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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.

5331-00-202-0555 (S9412-117)

NIIN: 00-202-0555
In stock
NSN: 5331-00-202-0555
FSC Code: 5331
MPN: S9412117

5331-00-404-1476 (S9412-039)

NIIN: 00-404-1476
In stock
NSN: 5331-00-404-1476
FSC Code: 5331
MPN: S9412039

5331-00-519-7698 (S9412-046)

NIIN: 00-519-7698
In stock
NSN: 5331-00-519-7698
FSC Code: 5331
MPN: S9412046

5331-00-236-6554 (S9412-113)

NIIN: 00-236-6554
In stock
NSN: 5331-00-236-6554
FSC Code: 5331
MPN: S9412113

5331-00-401-4898 (S9412-042)

NIIN: 00-401-4898
In stock
NSN: 5331-00-401-4898
FSC Code: 5331
MPN: S9412042

5331-01-014-6168 (S9412-109)

NIIN: 01-014-6168
In stock
NSN: 5331-01-014-6168
FSC Code: 5331
MPN: S9412109

5331-01-290-7276 (S9412-025)

NIIN: 01-290-7276
In stock
NSN: 5331-01-290-7276
FSC Code: 5331
MPN: S9412025

5331-00-426-6552 (S9412-034)

NIIN: 00-426-6552
In stock
NSN: 5331-00-426-6552
FSC Code: 5331
MPN: S9412034

5331-00-187-9852 (S9412-024)

NIIN: 00-187-9852
In stock
NSN: 5331-00-187-9852
FSC Code: 5331
MPN: S9412024

5331-00-450-3526 (S9412-027)

NIIN: 00-450-3526
In stock
NSN: 5331-00-450-3526
FSC Code: 5331
MPN: S9412027

5331-00-434-1074 (S94112-556)

NIIN: 00-434-1074
In stock
NSN: 5331-00-434-1074
FSC Code: 5331
MPN: S94112556

5331-00-536-6425 (S9121F26)

NIIN: 00-536-6425
In stock
NSN: 5331-00-536-6425
FSC Code: 5331
MPN: S9121F26

5331-01-082-6982 (S9254F1010)

NIIN: 01-082-6982
In stock
NSN: 5331-01-082-6982
FSC Code: 5331
MPN: S9254F1010

5331-00-400-8568 (S9-1-014)

NIIN: 00-400-8568
In stock
NSN: 5331-00-400-8568
FSC Code: 5331
MPN: S91014

5331-01-189-3631 (S92346)

NIIN: 01-189-3631
In stock
NSN: 5331-01-189-3631
FSC Code: 5331
MPN: S92346

5331-01-166-4014 (S9121C26)

NIIN: 01-166-4014
In stock
NSN: 5331-01-166-4014
FSC Code: 5331
MPN: S9121C26

5331-01-226-4527 (S9121E42)

NIIN: 01-226-4527
In stock
NSN: 5331-01-226-4527
FSC Code: 5331
MPN: S9121E42

5331-00-922-3262 (S9086-503)

NIIN: 00-922-3262
In stock
NSN: 5331-00-922-3262
FSC Code: 5331
MPN: S9086503

5331-00-922-3263 (S9086-504P)

NIIN: 00-922-3263
In stock
NSN: 5331-00-922-3263
FSC Code: 5331
MPN: S9086504P

5331-01-342-2536 (CI-0242)

NIIN: 01-342-2536
In stock
NSN: 5331-01-342-2536
FSC Code: 5331
MPN: CI0242

5331-00-922-3259 (S9086-17P)

NIIN: 00-922-3259
In stock
NSN: 5331-00-922-3259
FSC Code: 5331
MPN: S908617P

5331-00-922-3264 (S9086-506P)

NIIN: 00-922-3264
In stock
NSN: 5331-00-922-3264
FSC Code: 5331
MPN: S9086506P

5331-00-244-4145 (S9086-502)

NIIN: 00-244-4145
In stock
NSN: 5331-00-244-4145
FSC Code: 5331
MPN: S9086502

5331-01-190-1889 (S90848)

NIIN: 01-190-1889
In stock
NSN: 5331-01-190-1889
FSC Code: 5331
MPN: S90848

5331-01-333-3736 (S-9055)

NIIN: 01-333-3736
In stock
NSN: 5331-01-333-3736
FSC Code: 5331
MPN: S9055

5331-00-009-9194 (S9029B910)

NIIN: 00-009-9194
In stock
NSN: 5331-00-009-9194
FSC Code: 5331
MPN: S9029B910

5331-00-249-0535 (S9029B908)

NIIN: 00-249-0535
In stock
NSN: 5331-00-249-0535
FSC Code: 5331
MPN: S9029B908

5331-01-043-0610 (S9029E904)

NIIN: 01-043-0610
In stock
NSN: 5331-01-043-0610
FSC Code: 5331
MPN: S9029E904

5331-00-245-3830 (S9029B906)

NIIN: 00-245-3830
In stock
NSN: 5331-00-245-3830
FSC Code: 5331
MPN: S9029B906

5331-01-114-3711 (S9029B905)

NIIN: 01-114-3711
In stock
NSN: 5331-01-114-3711
FSC Code: 5331
MPN: S9029B905

5331-00-245-3837 (S9029B904)

NIIN: 00-245-3837
In stock
NSN: 5331-00-245-3837
FSC Code: 5331
MPN: S9029B904

5331-00-001-6696 (S9028L904)

NIIN: 00-001-6696
In stock
NSN: 5331-00-001-6696
FSC Code: 5331
MPN: S9028L904

5331-01-111-9278 (S9029B903)

NIIN: 01-111-9278
In stock
NSN: 5331-01-111-9278
FSC Code: 5331
MPN: S9029B903

5331-00-492-9191 (S9029A904)

NIIN: 00-492-9191
In stock
NSN: 5331-00-492-9191
FSC Code: 5331
MPN: S9029A904

5331-01-039-7581 (S9028L910)

NIIN: 01-039-7581
In stock
NSN: 5331-01-039-7581
FSC Code: 5331
MPN: S9028L910

5331-01-041-9665 (S9029A912)

NIIN: 01-041-9665
In stock
NSN: 5331-01-041-9665
FSC Code: 5331
MPN: S9029A912

5331-01-211-0460 (S9028L908)

NIIN: 01-211-0460
In stock
NSN: 5331-01-211-0460
FSC Code: 5331
MPN: S9028L908

5331-01-029-0760 (S9028K906)

NIIN: 01-029-0760
In stock
NSN: 5331-01-029-0760
FSC Code: 5331
MPN: S9028K906

5331-00-001-8190 (S9028K904)

NIIN: 00-001-8190
In stock
NSN: 5331-00-001-8190
FSC Code: 5331
MPN: S9028K904

5331-00-935-9168 (S9028E906)

NIIN: 00-935-9168
In stock
NSN: 5331-00-935-9168
FSC Code: 5331
MPN: S9028E906

5331-00-288-2014 (S9028G908)

NIIN: 00-288-2014
In stock
NSN: 5331-00-288-2014
FSC Code: 5331
MPN: S9028G908

5331-01-233-1975 (S9028G904)

NIIN: 01-233-1975
In stock
NSN: 5331-01-233-1975
FSC Code: 5331
MPN: S9028G904

5331-00-914-2890 (S9028D904)

NIIN: 00-914-2890
In stock
NSN: 5331-00-914-2890
FSC Code: 5331
MPN: S9028D904

5331-00-914-2888 (S9028D908)

NIIN: 00-914-2888
In stock
NSN: 5331-00-914-2888
FSC Code: 5331
MPN: S9028D908

5331-00-782-9823 (S9028D906)

NIIN: 00-782-9823
In stock
NSN: 5331-00-782-9823
FSC Code: 5331
MPN: S9028D906

5331-00-903-7838 (S9028E904)

NIIN: 00-903-7838
In stock
NSN: 5331-00-903-7838
FSC Code: 5331
MPN: S9028E904

5331-00-930-0658 (S9028E902)

NIIN: 00-930-0658
In stock
NSN: 5331-00-930-0658
FSC Code: 5331
MPN: S9028E902

5331-01-112-7964 (S9027G155)

NIIN: 01-112-7964
In stock
NSN: 5331-01-112-7964
FSC Code: 5331
MPN: S9027G155