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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.

5331-01-540-2357 (LL-H59-1567)

NIIN: 01-540-2357
In stock
NSN: 5331-01-540-2357
FSC Code: 5331
MPN: LLH591567

5331-00-974-8644 (44993WR62)

NIIN: 00-974-8644
In stock
NSN: 5331-00-974-8644
FSC Code: 5331
MPN: 44993WR62

5331-01-311-2670 (449-7303)

NIIN: 01-311-2670
In stock
NSN: 5331-01-311-2670
FSC Code: 5331
MPN: 4497303

5331-01-524-4307 (155G6122)

NIIN: 01-524-4307
In stock
NSN: 5331-01-524-4307
FSC Code: 5331
MPN: 155G6122

5331-01-550-8139 (155-771)

NIIN: 01-550-8139
In stock
NSN: 5331-01-550-8139
FSC Code: 5331
MPN: 155771

5331-01-550-8133 (155-777)

NIIN: 01-550-8133
In stock
NSN: 5331-01-550-8133
FSC Code: 5331
MPN: 155777

5331-01-550-8141 (155-760)

NIIN: 01-550-8141
In stock
NSN: 5331-01-550-8141
FSC Code: 5331
MPN: 155760

5331-01-550-8130 (155-747)

NIIN: 01-550-8130
In stock
NSN: 5331-01-550-8130
FSC Code: 5331
MPN: 155747

5331-01-550-8129 (155-745)

NIIN: 01-550-8129
In stock
NSN: 5331-01-550-8129
FSC Code: 5331
MPN: 155745

5331-01-550-8119 (155-708)

NIIN: 01-550-8119
In stock
NSN: 5331-01-550-8119
FSC Code: 5331
MPN: 155708

5331-01-455-7367 (1557052-30)

NIIN: 01-455-7367
In stock
NSN: 5331-01-455-7367
FSC Code: 5331
MPN: 155705230

5331-01-455-7358 (1557052-29)

NIIN: 01-455-7358
In stock
NSN: 5331-01-455-7358
FSC Code: 5331
MPN: 155705229

5331-00-147-3323 (4487C564)

NIIN: 00-147-3323
In stock
NSN: 5331-00-147-3323
FSC Code: 5331
MPN: 4487C564

5331-00-381-8661 (4490000-1)

NIIN: 00-381-8661
In stock
NSN: 5331-00-381-8661
FSC Code: 5331
MPN: 44900001

5331-01-345-0052 (A/B33-25)

NIIN: 01-345-0052
In stock
NSN: 5331-01-345-0052
FSC Code: 5331
MPN: AB3325

5331-01-546-1720 (155-2592)

NIIN: 01-546-1720
In stock
NSN: 5331-01-546-1720
FSC Code: 5331
MPN: 1552592

5331-01-382-8955 (VT-904-70-0R)

NIIN: 01-382-8955
In stock
NSN: 5331-01-382-8955
FSC Code: 5331
MPN: VT904700R

5331-00-974-7517 (447GC148)

NIIN: 00-974-7517
In stock
NSN: 5331-00-974-7517
FSC Code: 5331
MPN: 447GC148

5331-01-372-2824 (MIL-R-83248/1-024)

NIIN: 01-372-2824
In stock
NSN: 5331-01-372-2824
FSC Code: 5331
MPN: MILR832481024

5331-01-370-6918 (1551AS125-15)

NIIN: 01-370-6918
In stock
NSN: 5331-01-370-6918
FSC Code: 5331
MPN: 1551AS12515

5331-01-532-8232 (155175A1)

NIIN: 01-532-8232
In stock
NSN: 5331-01-532-8232
FSC Code: 5331
MPN: 155175A1

5331-01-542-7188 (15511-96660)

NIIN: 01-542-7188
In stock
NSN: 5331-01-542-7188
FSC Code: 5331
MPN: 1551196660

5331-00-598-9058 (446GC225)

NIIN: 00-598-9058
In stock
NSN: 5331-00-598-9058
FSC Code: 5331
MPN: 446GC225

5331-01-311-6970 (446GC1195)

NIIN: 01-311-6970
In stock
NSN: 5331-01-311-6970
FSC Code: 5331
MPN: 446GC1195

5331-00-974-7514 (446GC175)

NIIN: 00-974-7514
In stock
NSN: 5331-00-974-7514
FSC Code: 5331
MPN: 446GC175

5331-01-121-8326 (446GC1225)

NIIN: 01-121-8326
In stock
NSN: 5331-01-121-8326
FSC Code: 5331
MPN: 446GC1225

5331-01-382-4076 (H-1143-BPC220)

NIIN: 01-382-4076
In stock
NSN: 5331-01-382-4076
FSC Code: 5331
MPN: H1143BPC220

5331-99-736-6014 (200/447/5575)

NIIN: 99-736-6014
In stock
NSN: 5331-99-736-6014
FSC Code: 5331
MPN: 2004475575

5331-99-052-0903 (200/341/5575)

NIIN: 99-052-0903
In stock
NSN: 5331-99-052-0903
FSC Code: 5331
MPN: 2003415575

5331-99-663-5416 (200/433/1670)

NIIN: 99-663-5416
In stock
NSN: 5331-99-663-5416
FSC Code: 5331
MPN: 2004331670

5331-01-506-0865 (PL0975-1.XLS)

NIIN: 01-506-0865
In stock
NSN: 5331-01-506-0865
FSC Code: 5331
MPN: PL09751XLS

5331-01-506-0859 (PL0975-1.XLS)

NIIN: 01-506-0859
In stock
NSN: 5331-01-506-0859
FSC Code: 5331
MPN: PL09751XLS

5331-01-411-7933 (154B3206)

NIIN: 01-411-7933
In stock
NSN: 5331-01-411-7933
FSC Code: 5331
MPN: 154B3206

5331-01-506-0854 (PL0975-1.XLS)

NIIN: 01-506-0854
In stock
NSN: 5331-01-506-0854
FSC Code: 5331
MPN: PL09751XLS

5331-01-380-2606 (154B3626)

NIIN: 01-380-2606
In stock
NSN: 5331-01-380-2606
FSC Code: 5331
MPN: 154B3626

5331-15-143-2855 (154B2597)

NIIN: 15-143-2855
In stock
NSN: 5331-15-143-2855
FSC Code: 5331
MPN: 154B2597

5331-01-506-0867 (PL0975-1.XLS)

NIIN: 01-506-0867
In stock
NSN: 5331-01-506-0867
FSC Code: 5331
MPN: PL09751XLS

5331-01-524-2678 (845-6800704-074)

NIIN: 01-524-2678
In stock
NSN: 5331-01-524-2678
FSC Code: 5331
MPN: 8456800704074

5331-01-506-0856 (PL0975-1.XLS)

NIIN: 01-506-0856
In stock
NSN: 5331-01-506-0856
FSC Code: 5331
MPN: PL09751XLS

5331-01-506-9119 (154-8741)

NIIN: 01-506-9119
In stock
NSN: 5331-01-506-9119
FSC Code: 5331
MPN: 1548741

5331-01-532-8240 (154859A1)

NIIN: 01-532-8240
In stock
NSN: 5331-01-532-8240
FSC Code: 5331
MPN: 154859A1

5331-01-532-8238 (154829A1)

NIIN: 01-532-8238
In stock
NSN: 5331-01-532-8238
FSC Code: 5331
MPN: 154829A1

5331-01-532-8234 (154776A1)

NIIN: 01-532-8234
In stock
NSN: 5331-01-532-8234
FSC Code: 5331
MPN: 154776A1

5331-01-532-5732 (154-7159)

NIIN: 01-532-5732
In stock
NSN: 5331-01-532-5732
FSC Code: 5331
MPN: 1547159

5331-01-532-8246 (154679A1)

NIIN: 01-532-8246
In stock
NSN: 5331-01-532-8246
FSC Code: 5331
MPN: 154679A1

5331-00-500-1800 (4457005-60)

NIIN: 00-500-1800
In stock
NSN: 5331-00-500-1800
FSC Code: 5331
MPN: 445700560

5331-01-389-6966 (154587-6.95)

NIIN: 01-389-6966
In stock
NSN: 5331-01-389-6966
FSC Code: 5331
MPN: 154587695

5331-00-580-5323 (4455763PC12)

NIIN: 00-580-5323
In stock
NSN: 5331-00-580-5323
FSC Code: 5331
MPN: 4455763PC12