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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.

5331-01-068-5532 (AS3085-035)

NIIN: 01-068-5532
In stock
NSN: 5331-01-068-5532
FSC Code: 5331
MPN: AS3085035

5331-01-450-0458 (5K206)

NIIN: 01-450-0458
In stock
NSN: 5331-01-450-0458
FSC Code: 5331
MPN: 5K206

5331-01-044-3053 (AS3085-016)

NIIN: 01-044-3053
In stock
NSN: 5331-01-044-3053
FSC Code: 5331
MPN: AS3085016

5331-01-090-1553 (AS3084-07)

NIIN: 01-090-1553
In stock
NSN: 5331-01-090-1553
FSC Code: 5331
MPN: AS308407

5331-01-044-0786 (AS3085-022)

NIIN: 01-044-0786
In stock
NSN: 5331-01-044-0786
FSC Code: 5331
MPN: AS3085022

5331-01-286-3964 (AS3085-014)

NIIN: 01-286-3964
In stock
NSN: 5331-01-286-3964
FSC Code: 5331
MPN: AS3085014

5331-01-078-5128 (AS3084-02)

NIIN: 01-078-5128
In stock
NSN: 5331-01-078-5128
FSC Code: 5331
MPN: AS308402

5331-01-093-2485 (AS3084-20)

NIIN: 01-093-2485
In stock
NSN: 5331-01-093-2485
FSC Code: 5331
MPN: AS308420

5331-01-324-5262 (AS29513-250)

NIIN: 01-324-5262
In stock
NSN: 5331-01-324-5262
FSC Code: 5331
MPN: AS29513250

5331-01-307-5050 (AS29513-360)

NIIN: 01-307-5050
In stock
NSN: 5331-01-307-5050
FSC Code: 5331
MPN: AS29513360

5331-01-130-9796 (AS3084-010)

NIIN: 01-130-9796
In stock
NSN: 5331-01-130-9796
FSC Code: 5331
MPN: AS3084010

5331-01-325-5242 (AS29561-336)

NIIN: 01-325-5242
In stock
NSN: 5331-01-325-5242
FSC Code: 5331
MPN: AS29561336

5331-01-175-3481 (AS29513-428)

NIIN: 01-175-3481
In stock
NSN: 5331-01-175-3481
FSC Code: 5331
MPN: AS29513428

5331-01-398-0764 (5K178)

NIIN: 01-398-0764
In stock
NSN: 5331-01-398-0764
FSC Code: 5331
MPN: 5K178

5331-00-884-0940 (AS29561)

NIIN: 00-884-0940
In stock
NSN: 5331-00-884-0940
FSC Code: 5331
MPN: AS29561

5331-00-988-8809 (AS29561)

NIIN: 00-988-8809
In stock
NSN: 5331-00-988-8809
FSC Code: 5331
MPN: AS29561

5331-00-060-1142 (AS29561-012)

NIIN: 00-060-1142
In stock
NSN: 5331-00-060-1142
FSC Code: 5331
MPN: AS29561012

5331-00-641-4724 (AS29561-016)

NIIN: 00-641-4724
In stock
NSN: 5331-00-641-4724
FSC Code: 5331
MPN: AS29561016

5331-01-146-7309 (AS29513-467)

NIIN: 01-146-7309
In stock
NSN: 5331-01-146-7309
FSC Code: 5331
MPN: AS29513467

5331-01-174-8466 (AS29513-374)

NIIN: 01-174-8466
In stock
NSN: 5331-01-174-8466
FSC Code: 5331
MPN: AS29513374

5331-01-298-4849 (AS29513-382)

NIIN: 01-298-4849
In stock
NSN: 5331-01-298-4849
FSC Code: 5331
MPN: AS29513382

5331-01-160-4350 (AS29513-371)

NIIN: 01-160-4350
In stock
NSN: 5331-01-160-4350
FSC Code: 5331
MPN: AS29513371

5331-01-134-1984 (AS29513-284)

NIIN: 01-134-1984
In stock
NSN: 5331-01-134-1984
FSC Code: 5331
MPN: AS29513284

5331-01-174-0215 (AS29513-376)

NIIN: 01-174-0215
In stock
NSN: 5331-01-174-0215
FSC Code: 5331
MPN: AS29513376

5331-00-252-6045 (AS29513-442)

NIIN: 00-252-6045
In stock
NSN: 5331-00-252-6045
FSC Code: 5331
MPN: AS29513442

5331-01-209-9762 (AS29513-176)

NIIN: 01-209-9762
In stock
NSN: 5331-01-209-9762
FSC Code: 5331
MPN: AS29513176

5331-01-238-0318 (AS29513-171)

NIIN: 01-238-0318
In stock
NSN: 5331-01-238-0318
FSC Code: 5331
MPN: AS29513171

5331-01-043-8083 (AS29513-280)

NIIN: 01-043-8083
In stock
NSN: 5331-01-043-8083
FSC Code: 5331
MPN: AS29513280

5331-01-246-2774 (AS29513-154)

NIIN: 01-246-2774
In stock
NSN: 5331-01-246-2774
FSC Code: 5331
MPN: AS29513154

5331-01-217-1787 (AS29513-353)

NIIN: 01-217-1787
In stock
NSN: 5331-01-217-1787
FSC Code: 5331
MPN: AS29513353

5331-01-342-7783 (5K104)

NIIN: 01-342-7783
In stock
NSN: 5331-01-342-7783
FSC Code: 5331
MPN: 5K104

5331-01-099-4705 (AS28775-322)

NIIN: 01-099-4705
In stock
NSN: 5331-01-099-4705
FSC Code: 5331
MPN: AS28775322

5331-00-827-6915 (AS29513-239)

NIIN: 00-827-6915
In stock
NSN: 5331-00-827-6915
FSC Code: 5331
MPN: AS29513239

5331-01-245-2283 (AS29513-173)

NIIN: 01-245-2283
In stock
NSN: 5331-01-245-2283
FSC Code: 5331
MPN: AS29513173

5331-01-221-1770 (AS28775)

NIIN: 01-221-1770
In stock
NSN: 5331-01-221-1770
FSC Code: 5331
MPN: AS28775

5331-01-058-4005 (AS29513-117)

NIIN: 01-058-4005
In stock
NSN: 5331-01-058-4005
FSC Code: 5331
MPN: AS29513117

5331-01-189-6522 (AS28775-239)

NIIN: 01-189-6522
In stock
NSN: 5331-01-189-6522
FSC Code: 5331
MPN: AS28775239

5331-01-232-5628 (AS28775-148)

NIIN: 01-232-5628
In stock
NSN: 5331-01-232-5628
FSC Code: 5331
MPN: AS28775148

5331-01-203-0270 (AS28775-045)

NIIN: 01-203-0270
In stock
NSN: 5331-01-203-0270
FSC Code: 5331
MPN: AS28775045

5331-01-249-3720 (AS28775-257)

NIIN: 01-249-3720
In stock
NSN: 5331-01-249-3720
FSC Code: 5331
MPN: AS28775257

5331-00-551-2249 (AS28775-218)

NIIN: 00-551-2249
In stock
NSN: 5331-00-551-2249
FSC Code: 5331
MPN: AS28775218

5331-01-108-4451 (AS28775-106)

NIIN: 01-108-4451
In stock
NSN: 5331-01-108-4451
FSC Code: 5331
MPN: AS28775106

5331-01-231-5216 (AS28775)

NIIN: 01-231-5216
In stock
NSN: 5331-01-231-5216
FSC Code: 5331
MPN: AS28775

5331-01-251-6379 (AS28775-126)

NIIN: 01-251-6379
In stock
NSN: 5331-01-251-6379
FSC Code: 5331
MPN: AS28775126

5331-01-239-9247 (AS28775)

NIIN: 01-239-9247
In stock
NSN: 5331-01-239-9247
FSC Code: 5331
MPN: AS28775

5331-01-235-0137 (AS28775)

NIIN: 01-235-0137
In stock
NSN: 5331-01-235-0137
FSC Code: 5331
MPN: AS28775

5331-01-350-2289 (5J2383)

NIIN: 01-350-2289
In stock
NSN: 5331-01-350-2289
FSC Code: 5331
MPN: 5J2383

5331-01-236-1540 (AS28775)

NIIN: 01-236-1540
In stock
NSN: 5331-01-236-1540
FSC Code: 5331
MPN: AS28775