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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.

5331-01-604-4469 (897135)

NIIN: 01-604-4469
In stock
NSN: 5331-01-604-4469
FSC Code: 5331
MPN: 897135

5331-01-604-4037 (25-845746)

NIIN: 01-604-4037
In stock
NSN: 5331-01-604-4037
FSC Code: 5331
MPN: 25845746

5331-01-604-1204 (6H1-43861-10-00)

NIIN: 01-604-1204
In stock
NSN: 5331-01-604-1204
FSC Code: 5331
MPN: 6H1438611000

5331-01-603-8543 (3030235)

NIIN: 01-603-8543
In stock
NSN: 5331-01-603-8543
FSC Code: 5331
MPN: 3030235

5331-01-604-8835 (3102646)

NIIN: 01-604-8835
In stock
NSN: 5331-01-604-8835
FSC Code: 5331
MPN: 3102646

5331-01-604-8715 (828/10310)

NIIN: 01-604-8715
In stock
NSN: 5331-01-604-8715
FSC Code: 5331
MPN: 82810310

5331-01-604-8550 (PD-99079-8)

NIIN: 01-604-8550
In stock
NSN: 5331-01-604-8550
FSC Code: 5331
MPN: PD990798

5331-01-604-8348 (XM123-022-5)

NIIN: 01-604-8348
In stock
NSN: 5331-01-604-8348
FSC Code: 5331
MPN: XM1230225

5331-01-604-6385 (880596517)

NIIN: 01-604-6385
In stock
NSN: 5331-01-604-6385
FSC Code: 5331
MPN: 880596517

5331-01-604-5935 (892077)

NIIN: 01-604-5935
In stock
NSN: 5331-01-604-5935
FSC Code: 5331
MPN: 892077

5331-01-604-5715 (857093)

NIIN: 01-604-5715
In stock
NSN: 5331-01-604-5715
FSC Code: 5331
MPN: 857093

5331-01-604-4612 (38780)

NIIN: 01-604-4612
In stock
NSN: 5331-01-604-4612
FSC Code: 5331
MPN: 38780

5331-01-604-4531 (884409)

NIIN: 01-604-4531
In stock
NSN: 5331-01-604-4531
FSC Code: 5331
MPN: 884409

5331-01-604-4075 (58030)

NIIN: 01-604-4075
In stock
NSN: 5331-01-604-4075
FSC Code: 5331
MPN: 58030

5331-01-604-3937 (D50-0020 ITEM 28)

NIIN: 01-604-3937
In stock
NSN: 5331-01-604-3937
FSC Code: 5331
MPN: D500020ITEM28

5331-01-604-1974 (HLM-099)

NIIN: 01-604-1974
In stock
NSN: 5331-01-604-1974
FSC Code: 5331
MPN: HLM099

5331-01-604-1445 (1232MS)

NIIN: 01-604-1445
In stock
NSN: 5331-01-604-1445
FSC Code: 5331
MPN: 1232MS

5331-01-603-9339 (2-113S383-70)

NIIN: 01-603-9339
In stock
NSN: 5331-01-603-9339
FSC Code: 5331
MPN: 2113S38370

5331-01-603-8391 (6P2-13769-00-00)

NIIN: 01-603-8391
In stock
NSN: 5331-01-603-8391
FSC Code: 5331
MPN: 6P2137690000

5331-01-604-4078 (857096)

NIIN: 01-604-4078
In stock
NSN: 5331-01-604-4078
FSC Code: 5331
MPN: 857096

5331-01-604-2687 (91302-ZV5-821)

NIIN: 01-604-2687
In stock
NSN: 5331-01-604-2687
FSC Code: 5331
MPN: 91302ZV5821

5331-01-604-1397 (6H1-43861-00-00)

NIIN: 01-604-1397
In stock
NSN: 5331-01-604-1397
FSC Code: 5331
MPN: 6H1438610000

5331-01-603-8702 (215X1107)

NIIN: 01-603-8702
In stock
NSN: 5331-01-603-8702
FSC Code: 5331
MPN: 215X1107

5331-01-603-8371 (61A-43864-00-00)

NIIN: 01-603-8371
In stock
NSN: 5331-01-603-8371
FSC Code: 5331
MPN: 61A438640000

5331-01-604-6785 (8OR.28X3.0)

NIIN: 01-604-6785
In stock
NSN: 5331-01-604-6785
FSC Code: 5331
MPN: 8OR28X30

5331-01-604-6705 (00-971886039-681)

NIIN: 01-604-6705
In stock
NSN: 5331-01-604-6705
FSC Code: 5331
MPN: 00971886039681

5331-01-604-5848 (851889)

NIIN: 01-604-5848
In stock
NSN: 5331-01-604-5848
FSC Code: 5331
MPN: 851889

5331-01-603-7370 (M22050-2-138)

NIIN: 01-603-7370
In stock
NSN: 5331-01-603-7370
FSC Code: 5331
MPN: M220502138

5331-01-604-7150 (LF-6709)

NIIN: 01-604-7150
In stock
NSN: 5331-01-604-7150
FSC Code: 5331
MPN: LF6709

5331-01-604-6962 (889828)

NIIN: 01-604-6962
In stock
NSN: 5331-01-604-6962
FSC Code: 5331
MPN: 889828

5331-01-604-5776 (895057)

NIIN: 01-604-5776
In stock
NSN: 5331-01-604-5776
FSC Code: 5331
MPN: 895057

5331-01-604-3935 (028-11145C013)

NIIN: 01-604-3935
In stock
NSN: 5331-01-604-3935
FSC Code: 5331
MPN: 02811145C013

5331-01-604-3322 (892267513)

NIIN: 01-604-3322
In stock
NSN: 5331-01-604-3322
FSC Code: 5331
MPN: 892267513

5331-01-604-2660 (560-007-360)

NIIN: 01-604-2660
In stock
NSN: 5331-01-604-2660
FSC Code: 5331
MPN: 560007360

5331-01-604-2659 (560-013-360)

NIIN: 01-604-2659
In stock
NSN: 5331-01-604-2659
FSC Code: 5331
MPN: 560013360

5331-01-604-5940 (857094)

NIIN: 01-604-5940
In stock
NSN: 5331-01-604-5940
FSC Code: 5331
MPN: 857094

5331-01-604-5772 (8M0005958)

NIIN: 01-604-5772
In stock
NSN: 5331-01-604-5772
FSC Code: 5331
MPN: 8M0005958

5331-01-604-2720 (6C5-1410B-00-00)

NIIN: 01-604-2720
In stock
NSN: 5331-01-604-2720
FSC Code: 5331
MPN: 6C51410B0000

5331-01-604-2622 (0742025)

NIIN: 01-604-2622
In stock
NSN: 5331-01-604-2622
FSC Code: 5331
MPN: 0742025

5331-01-604-2168 (J1400P011)

NIIN: 01-604-2168
In stock
NSN: 5331-01-604-2168
FSC Code: 5331
MPN: J1400P011

5331-01-603-8524 (576/145)

NIIN: 01-603-8524
In stock
NSN: 5331-01-603-8524
FSC Code: 5331
MPN: 576145

5331-01-603-8443 (NAS1611-131A)

NIIN: 01-603-8443
In stock
NSN: 5331-01-603-8443
FSC Code: 5331
MPN: NAS1611131A

5331-01-603-5775 (P321-13)

NIIN: 01-603-5775
In stock
NSN: 5331-01-603-5775
FSC Code: 5331
MPN: P32113

5331-01-603-5049 (032908)

NIIN: 01-603-5049
In stock
NSN: 5331-01-603-5049
FSC Code: 5331
MPN: 032908

5331-01-604-2677 (91358-ZY3-003)

NIIN: 01-604-2677
In stock
NSN: 5331-01-604-2677
FSC Code: 5331
MPN: 91358ZY3003

5331-01-604-2661 (560-012-360)

NIIN: 01-604-2661
In stock
NSN: 5331-01-604-2661
FSC Code: 5331
MPN: 560012360

5331-01-604-1138 (2-267S317-60)

NIIN: 01-604-1138
In stock
NSN: 5331-01-604-1138
FSC Code: 5331
MPN: 2267S31760

5331-01-603-6055 (26317)

NIIN: 01-603-6055
In stock
NSN: 5331-01-603-6055
FSC Code: 5331
MPN: 26317