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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.

5331-00-599-2680 (AN6225B28)

NIIN: 00-599-2680
In stock
NSN: 5331-00-599-2680
FSC Code: 5331
MPN: AN6225B28

5331-01-272-0699 (AN-6.0-125F-B-B)

NIIN: 01-272-0699
In stock
NSN: 5331-01-272-0699
FSC Code: 5331
MPN: AN60125FBB

5331-01-268-2685 (AN-6.0-125F-B-B)

NIIN: 01-268-2685
In stock
NSN: 5331-01-268-2685
FSC Code: 5331
MPN: AN60125FBB

5331-01-324-4830 (AN55D-22)

NIIN: 01-324-4830
In stock
NSN: 5331-01-324-4830
FSC Code: 5331
MPN: AN55D22

5331-01-324-8835 (AN55D-22)

NIIN: 01-324-8835
In stock
NSN: 5331-01-324-8835
FSC Code: 5331
MPN: AN55D22

5331-01-305-6011 (AN-4.0-125FB-B)

NIIN: 01-305-6011
In stock
NSN: 5331-01-305-6011
FSC Code: 5331
MPN: AN40125FBB

5331-01-305-0667 (AN-4.0-125F-B-B)

NIIN: 01-305-0667
In stock
NSN: 5331-01-305-0667
FSC Code: 5331
MPN: AN40125FBB

5331-01-306-5944 (AN-2.5-125F-B-B)

NIIN: 01-306-5944
In stock
NSN: 5331-01-306-5944
FSC Code: 5331
MPN: AN25125FBB

5331-01-269-6306 (AN-2.0-125F-CS-F)

NIIN: 01-269-6306
In stock
NSN: 5331-01-269-6306
FSC Code: 5331
MPN: AN20125FCSF

5331-01-266-8473 (AN-2.0-125F-CS-F)

NIIN: 01-266-8473
In stock
NSN: 5331-01-266-8473
FSC Code: 5331
MPN: AN20125FCSF

5331-00-291-7376 (AN124030)

NIIN: 00-291-7376
In stock
NSN: 5331-00-291-7376
FSC Code: 5331
MPN: AN124030

5331-00-291-7355 (AN124034)

NIIN: 00-291-7355
In stock
NSN: 5331-00-291-7355
FSC Code: 5331
MPN: AN124034

5331-00-291-3293 (AN12410)

NIIN: 00-291-3293
In stock
NSN: 5331-00-291-3293
FSC Code: 5331
MPN: AN12410

5331-00-291-7356 (AN124033)

NIIN: 00-291-7356
In stock
NSN: 5331-00-291-7356
FSC Code: 5331
MPN: AN124033

5331-00-291-7374 (AN124028)

NIIN: 00-291-7374
In stock
NSN: 5331-00-291-7374
FSC Code: 5331
MPN: AN124028

5331-00-291-7375 (AN124032)

NIIN: 00-291-7375
In stock
NSN: 5331-00-291-7375
FSC Code: 5331
MPN: AN124032

5331-00-291-7370 (AN124024)

NIIN: 00-291-7370
In stock
NSN: 5331-00-291-7370
FSC Code: 5331
MPN: AN124024

5331-00-291-7369 (AN124025)

NIIN: 00-291-7369
In stock
NSN: 5331-00-291-7369
FSC Code: 5331
MPN: AN124025

5331-00-291-7381 (AN124021)

NIIN: 00-291-7381
In stock
NSN: 5331-00-291-7381
FSC Code: 5331
MPN: AN124021

5331-00-291-3294 (AN124011)

NIIN: 00-291-3294
In stock
NSN: 5331-00-291-3294
FSC Code: 5331
MPN: AN124011

5331-00-285-9776 (AN124013)

NIIN: 00-285-9776
In stock
NSN: 5331-00-285-9776
FSC Code: 5331
MPN: AN124013

5331-00-530-3499 (AN124005)

NIIN: 00-530-3499
In stock
NSN: 5331-00-530-3499
FSC Code: 5331
MPN: AN124005

5331-00-291-7367 (AN124023)

NIIN: 00-291-7367
In stock
NSN: 5331-00-291-7367
FSC Code: 5331
MPN: AN124023

5331-00-285-9780 (AN124006)

NIIN: 00-285-9780
In stock
NSN: 5331-00-285-9780
FSC Code: 5331
MPN: AN124006

5331-00-291-7382 (AN124020)

NIIN: 00-291-7382
In stock
NSN: 5331-00-291-7382
FSC Code: 5331
MPN: AN124020

5331-00-285-9773 (AN124003)

NIIN: 00-285-9773
In stock
NSN: 5331-00-285-9773
FSC Code: 5331
MPN: AN124003

5331-00-285-9782 (AN124001)

NIIN: 00-285-9782
In stock
NSN: 5331-00-285-9782
FSC Code: 5331
MPN: AN124001

5331-00-291-7343 (AN123995)

NIIN: 00-291-7343
In stock
NSN: 5331-00-291-7343
FSC Code: 5331
MPN: AN123995

5331-00-285-9769 (AN123989)

NIIN: 00-285-9769
In stock
NSN: 5331-00-285-9769
FSC Code: 5331
MPN: AN123989

5331-00-291-7360 (AN123985)

NIIN: 00-291-7360
In stock
NSN: 5331-00-291-7360
FSC Code: 5331
MPN: AN123985

5331-00-291-7344 (AN123994)

NIIN: 00-291-7344
In stock
NSN: 5331-00-291-7344
FSC Code: 5331
MPN: AN123994

5331-00-285-9771 (AN123987)

NIIN: 00-285-9771
In stock
NSN: 5331-00-285-9771
FSC Code: 5331
MPN: AN123987

5331-00-527-8165 (AN123979)

NIIN: 00-527-8165
In stock
NSN: 5331-00-527-8165
FSC Code: 5331
MPN: AN123979

5331-00-527-8170 (AN123981)

NIIN: 00-527-8170
In stock
NSN: 5331-00-527-8170
FSC Code: 5331
MPN: AN123981

5331-00-291-7364 (AN123971)

NIIN: 00-291-7364
In stock
NSN: 5331-00-291-7364
FSC Code: 5331
MPN: AN123971

5331-00-291-7352 (AN123977)

NIIN: 00-291-7352
In stock
NSN: 5331-00-291-7352
FSC Code: 5331
MPN: AN123977

5331-00-291-7350 (AN123975)

NIIN: 00-291-7350
In stock
NSN: 5331-00-291-7350
FSC Code: 5331
MPN: AN123975

5331-00-843-4612 (AN123934)

NIIN: 00-843-4612
In stock
NSN: 5331-00-843-4612
FSC Code: 5331
MPN: AN123934

5331-00-585-0848 (AN123970)

NIIN: 00-585-0848
In stock
NSN: 5331-00-585-0848
FSC Code: 5331
MPN: AN123970

5331-00-527-9625 (AN123916)

NIIN: 00-527-9625
In stock
NSN: 5331-00-527-9625
FSC Code: 5331
MPN: AN123916

5331-00-599-2192 (AN123928)

NIIN: 00-599-2192
In stock
NSN: 5331-00-599-2192
FSC Code: 5331
MPN: AN123928

5331-00-290-9381 (AN-123933)

NIIN: 00-290-9381
In stock
NSN: 5331-00-290-9381
FSC Code: 5331
MPN: AN123933

5331-00-290-9374 (AN123915)

NIIN: 00-290-9374
In stock
NSN: 5331-00-290-9374
FSC Code: 5331
MPN: AN123915

5331-00-250-1228 (AN123930)

NIIN: 00-250-1228
In stock
NSN: 5331-00-250-1228
FSC Code: 5331
MPN: AN123930

5331-00-291-3302 (AN123957)

NIIN: 00-291-3302
In stock
NSN: 5331-00-291-3302
FSC Code: 5331
MPN: AN123957

5331-00-559-2420 (AN123929)

NIIN: 00-559-2420
In stock
NSN: 5331-00-559-2420
FSC Code: 5331
MPN: AN123929

5331-00-290-9393 (AN-123931)

NIIN: 00-290-9393
In stock
NSN: 5331-00-290-9393
FSC Code: 5331
MPN: AN123931

5331-00-527-9227 (AN123918)

NIIN: 00-527-9227
In stock
NSN: 5331-00-527-9227
FSC Code: 5331
MPN: AN123918