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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.

5331-01-392-5785 (858089-6)

NIIN: 01-392-5785
In stock
NSN: 5331-01-392-5785
FSC Code: 5331
MPN: 8580896

5331-00-821-8844 (M22050-1-229)

NIIN: 00-821-8844
In stock
NSN: 5331-00-821-8844
FSC Code: 5331
MPN: M220501229

5331-01-138-4614 (M2074CV)

NIIN: 01-138-4614
In stock
NSN: 5331-01-138-4614
FSC Code: 5331
MPN: M2074CV

5331-00-111-6984 (M2032-7)

NIIN: 00-111-6984
In stock
NSN: 5331-00-111-6984
FSC Code: 5331
MPN: M20327

5331-00-001-9861 (M201399AQ)

NIIN: 00-001-9861
In stock
NSN: 5331-00-001-9861
FSC Code: 5331
MPN: M201399AQ

5331-00-576-9612 (M201399Z)

NIIN: 00-576-9612
In stock
NSN: 5331-00-576-9612
FSC Code: 5331
MPN: M201399Z

5331-00-921-4393 (M201399A)

NIIN: 00-921-4393
In stock
NSN: 5331-00-921-4393
FSC Code: 5331
MPN: M201399A

5331-00-431-6779 (M1C9278)

NIIN: 00-431-6779
In stock
NSN: 5331-00-431-6779
FSC Code: 5331
MPN: M1C9278

5331-00-406-0123 (M1C4734)

NIIN: 00-406-0123
In stock
NSN: 5331-00-406-0123
FSC Code: 5331
MPN: M1C4734

5331-01-526-1230 (853-09958-00)

NIIN: 01-526-1230
In stock
NSN: 5331-01-526-1230
FSC Code: 5331
MPN: 8530995800

5331-01-410-7084 (853-09343-000)

NIIN: 01-410-7084
In stock
NSN: 5331-01-410-7084
FSC Code: 5331
MPN: 85309343000

5331-01-324-3391 (M148-S40)

NIIN: 01-324-3391
In stock
NSN: 5331-01-324-3391
FSC Code: 5331
MPN: M148S40

5331-01-330-9604 (M1419-0-EA)

NIIN: 01-330-9604
In stock
NSN: 5331-01-330-9604
FSC Code: 5331
MPN: M14190EA

5331-00-476-6904 (M12203-16)

NIIN: 00-476-6904
In stock
NSN: 5331-00-476-6904
FSC Code: 5331
MPN: M1220316

5331-00-476-6903 (M12203-15)

NIIN: 00-476-6903
In stock
NSN: 5331-00-476-6903
FSC Code: 5331
MPN: M1220315

5331-00-240-6180 (M12158ITEM9)

NIIN: 00-240-6180
In stock
NSN: 5331-00-240-6180
FSC Code: 5331
MPN: M12158ITEM9

5331-01-315-7048 (M1-15141)

NIIN: 01-315-7048
In stock
NSN: 5331-01-315-7048
FSC Code: 5331
MPN: M115141

5331-01-332-7116 (M107-239)

NIIN: 01-332-7116
In stock
NSN: 5331-01-332-7116
FSC Code: 5331
MPN: M107239

5331-01-294-2176 (M107-237)

NIIN: 01-294-2176
In stock
NSN: 5331-01-294-2176
FSC Code: 5331
MPN: M107237

5331-01-101-0592 (M107-232)

NIIN: 01-101-0592
In stock
NSN: 5331-01-101-0592
FSC Code: 5331
MPN: M107232

5331-01-313-4946 (M0-17381)

NIIN: 01-313-4946
In stock
NSN: 5331-01-313-4946
FSC Code: 5331
MPN: M017381

5331-01-340-4242 (85143-1)

NIIN: 01-340-4242
In stock
NSN: 5331-01-340-4242
FSC Code: 5331
MPN: 851431

5331-01-313-4945 (M0-17384)

NIIN: 01-313-4945
In stock
NSN: 5331-01-313-4945
FSC Code: 5331
MPN: M017384

5331-00-595-4867 (LWS6003)

NIIN: 00-595-4867
In stock
NSN: 5331-00-595-4867
FSC Code: 5331
MPN: LWS6003

5331-00-168-5581 (LTCT4938)

NIIN: 00-168-5581
In stock
NSN: 5331-00-168-5581
FSC Code: 5331
MPN: LTCT4938

5331-01-513-6824 (850-930)

NIIN: 01-513-6824
In stock
NSN: 5331-01-513-6824
FSC Code: 5331
MPN: 850930

5331-01-513-8382 (850-510)

NIIN: 01-513-8382
In stock
NSN: 5331-01-513-8382
FSC Code: 5331
MPN: 850510

5331-00-898-9977 (LS5041-33)

NIIN: 00-898-9977
In stock
NSN: 5331-00-898-9977
FSC Code: 5331
MPN: LS504133

5331-00-599-8713 (LS4629-50)

NIIN: 00-599-8713
In stock
NSN: 5331-00-599-8713
FSC Code: 5331
MPN: LS462950

5331-00-813-6350 (LS4629-26)

NIIN: 00-813-6350
In stock
NSN: 5331-00-813-6350
FSC Code: 5331
MPN: LS462926

5331-00-171-6527 (LS4634-16)

NIIN: 00-171-6527
In stock
NSN: 5331-00-171-6527
FSC Code: 5331
MPN: LS463416

5331-01-009-9802 (LS4634-6)

NIIN: 01-009-9802
In stock
NSN: 5331-01-009-9802
FSC Code: 5331
MPN: LS46346

5331-00-585-7272 (LS4565-6)

NIIN: 00-585-7272
In stock
NSN: 5331-00-585-7272
FSC Code: 5331
MPN: LS45656

5331-00-585-7270 (LS4628-12)

NIIN: 00-585-7270
In stock
NSN: 5331-00-585-7270
FSC Code: 5331
MPN: LS462812

5331-01-071-3998 (LS4565-113)

NIIN: 01-071-3998
In stock
NSN: 5331-01-071-3998
FSC Code: 5331
MPN: LS4565113

5331-01-509-2400 (850000101-R11-118)

NIIN: 01-509-2400
In stock
NSN: 5331-01-509-2400
FSC Code: 5331
MPN: 850000101R11118

5331-12-352-8668 (850.197.4)

NIIN: 12-352-8668
In stock
NSN: 5331-12-352-8668
FSC Code: 5331
MPN: 8501974

5331-12-340-8798 (850.013.4)

NIIN: 12-340-8798
In stock
NSN: 5331-12-340-8798
FSC Code: 5331
MPN: 8500134

5331-12-331-1432 (850.004.4)

NIIN: 12-331-1432
In stock
NSN: 5331-12-331-1432
FSC Code: 5331
MPN: 8500044

5331-12-324-8453 (850.089.4)

NIIN: 12-324-8453
In stock
NSN: 5331-12-324-8453
FSC Code: 5331
MPN: 8500894

5331-12-351-8645 (8699970920)

NIIN: 12-351-8645
In stock
NSN: 5331-12-351-8645
FSC Code: 5331
MPN: 8699970920

5331-12-331-1434 (850.064.4)

NIIN: 12-331-1434
In stock
NSN: 5331-12-331-1434
FSC Code: 5331
MPN: 8500644

5331-12-331-1433 (850.065.4)

NIIN: 12-331-1433
In stock
NSN: 5331-12-331-1433
FSC Code: 5331
MPN: 8500654

5331-12-331-1437 (850.010.4)

NIIN: 12-331-1437
In stock
NSN: 5331-12-331-1437
FSC Code: 5331
MPN: 8500104

5331-12-331-1435 (850.021.4)

NIIN: 12-331-1435
In stock
NSN: 5331-12-331-1435
FSC Code: 5331
MPN: 8500214

5331-12-340-8786 (850.011.4)

NIIN: 12-340-8786
In stock
NSN: 5331-12-340-8786
FSC Code: 5331
MPN: 8500114

5331-01-442-5362 (8499-1)

NIIN: 01-442-5362
In stock
NSN: 5331-01-442-5362
FSC Code: 5331
MPN: 84991

5331-01-327-5507 (LS35340-2)

NIIN: 01-327-5507
In stock
NSN: 5331-01-327-5507
FSC Code: 5331
MPN: LS353402