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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.

5331-01-381-1547 (95602/54)

NIIN: 01-381-1547
In stock
NSN: 5331-01-381-1547
FSC Code: 5331
MPN: 9560254

5331-01-415-9097 (95602/0149)

NIIN: 01-415-9097
In stock
NSN: 5331-01-415-9097
FSC Code: 5331
MPN: 956020149

5331-01-381-1909 (95602/75)

NIIN: 01-381-1909
In stock
NSN: 5331-01-381-1909
FSC Code: 5331
MPN: 9560275

5331-01-397-4273 (95602/0094)

NIIN: 01-397-4273
In stock
NSN: 5331-01-397-4273
FSC Code: 5331
MPN: 956020094

5331-01-381-2785 (95602/18)

NIIN: 01-381-2785
In stock
NSN: 5331-01-381-2785
FSC Code: 5331
MPN: 9560218

5331-01-381-2808 (95602/15)

NIIN: 01-381-2808
In stock
NSN: 5331-01-381-2808
FSC Code: 5331
MPN: 9560215

5331-01-415-9120 (95602/147)

NIIN: 01-415-9120
In stock
NSN: 5331-01-415-9120
FSC Code: 5331
MPN: 95602147

5331-01-415-9103 (95602/138)

NIIN: 01-415-9103
In stock
NSN: 5331-01-415-9103
FSC Code: 5331
MPN: 95602138

5331-01-415-9088 (95602/0153)

NIIN: 01-415-9088
In stock
NSN: 5331-01-415-9088
FSC Code: 5331
MPN: 956020153

5331-01-397-8184 (95602/0095)

NIIN: 01-397-8184
In stock
NSN: 5331-01-397-8184
FSC Code: 5331
MPN: 956020095

5331-01-415-9084 (95602/0152)

NIIN: 01-415-9084
In stock
NSN: 5331-01-415-9084
FSC Code: 5331
MPN: 956020152

5331-01-415-9706 (95602/142)

NIIN: 01-415-9706
In stock
NSN: 5331-01-415-9706
FSC Code: 5331
MPN: 95602142

5331-01-415-9118 (95602/140)

NIIN: 01-415-9118
In stock
NSN: 5331-01-415-9118
FSC Code: 5331
MPN: 95602140

5331-01-415-9098 (95602/0141)

NIIN: 01-415-9098
In stock
NSN: 5331-01-415-9098
FSC Code: 5331
MPN: 956020141

5331-01-397-4275 (95602/0017)

NIIN: 01-397-4275
In stock
NSN: 5331-01-397-4275
FSC Code: 5331
MPN: 956020017

5331-01-374-2325 (MS9955-113)

NIIN: 01-374-2325
In stock
NSN: 5331-01-374-2325
FSC Code: 5331
MPN: MS9955113

5331-01-530-2024 (9559K23)

NIIN: 01-530-2024
In stock
NSN: 5331-01-530-2024
FSC Code: 5331
MPN: 9559K23

5331-01-491-6826 (955991-5)

NIIN: 01-491-6826
In stock
NSN: 5331-01-491-6826
FSC Code: 5331
MPN: 9559915

5331-01-388-0953 (955976-6)

NIIN: 01-388-0953
In stock
NSN: 5331-01-388-0953
FSC Code: 5331
MPN: 9559766

5331-01-399-4659 (955979-0)

NIIN: 01-399-4659
In stock
NSN: 5331-01-399-4659
FSC Code: 5331
MPN: 9559790

5331-01-494-9588 (9557K459)

NIIN: 01-494-9588
In stock
NSN: 5331-01-494-9588
FSC Code: 5331
MPN: 9557K459

5331-01-521-8985 (9557K488)

NIIN: 01-521-8985
In stock
NSN: 5331-01-521-8985
FSC Code: 5331
MPN: 9557K488

5331-01-513-6966 (9557K482)

NIIN: 01-513-6966
In stock
NSN: 5331-01-513-6966
FSC Code: 5331
MPN: 9557K482

5331-01-546-8154 (9557K3)

NIIN: 01-546-8154
In stock
NSN: 5331-01-546-8154
FSC Code: 5331
MPN: 9557K3

5331-01-546-8151 (9557K158)

NIIN: 01-546-8151
In stock
NSN: 5331-01-546-8151
FSC Code: 5331
MPN: 9557K158

5331-01-538-8545 (9557K281)

NIIN: 01-538-8545
In stock
NSN: 5331-01-538-8545
FSC Code: 5331
MPN: 9557K281

5331-01-559-4421 (9557K129)

NIIN: 01-559-4421
In stock
NSN: 5331-01-559-4421
FSC Code: 5331
MPN: 9557K129

5331-01-559-8354 (9557K376)

NIIN: 01-559-8354
In stock
NSN: 5331-01-559-8354
FSC Code: 5331
MPN: 9557K376

5331-01-504-3444 (9557K121)

NIIN: 01-504-3444
In stock
NSN: 5331-01-504-3444
FSC Code: 5331
MPN: 9557K121

5331-01-515-6263 (953519-10)

NIIN: 01-515-6263
In stock
NSN: 5331-01-515-6263
FSC Code: 5331
MPN: 95351910

5331-01-502-9406 (95210009-01)

NIIN: 01-502-9406
In stock
NSN: 5331-01-502-9406
FSC Code: 5331
MPN: 9521000901

5331-01-513-8942 (950-410)

NIIN: 01-513-8942
In stock
NSN: 5331-01-513-8942
FSC Code: 5331
MPN: 950410

5331-01-469-1036 (95032-243)

NIIN: 01-469-1036
In stock
NSN: 5331-01-469-1036
FSC Code: 5331
MPN: 95032243

5331-01-513-6825 (950-180)

NIIN: 01-513-6825
In stock
NSN: 5331-01-513-6825
FSC Code: 5331
MPN: 950180

5331-01-521-3293 (9-500574)

NIIN: 01-521-3293
In stock
NSN: 5331-01-521-3293
FSC Code: 5331
MPN: 9500574

5331-01-418-1058 (94-D-285-30)

NIIN: 01-418-1058
In stock
NSN: 5331-01-418-1058
FSC Code: 5331
MPN: 94D28530

5331-01-419-2461 (94-D-281ITEM14CP)

NIIN: 01-419-2461
In stock
NSN: 5331-01-419-2461
FSC Code: 5331
MPN: 94D281ITEM14CP

5331-01-418-1056 (94-D-285-27)

NIIN: 01-418-1056
In stock
NSN: 5331-01-418-1056
FSC Code: 5331
MPN: 94D28527

5331-01-418-1053 (94-D-285-22)

NIIN: 01-418-1053
In stock
NSN: 5331-01-418-1053
FSC Code: 5331
MPN: 94D28522

5331-01-418-1055 (94-D-285-25)

NIIN: 01-418-1055
In stock
NSN: 5331-01-418-1055
FSC Code: 5331
MPN: 94D28525

5331-01-418-0639 (94-D-285-16)

NIIN: 01-418-0639
In stock
NSN: 5331-01-418-0639
FSC Code: 5331
MPN: 94D28516

5331-01-371-5121 (949962-5)

NIIN: 01-371-5121
In stock
NSN: 5331-01-371-5121
FSC Code: 5331
MPN: 9499625

5331-01-371-5123 (949750-4)

NIIN: 01-371-5123
In stock
NSN: 5331-01-371-5123
FSC Code: 5331
MPN: 9497504

5331-01-434-3762 (949659-7)

NIIN: 01-434-3762
In stock
NSN: 5331-01-434-3762
FSC Code: 5331
MPN: 9496597

5331-01-382-9908 (949140-1860)

NIIN: 01-382-9908
In stock
NSN: 5331-01-382-9908
FSC Code: 5331
MPN: 9491401860

5331-01-383-9098 (949060-0110)

NIIN: 01-383-9098
In stock
NSN: 5331-01-383-9098
FSC Code: 5331
MPN: 9490600110

5331-01-383-9949 (9487-134-000)

NIIN: 01-383-9949
In stock
NSN: 5331-01-383-9949
FSC Code: 5331
MPN: 9487134000

5331-01-384-0105 (9487-133-000)

NIIN: 01-384-0105
In stock
NSN: 5331-01-384-0105
FSC Code: 5331
MPN: 9487133000