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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.

5331-01-518-8438 (5X1299)

NIIN: 01-518-8438
In stock
NSN: 5331-01-518-8438
FSC Code: 5331
MPN: 5X1299

5331-01-518-8439 (5X1267)

NIIN: 01-518-8439
In stock
NSN: 5331-01-518-8439
FSC Code: 5331
MPN: 5X1267

5331-01-485-8199 (5W-6392)

NIIN: 01-485-8199
In stock
NSN: 5331-01-485-8199
FSC Code: 5331
MPN: 5W6392

5331-01-296-1955 (ASIB102E1-8-10)

NIIN: 01-296-1955
In stock
NSN: 5331-01-296-1955
FSC Code: 5331
MPN: ASIB102E1810

5331-01-542-3135 (V100)

NIIN: 01-542-3135
In stock
NSN: 5331-01-542-3135
FSC Code: 5331
MPN: V100

5331-01-485-7392 (5W-5475)

NIIN: 01-485-7392
In stock
NSN: 5331-01-485-7392
FSC Code: 5331
MPN: 5W5475

5331-01-467-6290 (5X1198)

NIIN: 01-467-6290
In stock
NSN: 5331-01-467-6290
FSC Code: 5331
MPN: 5X1198

5331-01-362-6162 (5X1035)

NIIN: 01-362-6162
In stock
NSN: 5331-01-362-6162
FSC Code: 5331
MPN: 5X1035

5331-01-523-8866 (5W-9411)

NIIN: 01-523-8866
In stock
NSN: 5331-01-523-8866
FSC Code: 5331
MPN: 5W9411

5331-01-542-3156 (5X1.5)

NIIN: 01-542-3156
In stock
NSN: 5331-01-542-3156
FSC Code: 5331
MPN: 5X15

5331-01-485-7364 (5W-6378)

NIIN: 01-485-7364
In stock
NSN: 5331-01-485-7364
FSC Code: 5331
MPN: 5W6378

5331-01-485-8201 (5W-6845)

NIIN: 01-485-8201
In stock
NSN: 5331-01-485-8201
FSC Code: 5331
MPN: 5W6845

5331-01-485-7385 (5W-5481)

NIIN: 01-485-7385
In stock
NSN: 5331-01-485-7385
FSC Code: 5331
MPN: 5W5481

5331-01-485-7395 (5W-5480)

NIIN: 01-485-7395
In stock
NSN: 5331-01-485-7395
FSC Code: 5331
MPN: 5W5480

5331-01-485-7371 (5W-4881)

NIIN: 01-485-7371
In stock
NSN: 5331-01-485-7371
FSC Code: 5331
MPN: 5W4881

5331-01-485-7388 (5W-5485)

NIIN: 01-485-7388
In stock
NSN: 5331-01-485-7388
FSC Code: 5331
MPN: 5W5485

5331-01-485-7389 (5W-5482)

NIIN: 01-485-7389
In stock
NSN: 5331-01-485-7389
FSC Code: 5331
MPN: 5W5482

5331-01-485-7383 (5W-3061)

NIIN: 01-485-7383
In stock
NSN: 5331-01-485-7383
FSC Code: 5331
MPN: 5W3061

5331-01-485-7355 (5W-4877)

NIIN: 01-485-7355
In stock
NSN: 5331-01-485-7355
FSC Code: 5331
MPN: 5W4877

5331-01-485-7369 (5W-4878)

NIIN: 01-485-7369
In stock
NSN: 5331-01-485-7369
FSC Code: 5331
MPN: 5W4878

5331-01-485-7377 (5W-4849)

NIIN: 01-485-7377
In stock
NSN: 5331-01-485-7377
FSC Code: 5331
MPN: 5W4849

5331-01-550-7760 (5W-4843)

NIIN: 01-550-7760
In stock
NSN: 5331-01-550-7760
FSC Code: 5331
MPN: 5W4843

5331-01-485-7386 (5W-4819)

NIIN: 01-485-7386
In stock
NSN: 5331-01-485-7386
FSC Code: 5331
MPN: 5W4819

5331-01-485-7390 (5W-1772)

NIIN: 01-485-7390
In stock
NSN: 5331-01-485-7390
FSC Code: 5331
MPN: 5W1772

5331-01-276-3238 (ASI-B1025E-7-16)

NIIN: 01-276-3238
In stock
NSN: 5331-01-276-3238
FSC Code: 5331
MPN: ASIB1025E716

5331-01-249-6736 (ASIB1025E4-24-1)

NIIN: 01-249-6736
In stock
NSN: 5331-01-249-6736
FSC Code: 5331
MPN: ASIB1025E4241

5331-01-249-1633 (ASIB1025E3-16-5)

NIIN: 01-249-1633
In stock
NSN: 5331-01-249-1633
FSC Code: 5331
MPN: ASIB1025E3165

5331-01-328-4159 (ASI500-3IN)

NIIN: 01-328-4159
In stock
NSN: 5331-01-328-4159
FSC Code: 5331
MPN: ASI5003IN

5331-01-326-9332 (ASI-201-SC-4IN)

NIIN: 01-326-9332
In stock
NSN: 5331-01-326-9332
FSC Code: 5331
MPN: ASI201SC4IN

5331-01-252-7146 (ASI)

NIIN: 01-252-7146
In stock
NSN: 5331-01-252-7146
FSC Code: 5331
MPN: ASI

5331-01-335-6199 (ASI)

NIIN: 01-335-6199
In stock
NSN: 5331-01-335-6199
FSC Code: 5331
MPN: ASI

5331-01-166-1583 (ASC1529754)

NIIN: 01-166-1583
In stock
NSN: 5331-01-166-1583
FSC Code: 5331
MPN: ASC1529754

5331-01-543-1975 (5VG90013-205)

NIIN: 01-543-1975
In stock
NSN: 5331-01-543-1975
FSC Code: 5331
MPN: 5VG90013205

5331-01-276-6705 (AS9967-041)

NIIN: 01-276-6705
In stock
NSN: 5331-01-276-6705
FSC Code: 5331
MPN: AS9967041

5331-01-325-1345 (AS9967-273)

NIIN: 01-325-1345
In stock
NSN: 5331-01-325-1345
FSC Code: 5331
MPN: AS9967273

5331-01-046-5405 (AS9967-270)

NIIN: 01-046-5405
In stock
NSN: 5331-01-046-5405
FSC Code: 5331
MPN: AS9967270

5331-00-580-3535 (ASA96)

NIIN: 00-580-3535
In stock
NSN: 5331-00-580-3535
FSC Code: 5331
MPN: ASA96

5331-01-046-5404 (AS9967-257)

NIIN: 01-046-5404
In stock
NSN: 5331-01-046-5404
FSC Code: 5331
MPN: AS9967257

5331-01-326-4945 (AS9967-258)

NIIN: 01-326-4945
In stock
NSN: 5331-01-326-4945
FSC Code: 5331
MPN: AS9967258

5331-01-046-5406 (AS9967-280)

NIIN: 01-046-5406
In stock
NSN: 5331-01-046-5406
FSC Code: 5331
MPN: AS9967280

5331-01-046-5407 (AS9967-283)

NIIN: 01-046-5407
In stock
NSN: 5331-01-046-5407
FSC Code: 5331
MPN: AS9967283

5331-00-414-2701 (AS9967-218)

NIIN: 00-414-2701
In stock
NSN: 5331-00-414-2701
FSC Code: 5331
MPN: AS9967218

5331-01-269-5153 (AS9967-126)

NIIN: 01-269-5153
In stock
NSN: 5331-01-269-5153
FSC Code: 5331
MPN: AS9967126

5331-00-414-2698 (AS9967-129)

NIIN: 00-414-2698
In stock
NSN: 5331-00-414-2698
FSC Code: 5331
MPN: AS9967129

5331-00-414-2699 (AS9967-231)

NIIN: 00-414-2699
In stock
NSN: 5331-00-414-2699
FSC Code: 5331
MPN: AS9967231

5331-01-117-6764 (AS9386-144)

NIIN: 01-117-6764
In stock
NSN: 5331-01-117-6764
FSC Code: 5331
MPN: AS9386144

5331-00-414-2756 (AS9967-110)

NIIN: 00-414-2756
In stock
NSN: 5331-00-414-2756
FSC Code: 5331
MPN: AS9967110

5331-01-235-3183 (AS9385)

NIIN: 01-235-3183
In stock
NSN: 5331-01-235-3183
FSC Code: 5331
MPN: AS9385