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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.

5331-01-007-1602 (M25988/1-143)

NIIN: 01-007-1602
In stock
NSN: 5331-01-007-1602
FSC Code: 5331
MPN: M259881143

5331-01-010-2422 (M25988/1-140)

NIIN: 01-010-2422
In stock
NSN: 5331-01-010-2422
FSC Code: 5331
MPN: M259881140

5331-01-209-9421 (M25988/1-107)

NIIN: 01-209-9421
In stock
NSN: 5331-01-209-9421
FSC Code: 5331
MPN: M259881107

5331-01-331-6301 (M25988/1-106)

NIIN: 01-331-6301
In stock
NSN: 5331-01-331-6301
FSC Code: 5331
MPN: M259881106

5331-01-254-5427 (M25988/1-103)

NIIN: 01-254-5427
In stock
NSN: 5331-01-254-5427
FSC Code: 5331
MPN: M259881103

5331-01-136-5352 (M25988/1-050)

NIIN: 01-136-5352
In stock
NSN: 5331-01-136-5352
FSC Code: 5331
MPN: M259881050

5331-00-281-6936 (M25988/1-047)

NIIN: 00-281-6936
In stock
NSN: 5331-00-281-6936
FSC Code: 5331
MPN: M259881047

5331-00-820-6529 (M25988/1-108)

NIIN: 00-820-6529
In stock
NSN: 5331-00-820-6529
FSC Code: 5331
MPN: M259881108

5331-00-281-6931 (M25988/1-049)

NIIN: 00-281-6931
In stock
NSN: 5331-00-281-6931
FSC Code: 5331
MPN: M259881049

5331-00-279-9411 (M25988/1-039)

NIIN: 00-279-9411
In stock
NSN: 5331-00-279-9411
FSC Code: 5331
MPN: M259881039

5331-01-171-0606 (M25988/1-046)

NIIN: 01-171-0606
In stock
NSN: 5331-01-171-0606
FSC Code: 5331
MPN: M259881046

5331-01-129-3141 (M25988/1-002)

NIIN: 01-129-3141
In stock
NSN: 5331-01-129-3141
FSC Code: 5331
MPN: M259881002

5331-01-294-5984 (M25988/1-001)

NIIN: 01-294-5984
In stock
NSN: 5331-01-294-5984
FSC Code: 5331
MPN: M259881001

5331-20-002-8994 (863179-18-ITEM)

NIIN: 20-002-8994
In stock
NSN: 5331-20-002-8994
FSC Code: 5331
MPN: 86317918ITEM

5331-20-002-8998 (863179-17-ITEM)

NIIN: 20-002-8998
In stock
NSN: 5331-20-002-8998
FSC Code: 5331
MPN: 86317917ITEM

5331-01-494-0637 (863-000752)

NIIN: 01-494-0637
In stock
NSN: 5331-01-494-0637
FSC Code: 5331
MPN: 863000752

5331-01-494-0631 (863-000751)

NIIN: 01-494-0631
In stock
NSN: 5331-01-494-0631
FSC Code: 5331
MPN: 863000751

5331-01-481-1660 (863-000602)

NIIN: 01-481-1660
In stock
NSN: 5331-01-481-1660
FSC Code: 5331
MPN: 863000602

5331-01-365-1729 (861C983G01)

NIIN: 01-365-1729
In stock
NSN: 5331-01-365-1729
FSC Code: 5331
MPN: 861C983G01

5331-17-110-2143 (D-10027-A)

NIIN: 17-110-2143
In stock
NSN: 5331-17-110-2143
FSC Code: 5331
MPN: D10027A

5331-01-392-5753 (8602-21)

NIIN: 01-392-5753
In stock
NSN: 5331-01-392-5753
FSC Code: 5331
MPN: 860221

5331-01-323-1615 (M24231/9-011)

NIIN: 01-323-1615
In stock
NSN: 5331-01-323-1615
FSC Code: 5331
MPN: M242319011

5331-00-406-7228 (M2379-7)

NIIN: 00-406-7228
In stock
NSN: 5331-00-406-7228
FSC Code: 5331
MPN: M23797

5331-12-375-3018 (8600-016-12-221000)

NIIN: 12-375-3018
In stock
NSN: 5331-12-375-3018
FSC Code: 5331
MPN: 860001612221000

5331-12-375-2980 (8600-016-14-093000)

NIIN: 12-375-2980
In stock
NSN: 5331-12-375-2980
FSC Code: 5331
MPN: 860001614093000

5331-01-466-4377 (A6689.224.114)

NIIN: 01-466-4377
In stock
NSN: 5331-01-466-4377
FSC Code: 5331
MPN: A6689224114

5331-17-104-0075 (858979-8)

NIIN: 17-104-0075
In stock
NSN: 5331-17-104-0075
FSC Code: 5331
MPN: 8589798

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