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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.

5331-00-068-4382 (00173-12)

NIIN: 00-068-4382
In stock
NSN: 5331-00-068-4382
FSC Code: 5331
MPN: 0017312

5331-01-205-9797 (00175)

NIIN: 01-205-9797
In stock
NSN: 5331-01-205-9797
FSC Code: 5331
MPN: 00175

5331-01-330-7133 (001740T)

NIIN: 01-330-7133
In stock
NSN: 5331-01-330-7133
FSC Code: 5331
MPN: 001740T

5331-00-684-7785 (00175-02)

NIIN: 00-684-7785
In stock
NSN: 5331-00-684-7785
FSC Code: 5331
MPN: 0017502

5331-00-582-7041 (0017-6025)

NIIN: 00-582-7041
In stock
NSN: 5331-00-582-7041
FSC Code: 5331
MPN: 00176025

5331-01-328-6015 (001766T)

NIIN: 01-328-6015
In stock
NSN: 5331-01-328-6015
FSC Code: 5331
MPN: 001766T

5331-00-514-4471 (001778T)

NIIN: 00-514-4471
In stock
NSN: 5331-00-514-4471
FSC Code: 5331
MPN: 001778T

5331-01-205-9799 (00178)

NIIN: 01-205-9799
In stock
NSN: 5331-01-205-9799
FSC Code: 5331
MPN: 00178

5331-00-322-0137 (00179-025F70)

NIIN: 00-322-0137
In stock
NSN: 5331-00-322-0137
FSC Code: 5331
MPN: 00179025F70

5331-01-310-2345 (0018-3878-910)

NIIN: 01-310-2345
In stock
NSN: 5331-01-310-2345
FSC Code: 5331
MPN: 00183878910

5331-00-959-8005 (0018-5035)

NIIN: 00-959-8005
In stock
NSN: 5331-00-959-8005
FSC Code: 5331
MPN: 00185035

5331-01-331-3727 (001857T)

NIIN: 01-331-3727
In stock
NSN: 5331-01-331-3727
FSC Code: 5331
MPN: 001857T

5331-00-402-2594 (0018-8307)

NIIN: 00-402-2594
In stock
NSN: 5331-00-402-2594
FSC Code: 5331
MPN: 00188307

5331-00-727-1286 (0018945500)

NIIN: 00-727-1286
In stock
NSN: 5331-00-727-1286
FSC Code: 5331
MPN: 0018945500

5331-01-278-1742 (001904EE)

NIIN: 01-278-1742
In stock
NSN: 5331-01-278-1742
FSC Code: 5331
MPN: 001904EE

5331-00-167-5166 (001905XX)

NIIN: 00-167-5166
In stock
NSN: 5331-00-167-5166
FSC Code: 5331
MPN: 001905XX

5331-01-322-2838 (001919ED)

NIIN: 01-322-2838
In stock
NSN: 5331-01-322-2838
FSC Code: 5331
MPN: 001919ED

5331-01-227-3324 (001935EE)

NIIN: 01-227-3324
In stock
NSN: 5331-01-227-3324
FSC Code: 5331
MPN: 001935EE

5331-01-157-9835 (001953EE)

NIIN: 01-157-9835
In stock
NSN: 5331-01-157-9835
FSC Code: 5331
MPN: 001953EE

5331-01-308-0240 (001-950021)

NIIN: 01-308-0240
In stock
NSN: 5331-01-308-0240
FSC Code: 5331
MPN: 001950021

5331-01-143-1703 (001927EE)

NIIN: 01-143-1703
In stock
NSN: 5331-01-143-1703
FSC Code: 5331
MPN: 001927EE

5331-00-599-6384 (0019973445)

NIIN: 00-599-6384
In stock
NSN: 5331-00-599-6384
FSC Code: 5331
MPN: 0019973445

5331-01-022-1326 (0019972945)

NIIN: 01-022-1326
In stock
NSN: 5331-01-022-1326
FSC Code: 5331
MPN: 0019972945

5331-01-024-4644 (0019972148)

NIIN: 01-024-4644
In stock
NSN: 5331-01-024-4644
FSC Code: 5331
MPN: 0019972148

5331-00-357-4405 (0019974945)

NIIN: 00-357-4405
In stock
NSN: 5331-00-357-4405
FSC Code: 5331
MPN: 0019974945

5331-01-022-1165 (0019977940)

NIIN: 01-022-1165
In stock
NSN: 5331-01-022-1165
FSC Code: 5331
MPN: 0019977940

5331-01-022-1339 (0019978645)

NIIN: 01-022-1339
In stock
NSN: 5331-01-022-1339
FSC Code: 5331
MPN: 0019978645

5331-01-022-1338 (0019978745)

NIIN: 01-022-1338
In stock
NSN: 5331-01-022-1338
FSC Code: 5331
MPN: 0019978745

5331-00-171-6691 (0019974245)

NIIN: 00-171-6691
In stock
NSN: 5331-00-171-6691
FSC Code: 5331
MPN: 0019974245

5331-00-676-6150 (001E515-8)

NIIN: 00-676-6150
In stock
NSN: 5331-00-676-6150
FSC Code: 5331
MPN: 001E5158

5331-01-022-1336 (0019979545)

NIIN: 01-022-1336
In stock
NSN: 5331-01-022-1336
FSC Code: 5331
MPN: 0019979545

5331-01-156-6324 (002)

NIIN: 01-156-6324
In stock
NSN: 5331-01-156-6324
FSC Code: 5331
MPN: 002

5331-01-208-6752 (001RR95602/0007)

NIIN: 01-208-6752
In stock
NSN: 5331-01-208-6752
FSC Code: 5331
MPN: 001RR956020007

5331-01-169-2469 (002017)

NIIN: 01-169-2469
In stock
NSN: 5331-01-169-2469
FSC Code: 5331
MPN: 002017

5331-00-166-0967 (002017)

NIIN: 00-166-0967
In stock
NSN: 5331-00-166-0967
FSC Code: 5331
MPN: 002017

5331-01-271-9364 (0020839)

NIIN: 01-271-9364
In stock
NSN: 5331-01-271-9364
FSC Code: 5331
MPN: 0020839

5331-01-260-4693 (00207357)

NIIN: 01-260-4693
In stock
NSN: 5331-01-260-4693
FSC Code: 5331
MPN: 00207357

5331-01-213-6778 (00211)

NIIN: 01-213-6778
In stock
NSN: 5331-01-213-6778
FSC Code: 5331
MPN: 00211

5331-01-205-4262 (00214)

NIIN: 01-205-4262
In stock
NSN: 5331-01-205-4262
FSC Code: 5331
MPN: 00214

5331-01-209-9417 (002-188)

NIIN: 01-209-9417
In stock
NSN: 5331-01-209-9417
FSC Code: 5331
MPN: 002188

5331-01-211-0711 (002-191)

NIIN: 01-211-0711
In stock
NSN: 5331-01-211-0711
FSC Code: 5331
MPN: 002191

5331-00-595-6327 (002222)

NIIN: 00-595-6327
In stock
NSN: 5331-00-595-6327
FSC Code: 5331
MPN: 002222

5331-01-099-2736 (002224)

NIIN: 01-099-2736
In stock
NSN: 5331-01-099-2736
FSC Code: 5331
MPN: 002224

5331-01-266-3946 (00223-0002)

NIIN: 01-266-3946
In stock
NSN: 5331-01-266-3946
FSC Code: 5331
MPN: 002230002

5331-00-119-8183 (002-253-003)

NIIN: 00-119-8183
In stock
NSN: 5331-00-119-8183
FSC Code: 5331
MPN: 002253003

5331-00-162-5359 (002-271-114)

NIIN: 00-162-5359
In stock
NSN: 5331-00-162-5359
FSC Code: 5331
MPN: 002271114

5331-00-913-7702 (002-271-153)

NIIN: 00-913-7702
In stock
NSN: 5331-00-913-7702
FSC Code: 5331
MPN: 002271153

5331-00-918-4881 (002-271-154)

NIIN: 00-918-4881
In stock
NSN: 5331-00-918-4881
FSC Code: 5331
MPN: 002271154