0059970382

5331-01-241-4031 (0059971145)

NIIN: 01-241-4031
In stock
NSN: 5331-01-241-4031
FSC Code: 5331
MPN: 0059971145

5331-01-022-1316 (0059972745)

NIIN: 01-022-1316
In stock
NSN: 5331-01-022-1316
FSC Code: 5331
MPN: 0059972745

5331-01-022-1321 (0059972945)

NIIN: 01-022-1321
In stock
NSN: 5331-01-022-1321
FSC Code: 5331
MPN: 0059972945

5331-01-022-1329 (0059973045)

NIIN: 01-022-1329
In stock
NSN: 5331-01-022-1329
FSC Code: 5331
MPN: 0059973045

5331-01-172-4649 (0059975245)

NIIN: 01-172-4649
In stock
NSN: 5331-01-172-4649
FSC Code: 5331
MPN: 0059975245

5331-01-301-4988 (0059978148)

NIIN: 01-301-4988
In stock
NSN: 5331-01-301-4988
FSC Code: 5331
MPN: 0059978148

5331-01-301-4987 (0059977040)

NIIN: 01-301-4987
In stock
NSN: 5331-01-301-4987
FSC Code: 5331
MPN: 0059977040

5331-01-301-4984 (0059977748)

NIIN: 01-301-4984
In stock
NSN: 5331-01-301-4984
FSC Code: 5331
MPN: 0059977748

5331-01-301-4993 (0059978548)

NIIN: 01-301-4993
In stock
NSN: 5331-01-301-4993
FSC Code: 5331
MPN: 0059978548

5331-01-301-4989 (0059977048)

NIIN: 01-301-4989
In stock
NSN: 5331-01-301-4989
FSC Code: 5331
MPN: 0059977048

5331-01-301-4990 (0059978648)

NIIN: 01-301-4990
In stock
NSN: 5331-01-301-4990
FSC Code: 5331
MPN: 0059978648

5331-01-301-5006 (0059979148)

NIIN: 01-301-5006
In stock
NSN: 5331-01-301-5006
FSC Code: 5331
MPN: 0059979148

5331-01-301-4992 (0059978448)

NIIN: 01-301-4992
In stock
NSN: 5331-01-301-4992
FSC Code: 5331
MPN: 0059978448

5331-01-301-4994 (0059978748)

NIIN: 01-301-4994
In stock
NSN: 5331-01-301-4994
FSC Code: 5331
MPN: 0059978748

5331-01-004-0332 (006)

NIIN: 01-004-0332
In stock
NSN: 5331-01-004-0332
FSC Code: 5331
MPN: 006

5331-01-270-0942 (00601566)

NIIN: 01-270-0942
In stock
NSN: 5331-01-270-0942
FSC Code: 5331
MPN: 00601566

5331-00-969-2032 (006-0216-53)

NIIN: 00-969-2032
In stock
NSN: 5331-00-969-2032
FSC Code: 5331
MPN: 006021653

5331-00-184-7394 (006-11055)

NIIN: 00-184-7394
In stock
NSN: 5331-00-184-7394
FSC Code: 5331
MPN: 00611055

5331-00-480-9773 (006-11507)

NIIN: 00-480-9773
In stock
NSN: 5331-00-480-9773
FSC Code: 5331
MPN: 00611507

5331-00-184-7399 (006-11306)

NIIN: 00-184-7399
In stock
NSN: 5331-00-184-7399
FSC Code: 5331
MPN: 00611306

5331-00-559-6514 (006-11647)

NIIN: 00-559-6514
In stock
NSN: 5331-00-559-6514
FSC Code: 5331
MPN: 00611647

5331-01-129-2003 (006-11646)

NIIN: 01-129-2003
In stock
NSN: 5331-01-129-2003
FSC Code: 5331
MPN: 00611646

5331-01-188-9422 (006-17107)

NIIN: 01-188-9422
In stock
NSN: 5331-01-188-9422
FSC Code: 5331
MPN: 00617107

5331-00-166-0963 (006-17107)

NIIN: 00-166-0963
In stock
NSN: 5331-00-166-0963
FSC Code: 5331
MPN: 00617107

5331-00-531-5287 (006-2336)

NIIN: 00-531-5287
In stock
NSN: 5331-00-531-5287
FSC Code: 5331
MPN: 0062336

5331-00-291-3275 (00620F)

NIIN: 00-291-3275
In stock
NSN: 5331-00-291-3275
FSC Code: 5331
MPN: 00620F

5331-01-213-9816 (00621)

NIIN: 01-213-9816
In stock
NSN: 5331-01-213-9816
FSC Code: 5331
MPN: 00621

5331-00-808-0794 (0062249)

NIIN: 00-808-0794
In stock
NSN: 5331-00-808-0794
FSC Code: 5331
MPN: 0062249

5331-00-913-1172 (006-283)

NIIN: 00-913-1172
In stock
NSN: 5331-00-913-1172
FSC Code: 5331
MPN: 006283

5331-00-265-1087 (00635D)

NIIN: 00-265-1087
In stock
NSN: 5331-00-265-1087
FSC Code: 5331
MPN: 00635D

5331-01-286-7802 (00636-0002)

NIIN: 01-286-7802
In stock
NSN: 5331-01-286-7802
FSC Code: 5331
MPN: 006360002

5331-00-472-2888 (00634000000)

NIIN: 00-472-2888
In stock
NSN: 5331-00-472-2888
FSC Code: 5331
MPN: 00634000000

5331-00-252-6051 (00639F)

NIIN: 00-252-6051
In stock
NSN: 5331-00-252-6051
FSC Code: 5331
MPN: 00639F

5331-01-278-1744 (006416)

NIIN: 01-278-1744
In stock
NSN: 5331-01-278-1744
FSC Code: 5331
MPN: 006416

5331-00-298-9984 (00643H)

NIIN: 00-298-9984
In stock
NSN: 5331-00-298-9984
FSC Code: 5331
MPN: 00643H

5331-01-145-0713 (00647J)

NIIN: 01-145-0713
In stock
NSN: 5331-01-145-0713
FSC Code: 5331
MPN: 00647J

5331-01-031-8243 (0065210.26.63)

NIIN: 01-031-8243
In stock
NSN: 5331-01-031-8243
FSC Code: 5331
MPN: 00652102663

5331-00-406-0883 (0065216.35.63)

NIIN: 00-406-0883
In stock
NSN: 5331-00-406-0883
FSC Code: 5331
MPN: 00652163563

5331-00-774-6894 (0065221-35-63)

NIIN: 00-774-6894
In stock
NSN: 5331-00-774-6894
FSC Code: 5331
MPN: 00652213563

5331-01-278-9495 (0065224.35.68)

NIIN: 01-278-9495
In stock
NSN: 5331-01-278-9495
FSC Code: 5331
MPN: 00652243568

5331-00-131-7062 (0065212.26.63)

NIIN: 00-131-7062
In stock
NSN: 5331-00-131-7062
FSC Code: 5331
MPN: 00652122663

5331-01-280-7503 (0065218.35.63)

NIIN: 01-280-7503
In stock
NSN: 5331-01-280-7503
FSC Code: 5331
MPN: 00652183563

5331-01-279-1174 (0065230.53.63)

NIIN: 01-279-1174
In stock
NSN: 5331-01-279-1174
FSC Code: 5331
MPN: 00652305363