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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.

5331-00-964-4041 (S8171B30)

NIIN: 00-964-4041
In stock
NSN: 5331-00-964-4041
FSC Code: 5331
MPN: S8171B30

5331-00-171-5702 (S8171H15)

NIIN: 00-171-5702
In stock
NSN: 5331-00-171-5702
FSC Code: 5331
MPN: S8171H15

5331-00-813-9987 (S8171Y1)

NIIN: 00-813-9987
In stock
NSN: 5331-00-813-9987
FSC Code: 5331
MPN: S8171Y1

5331-00-582-1877 (S8171B5)

NIIN: 00-582-1877
In stock
NSN: 5331-00-582-1877
FSC Code: 5331
MPN: S8171B5

5331-00-614-5391 (S8171K8)

NIIN: 00-614-5391
In stock
NSN: 5331-00-614-5391
FSC Code: 5331
MPN: S8171K8

5331-01-423-7059 (CEC25992)

NIIN: 01-423-7059
In stock
NSN: 5331-01-423-7059
FSC Code: 5331
MPN: CEC25992

5331-00-663-6846 (S8171N17)

NIIN: 00-663-6846
In stock
NSN: 5331-00-663-6846
FSC Code: 5331
MPN: S8171N17

5331-00-576-5038 (S8171K14)

NIIN: 00-576-5038
In stock
NSN: 5331-00-576-5038
FSC Code: 5331
MPN: S8171K14

5331-00-582-1886 (S8171B26)

NIIN: 00-582-1886
In stock
NSN: 5331-00-582-1886
FSC Code: 5331
MPN: S8171B26

5331-00-114-0399 (S8171AP38)

NIIN: 00-114-0399
In stock
NSN: 5331-00-114-0399
FSC Code: 5331
MPN: S8171AP38

5331-00-313-0485 (S8171B20)

NIIN: 00-313-0485
In stock
NSN: 5331-00-313-0485
FSC Code: 5331
MPN: S8171B20

5331-00-297-6291 (S8171B16)

NIIN: 00-297-6291
In stock
NSN: 5331-00-297-6291
FSC Code: 5331
MPN: S8171B16

5331-00-726-4141 (S8171B10)

NIIN: 00-726-4141
In stock
NSN: 5331-00-726-4141
FSC Code: 5331
MPN: S8171B10

5331-00-894-9504 (S8171AV102)

NIIN: 00-894-9504
In stock
NSN: 5331-00-894-9504
FSC Code: 5331
MPN: S8171AV102

5331-00-958-8409 (S8171AV110)

NIIN: 00-958-8409
In stock
NSN: 5331-00-958-8409
FSC Code: 5331
MPN: S8171AV110

5331-00-913-2767 (S8171AU20)

NIIN: 00-913-2767
In stock
NSN: 5331-00-913-2767
FSC Code: 5331
MPN: S8171AU20

5331-00-903-7859 (S8171AV27)

NIIN: 00-903-7859
In stock
NSN: 5331-00-903-7859
FSC Code: 5331
MPN: S8171AV27

5331-00-875-9119 (S8171AU5)

NIIN: 00-875-9119
In stock
NSN: 5331-00-875-9119
FSC Code: 5331
MPN: S8171AU5

5331-00-351-6972 (S8171AL16)

NIIN: 00-351-6972
In stock
NSN: 5331-00-351-6972
FSC Code: 5331
MPN: S8171AL16

5331-00-922-3274 (S8171AK16P)

NIIN: 00-922-3274
In stock
NSN: 5331-00-922-3274
FSC Code: 5331
MPN: S8171AK16P

5331-00-967-2506 (S8171AP7)

NIIN: 00-967-2506
In stock
NSN: 5331-00-967-2506
FSC Code: 5331
MPN: S8171AP7

5331-01-025-6469 (S8171AE1)

NIIN: 01-025-6469
In stock
NSN: 5331-01-025-6469
FSC Code: 5331
MPN: S8171AE1

5331-01-149-7233 (S8171A29)

NIIN: 01-149-7233
In stock
NSN: 5331-01-149-7233
FSC Code: 5331
MPN: S8171A29

5331-00-883-2796 (S8171AL5)

NIIN: 00-883-2796
In stock
NSN: 5331-00-883-2796
FSC Code: 5331
MPN: S8171AL5

5331-00-033-4868 (S8171A5)

NIIN: 00-033-4868
In stock
NSN: 5331-00-033-4868
FSC Code: 5331
MPN: S8171A5

5331-00-684-7926 (S8171AD22)

NIIN: 00-684-7926
In stock
NSN: 5331-00-684-7926
FSC Code: 5331
MPN: S8171AD22

5331-01-024-9765 (S8171AE47)

NIIN: 01-024-9765
In stock
NSN: 5331-01-024-9765
FSC Code: 5331
MPN: S8171AE47

5331-00-883-2797 (S8171A110)

NIIN: 00-883-2797
In stock
NSN: 5331-00-883-2797
FSC Code: 5331
MPN: S8171A110

5331-00-599-3116 (S8171A102)

NIIN: 00-599-3116
In stock
NSN: 5331-00-599-3116
FSC Code: 5331
MPN: S8171A102

5331-01-169-2018 (S8171AC106)

NIIN: 01-169-2018
In stock
NSN: 5331-01-169-2018
FSC Code: 5331
MPN: S8171AC106

5331-00-033-4870 (S8171-8)

NIIN: 00-033-4870
In stock
NSN: 5331-00-033-4870
FSC Code: 5331
MPN: S81718

5331-00-033-4872 (S8171A27)

NIIN: 00-033-4872
In stock
NSN: 5331-00-033-4872
FSC Code: 5331
MPN: S8171A27

5331-00-171-5328 (S8171A14)

NIIN: 00-171-5328
In stock
NSN: 5331-00-171-5328
FSC Code: 5331
MPN: S8171A14

5331-00-297-6897 (S8171-2)

NIIN: 00-297-6897
In stock
NSN: 5331-00-297-6897
FSC Code: 5331
MPN: S81712

5331-00-033-4866 (S8171A2)

NIIN: 00-033-4866
In stock
NSN: 5331-00-033-4866
FSC Code: 5331
MPN: S8171A2

5331-00-033-4864 (S8171A1)

NIIN: 00-033-4864
In stock
NSN: 5331-00-033-4864
FSC Code: 5331
MPN: S8171A1

5331-00-297-6290 (S8171-3)

NIIN: 00-297-6290
In stock
NSN: 5331-00-297-6290
FSC Code: 5331
MPN: S81713

5331-00-618-1954 (S8171-112)

NIIN: 00-618-1954
In stock
NSN: 5331-00-618-1954
FSC Code: 5331
MPN: S8171112

5331-00-033-7401 (S8171-1)

NIIN: 00-033-7401
In stock
NSN: 5331-00-033-7401
FSC Code: 5331
MPN: S81711

5331-00-198-6180 (S810)

NIIN: 00-198-6180
In stock
NSN: 5331-00-198-6180
FSC Code: 5331
MPN: S810

5331-00-640-9719 (S8057L174)

NIIN: 00-640-9719
In stock
NSN: 5331-00-640-9719
FSC Code: 5331
MPN: S8057L174

5331-00-225-9058 (S8057R274)

NIIN: 00-225-9058
In stock
NSN: 5331-00-225-9058
FSC Code: 5331
MPN: S8057R274

5331-00-051-5655 (S8057R8)

NIIN: 00-051-5655
In stock
NSN: 5331-00-051-5655
FSC Code: 5331
MPN: S8057R8

5331-00-068-7767 (S8057R260)

NIIN: 00-068-7767
In stock
NSN: 5331-00-068-7767
FSC Code: 5331
MPN: S8057R260

5331-00-818-4343 (S8057R4)

NIIN: 00-818-4343
In stock
NSN: 5331-00-818-4343
FSC Code: 5331
MPN: S8057R4

5331-00-865-9732 (S8057V10)

NIIN: 00-865-9732
In stock
NSN: 5331-00-865-9732
FSC Code: 5331
MPN: S8057V10

5331-00-857-3750 (S8057K275)

NIIN: 00-857-3750
In stock
NSN: 5331-00-857-3750
FSC Code: 5331
MPN: S8057K275

5331-00-558-2388 (S8057R174)

NIIN: 00-558-2388
In stock
NSN: 5331-00-558-2388
FSC Code: 5331
MPN: S8057R174