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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.

5331-01-586-8139 (855426)

NIIN: 01-586-8139
In stock
NSN: 5331-01-586-8139
FSC Code: 5331
MPN: 855426

5331-01-586-8039 (62700)

NIIN: 01-586-8039
In stock
NSN: 5331-01-586-8039
FSC Code: 5331
MPN: 62700

5331-01-587-4556 (2602723C1)

NIIN: 01-587-4556
In stock
NSN: 5331-01-587-4556
FSC Code: 5331
MPN: 2602723C1

5331-01-587-2911 (6296E39-ITEM14)

NIIN: 01-587-2911
In stock
NSN: 5331-01-587-2911
FSC Code: 5331
MPN: 6296E39ITEM14

5331-01-586-8063 (804536)

NIIN: 01-586-8063
In stock
NSN: 5331-01-586-8063
FSC Code: 5331
MPN: 804536

5331-01-586-7981 (67207)

NIIN: 01-586-7981
In stock
NSN: 5331-01-586-7981
FSC Code: 5331
MPN: 67207

5331-01-586-7516 (700-471-433)

NIIN: 01-586-7516
In stock
NSN: 5331-01-586-7516
FSC Code: 5331
MPN: 700471433

5331-01-586-5992 (820062)

NIIN: 01-586-5992
In stock
NSN: 5331-01-586-5992
FSC Code: 5331
MPN: 820062

5331-01-587-4571 (2602741C1)

NIIN: 01-587-4571
In stock
NSN: 5331-01-587-4571
FSC Code: 5331
MPN: 2602741C1

5331-01-587-4557 (2602724C1)

NIIN: 01-587-4557
In stock
NSN: 5331-01-587-4557
FSC Code: 5331
MPN: 2602724C1

5331-01-587-4062 (359877)

NIIN: 01-587-4062
In stock
NSN: 5331-01-587-4062
FSC Code: 5331
MPN: 359877

5331-01-587-3310 (171378933C)

NIIN: 01-587-3310
In stock
NSN: 5331-01-587-3310
FSC Code: 5331
MPN: 171378933C

5331-01-586-9041 (10207)

NIIN: 01-586-9041
In stock
NSN: 5331-01-586-9041
FSC Code: 5331
MPN: 10207

5331-01-586-8191 (48462)

NIIN: 01-586-8191
In stock
NSN: 5331-01-586-8191
FSC Code: 5331
MPN: 48462

5331-01-586-8083 (896523)

NIIN: 01-586-8083
In stock
NSN: 5331-01-586-8083
FSC Code: 5331
MPN: 896523

5331-01-586-7978 (67206001)

NIIN: 01-586-7978
In stock
NSN: 5331-01-586-7978
FSC Code: 5331
MPN: 67206001

5331-01-586-6355 (431-570)

NIIN: 01-586-6355
In stock
NSN: 5331-01-586-6355
FSC Code: 5331
MPN: 431570

5331-01-586-6288 (000 241 19501)

NIIN: 01-586-6288
In stock
NSN: 5331-01-586-6288
FSC Code: 5331
MPN: 00024119501

5331-01-587-4088 (GM41974)

NIIN: 01-587-4088
In stock
NSN: 5331-01-587-4088
FSC Code: 5331
MPN: GM41974

5331-01-587-4068 (359977)

NIIN: 01-587-4068
In stock
NSN: 5331-01-587-4068
FSC Code: 5331
MPN: 359977

5331-01-587-1833 (M25988/4-232)

NIIN: 01-587-1833
In stock
NSN: 5331-01-587-1833
FSC Code: 5331
MPN: M259884232

5331-01-586-8970 (805063)

NIIN: 01-586-8970
In stock
NSN: 5331-01-586-8970
FSC Code: 5331
MPN: 805063

5331-01-586-8075 (889316)

NIIN: 01-586-8075
In stock
NSN: 5331-01-586-8075
FSC Code: 5331
MPN: 889316

5331-01-586-7958 (45711)

NIIN: 01-586-7958
In stock
NSN: 5331-01-586-7958
FSC Code: 5331
MPN: 45711

5331-01-586-7512 (AS3581-475)

NIIN: 01-586-7512
In stock
NSN: 5331-01-586-7512
FSC Code: 5331
MPN: AS3581475

5331-01-586-4552 (Y49081-920 OXYGEN CLEAN)

NIIN: 01-586-4552
In stock
NSN: 5331-01-586-4552
FSC Code: 5331
MPN: Y49081920OXYGENCLEAN

5331-01-586-4554 (Y49081-924 OXYGEN CLEAN)

NIIN: 01-586-4554
In stock
NSN: 5331-01-586-4554
FSC Code: 5331
MPN: Y49081924OXYGENCLEAN

5331-01-586-8996 (883209)

NIIN: 01-586-8996
In stock
NSN: 5331-01-586-8996
FSC Code: 5331
MPN: 883209

5331-01-586-6313 (000 238 9501)

NIIN: 01-586-6313
In stock
NSN: 5331-01-586-6313
FSC Code: 5331
MPN: 0002389501

5331-01-586-4226 (B10851 ITEM 3CP)

NIIN: 01-586-4226
In stock
NSN: 5331-01-586-4226
FSC Code: 5331
MPN: B10851ITEM3CP

5331-01-587-4253 (40006834+000)

NIIN: 01-587-4253
In stock
NSN: 5331-01-587-4253
FSC Code: 5331
MPN: 40006834000

5331-01-587-1042 (2-329E0803-70)

NIIN: 01-587-1042
In stock
NSN: 5331-01-587-1042
FSC Code: 5331
MPN: 2329E080370

5331-01-586-8058 (804840)

NIIN: 01-586-8058
In stock
NSN: 5331-01-586-8058
FSC Code: 5331
MPN: 804840

5331-01-586-8105 (11332)

NIIN: 01-586-8105
In stock
NSN: 5331-01-586-8105
FSC Code: 5331
MPN: 11332

5331-01-586-7991 (831985)

NIIN: 01-586-7991
In stock
NSN: 5331-01-586-7991
FSC Code: 5331
MPN: 831985

5331-01-586-7665 (30-0166)

NIIN: 01-586-7665
In stock
NSN: 5331-01-586-7665
FSC Code: 5331
MPN: 300166

5331-01-586-7272 (241)

NIIN: 01-586-7272
In stock
NSN: 5331-01-586-7272
FSC Code: 5331
MPN: 241

5331-01-586-4299 (749392-11)

NIIN: 01-586-4299
In stock
NSN: 5331-01-586-4299
FSC Code: 5331
MPN: 74939211

5331-01-586-4266 (749392-2)

NIIN: 01-586-4266
In stock
NSN: 5331-01-586-4266
FSC Code: 5331
MPN: 7493922

5331-01-586-4298 (749392-10)

NIIN: 01-586-4298
In stock
NSN: 5331-01-586-4298
FSC Code: 5331
MPN: 74939210

5331-01-587-4078 (359319)

NIIN: 01-587-4078
In stock
NSN: 5331-01-587-4078
FSC Code: 5331
MPN: 359319

5331-01-587-1318 (3163713)

NIIN: 01-587-1318
In stock
NSN: 5331-01-587-1318
FSC Code: 5331
MPN: 3163713

5331-01-586-9969 (A6195891-2)

NIIN: 01-586-9969
In stock
NSN: 5331-01-586-9969
FSC Code: 5331
MPN: A61958912

5331-01-586-8099 (896524)

NIIN: 01-586-8099
In stock
NSN: 5331-01-586-8099
FSC Code: 5331
MPN: 896524

5331-01-586-8076 (25-62702 1)

NIIN: 01-586-8076
In stock
NSN: 5331-01-586-8076
FSC Code: 5331
MPN: 25627021

5331-01-586-8038 (823683)

NIIN: 01-586-8038
In stock
NSN: 5331-01-586-8038
FSC Code: 5331
MPN: 823683

5331-01-586-6434 (AS-568B-011-70FS)

NIIN: 01-586-6434
In stock
NSN: 5331-01-586-6434
FSC Code: 5331
MPN: AS568B01170FS

5331-01-586-5855 (00081659N)

NIIN: 01-586-5855
In stock
NSN: 5331-01-586-5855
FSC Code: 5331
MPN: 00081659N