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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.

5331-01-132-0409 (P-400-312-908)

NIIN: 01-132-0409
In stock
NSN: 5331-01-132-0409
FSC Code: 5331
MPN: P400312908

5331-00-245-4070 (P399)

NIIN: 00-245-4070
In stock
NSN: 5331-00-245-4070
FSC Code: 5331
MPN: P399

5331-01-132-0917 (P-400-312-904)

NIIN: 01-132-0917
In stock
NSN: 5331-01-132-0917
FSC Code: 5331
MPN: P400312904

5331-01-475-3621 (AT159582)

NIIN: 01-475-3621
In stock
NSN: 5331-01-475-3621
FSC Code: 5331
MPN: AT159582

5331-01-132-0916 (P-400-312-924)

NIIN: 01-132-0916
In stock
NSN: 5331-01-132-0916
FSC Code: 5331
MPN: P400312924

5331-00-358-0020 (P39952)

NIIN: 00-358-0020
In stock
NSN: 5331-00-358-0020
FSC Code: 5331
MPN: P39952

5331-01-474-7088 (AT155199)

In stock

5331-01-475-0330 (AT154736)

NIIN: 01-475-0330
In stock
NSN: 5331-01-475-0330
FSC Code: 5331
MPN: AT154736

5331-01-475-0387 (AT153835)

NIIN: 01-475-0387
In stock
NSN: 5331-01-475-0387
FSC Code: 5331
MPN: AT153835

5331-01-475-0288 (AT154310)

NIIN: 01-475-0288
In stock
NSN: 5331-01-475-0288
FSC Code: 5331
MPN: AT154310

5331-01-137-7273 (P--386)

NIIN: 01-137-7273
In stock
NSN: 5331-01-137-7273
FSC Code: 5331
MPN: P386

5331-01-567-6037 (AT124574)

NIIN: 01-567-6037
In stock
NSN: 5331-01-567-6037
FSC Code: 5331
MPN: AT124574

5331-01-176-7934 (P3727)

NIIN: 01-176-7934
In stock
NSN: 5331-01-176-7934
FSC Code: 5331
MPN: P3727

5331-01-312-3744 (P383-5)

NIIN: 01-312-3744
In stock
NSN: 5331-01-312-3744
FSC Code: 5331
MPN: P3835

5331-01-145-1166 (P3608A)

NIIN: 01-145-1166
In stock
NSN: 5331-01-145-1166
FSC Code: 5331
MPN: P3608A

5331-00-936-1567 (P35445)

NIIN: 00-936-1567
In stock
NSN: 5331-00-936-1567
FSC Code: 5331
MPN: P35445

5331-01-108-1052 (P356050011)

NIIN: 01-108-1052
In stock
NSN: 5331-01-108-1052
FSC Code: 5331
MPN: P356050011

5331-01-317-9510 (P3466)

NIIN: 01-317-9510
In stock
NSN: 5331-01-317-9510
FSC Code: 5331
MPN: P3466

5331-01-318-1906 (P3497)

NIIN: 01-318-1906
In stock
NSN: 5331-01-318-1906
FSC Code: 5331
MPN: P3497

5331-01-309-6938 (P3498)

NIIN: 01-309-6938
In stock
NSN: 5331-01-309-6938
FSC Code: 5331
MPN: P3498

5331-00-866-3074 (P331)

NIIN: 00-866-3074
In stock
NSN: 5331-00-866-3074
FSC Code: 5331
MPN: P331

5331-00-781-4252 (P333)

NIIN: 00-781-4252
In stock
NSN: 5331-00-781-4252
FSC Code: 5331
MPN: P333

5331-01-331-9299 (P32B)

NIIN: 01-331-9299
In stock
NSN: 5331-01-331-9299
FSC Code: 5331
MPN: P32B

5331-01-177-8162 (P-32)

NIIN: 01-177-8162
In stock
NSN: 5331-01-177-8162
FSC Code: 5331
MPN: P32

5331-01-207-7605 (P-31185)

NIIN: 01-207-7605
In stock
NSN: 5331-01-207-7605
FSC Code: 5331
MPN: P31185

5331-00-574-6276 (P30343)

NIIN: 00-574-6276
In stock
NSN: 5331-00-574-6276
FSC Code: 5331
MPN: P30343

5331-01-046-0617 (P294)

NIIN: 01-046-0617
In stock
NSN: 5331-01-046-0617
FSC Code: 5331
MPN: P294

5331-01-548-2679 (ASP)

NIIN: 01-548-2679
In stock
NSN: 5331-01-548-2679
FSC Code: 5331
MPN: ASP

5331-01-548-2675 (ASP)

NIIN: 01-548-2675
In stock
NSN: 5331-01-548-2675
FSC Code: 5331
MPN: ASP

5331-01-088-2449 (P276)

NIIN: 01-088-2449
In stock
NSN: 5331-01-088-2449
FSC Code: 5331
MPN: P276

5331-01-380-7334 (ASIB1025E5-14-10)

NIIN: 01-380-7334
In stock
NSN: 5331-01-380-7334
FSC Code: 5331
MPN: ASIB1025E51410

5331-01-380-7333 (ASIB102E1-5-10)

NIIN: 01-380-7333
In stock
NSN: 5331-01-380-7333
FSC Code: 5331
MPN: ASIB102E1510

5331-01-379-4319 (ASIB102A1-015-10)

NIIN: 01-379-4319
In stock
NSN: 5331-01-379-4319
FSC Code: 5331
MPN: ASIB102A101510

5331-01-308-8104 (P27082)

NIIN: 01-308-8104
In stock
NSN: 5331-01-308-8104
FSC Code: 5331
MPN: P27082

5331-00-574-6246 (P26822)

NIIN: 00-574-6246
In stock
NSN: 5331-00-574-6246
FSC Code: 5331
MPN: P26822

5331-00-838-9419 (P27080)

NIIN: 00-838-9419
In stock
NSN: 5331-00-838-9419
FSC Code: 5331
MPN: P27080

5331-01-172-1861 (P26866-AGN1922)

NIIN: 01-172-1861
In stock
NSN: 5331-01-172-1861
FSC Code: 5331
MPN: P26866AGN1922

5331-00-987-4949 (P26345)

NIIN: 00-987-4949
In stock
NSN: 5331-00-987-4949
FSC Code: 5331
MPN: P26345

5331-01-172-1862 (P26866-AGN1923)

NIIN: 01-172-1862
In stock
NSN: 5331-01-172-1862
FSC Code: 5331
MPN: P26866AGN1923

5331-00-574-6245 (P26482)

NIIN: 00-574-6245
In stock
NSN: 5331-00-574-6245
FSC Code: 5331
MPN: P26482

5331-01-022-3096 (P2650E)

NIIN: 01-022-3096
In stock
NSN: 5331-01-022-3096
FSC Code: 5331
MPN: P2650E

5331-99-645-8726 (CH101-62-013)

NIIN: 99-645-8726
In stock
NSN: 5331-99-645-8726
FSC Code: 5331
MPN: CH10162013

5331-99-610-0653 (HDS1171-5-8)

NIIN: 99-610-0653
In stock
NSN: 5331-99-610-0653
FSC Code: 5331
MPN: HDS117158

5331-00-605-1729 (P2623E)

NIIN: 00-605-1729
In stock
NSN: 5331-00-605-1729
FSC Code: 5331
MPN: P2623E

5331-00-574-6244 (P26234)

NIIN: 00-574-6244
In stock
NSN: 5331-00-574-6244
FSC Code: 5331
MPN: P26234

5331-01-022-3095 (P2604E)

NIIN: 01-022-3095
In stock
NSN: 5331-01-022-3095
FSC Code: 5331
MPN: P2604E

5331-01-161-2407 (P2602E)

NIIN: 01-161-2407
In stock
NSN: 5331-01-161-2407
FSC Code: 5331
MPN: P2602E

5331-01-203-2565 (P-258017)

NIIN: 01-203-2565
In stock
NSN: 5331-01-203-2565
FSC Code: 5331
MPN: P258017