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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.

5331-00-875-9119 (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

5331-00-003-0882 (S8057R315)

NIIN: 00-003-0882
In stock
NSN: 5331-00-003-0882
FSC Code: 5331
MPN: S8057R315

5331-00-412-9717 (S8057M180)

NIIN: 00-412-9717
In stock
NSN: 5331-00-412-9717
FSC Code: 5331
MPN: S8057M180

5331-00-223-9981 (S8057M112)

NIIN: 00-223-9981
In stock
NSN: 5331-00-223-9981
FSC Code: 5331
MPN: S8057M112

5331-00-061-8672 (S8057R123)

NIIN: 00-061-8672
In stock
NSN: 5331-00-061-8672
FSC Code: 5331
MPN: S8057R123

5331-00-584-9739 (S8057R203)

NIIN: 00-584-9739
In stock
NSN: 5331-00-584-9739
FSC Code: 5331
MPN: S8057R203

5331-00-171-5625 (S8057K9)

NIIN: 00-171-5625
In stock
NSN: 5331-00-171-5625
FSC Code: 5331
MPN: S8057K9

5331-00-819-2711 (S8057R104)

NIIN: 00-819-2711
In stock
NSN: 5331-00-819-2711
FSC Code: 5331
MPN: S8057R104

5331-00-958-5068 (S8057R169)

NIIN: 00-958-5068
In stock
NSN: 5331-00-958-5068
FSC Code: 5331
MPN: S8057R169

5331-00-465-6681 (S8057K290)

NIIN: 00-465-6681
In stock
NSN: 5331-00-465-6681
FSC Code: 5331
MPN: S8057K290

5331-00-171-5648 (S8057K165)

NIIN: 00-171-5648
In stock
NSN: 5331-00-171-5648
FSC Code: 5331
MPN: S8057K165

5331-00-171-5650 (S8057K153)

NIIN: 00-171-5650
In stock
NSN: 5331-00-171-5650
FSC Code: 5331
MPN: S8057K153

5331-00-240-4062 (S8057BH238)

NIIN: 00-240-4062
In stock
NSN: 5331-00-240-4062
FSC Code: 5331
MPN: S8057BH238

5331-00-171-6530 (S8057K121)

NIIN: 00-171-6530
In stock
NSN: 5331-00-171-6530
FSC Code: 5331
MPN: S8057K121

5331-00-937-5210 (S8057K138)

NIIN: 00-937-5210
In stock
NSN: 5331-00-937-5210
FSC Code: 5331
MPN: S8057K138

5331-00-285-8563 (S8057K133)

NIIN: 00-285-8563
In stock
NSN: 5331-00-285-8563
FSC Code: 5331
MPN: S8057K133

5331-00-285-8560 (S8057K136)

NIIN: 00-285-8560
In stock
NSN: 5331-00-285-8560
FSC Code: 5331
MPN: S8057K136

5331-00-935-1936 (S8057K105)

NIIN: 00-935-1936
In stock
NSN: 5331-00-935-1936
FSC Code: 5331
MPN: S8057K105