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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.

5331-01-298-4849 (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

5331-01-227-4868 (AS28775)

NIIN: 01-227-4868
In stock
NSN: 5331-01-227-4868
FSC Code: 5331
MPN: AS28775

5331-01-240-7423 (AS28775)

NIIN: 01-240-7423
In stock
NSN: 5331-01-240-7423
FSC Code: 5331
MPN: AS28775

5331-01-241-4033 (AS28775)

NIIN: 01-241-4033
In stock
NSN: 5331-01-241-4033
FSC Code: 5331
MPN: AS28775

5331-01-204-4223 (AS28775)

NIIN: 01-204-4223
In stock
NSN: 5331-01-204-4223
FSC Code: 5331
MPN: AS28775

5331-01-236-1539 (AS28775)

NIIN: 01-236-1539
In stock
NSN: 5331-01-236-1539
FSC Code: 5331
MPN: AS28775

5331-01-197-2590 (AS28775)

NIIN: 01-197-2590
In stock
NSN: 5331-01-197-2590
FSC Code: 5331
MPN: AS28775

5331-01-226-8750 (AS28775)

NIIN: 01-226-8750
In stock
NSN: 5331-01-226-8750
FSC Code: 5331
MPN: AS28775

5331-01-247-6866 (AS28775)

NIIN: 01-247-6866
In stock
NSN: 5331-01-247-6866
FSC Code: 5331
MPN: AS28775

5331-01-514-5873 (5I-4993)

NIIN: 01-514-5873
In stock
NSN: 5331-01-514-5873
FSC Code: 5331
MPN: 5I4993

5331-01-514-8209 (5I-7744)

NIIN: 01-514-8209
In stock
NSN: 5331-01-514-8209
FSC Code: 5331
MPN: 5I7744

5331-01-411-8116 (5HS327)

NIIN: 01-411-8116
In stock
NSN: 5331-01-411-8116
FSC Code: 5331
MPN: 5HS327

5331-01-324-9451 (AS-228)

NIIN: 01-324-9451
In stock
NSN: 5331-01-324-9451
FSC Code: 5331
MPN: AS228

5331-01-278-5080 (AS210-B46A)

NIIN: 01-278-5080
In stock
NSN: 5331-01-278-5080
FSC Code: 5331
MPN: AS210B46A

5331-01-144-3142 (AS21171A139)

NIIN: 01-144-3142
In stock
NSN: 5331-01-144-3142
FSC Code: 5331
MPN: AS21171A139

5331-01-225-4858 (AS1901-4C)

NIIN: 01-225-4858
In stock
NSN: 5331-01-225-4858
FSC Code: 5331
MPN: AS19014C

5331-01-293-6133 (AS-142B46A)

NIIN: 01-293-6133
In stock
NSN: 5331-01-293-6133
FSC Code: 5331
MPN: AS142B46A

5331-00-147-3429 (AS147-03-217)

NIIN: 00-147-3429
In stock
NSN: 5331-00-147-3429
FSC Code: 5331
MPN: AS14703217

5331-00-140-2315 (AS147-03-212)

NIIN: 00-140-2315
In stock
NSN: 5331-00-140-2315
FSC Code: 5331
MPN: AS14703212

5331-01-173-5810 (AS113-68-153)

NIIN: 01-173-5810
In stock
NSN: 5331-01-173-5810
FSC Code: 5331
MPN: AS11368153

5331-01-072-9198 (AS113-29-003)

NIIN: 01-072-9198
In stock
NSN: 5331-01-072-9198
FSC Code: 5331
MPN: AS11329003