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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.

5331-01-437-9233 (SS-B790KLPS2-1IN-PC7)

NIIN: 01-437-9233
In stock
NSN: 5331-01-437-9233
FSC Code: 5331
MPN: SSB790KLPS21INPC7

5331-01-550-3451 (SSA925C050A)

NIIN: 01-550-3451
In stock
NSN: 5331-01-550-3451
FSC Code: 5331
MPN: SSA925C050A

5331-01-380-3461 (SS-91K-65TITEM21)

NIIN: 01-380-3461
In stock
NSN: 5331-01-380-3461
FSC Code: 5331
MPN: SS91K65TITEM21

5331-01-416-5439 (V190-8CP-K4-557)

NIIN: 01-416-5439
In stock
NSN: 5331-01-416-5439
FSC Code: 5331
MPN: V1908CPK4557

5331-01-353-1919 (SS850-244)

NIIN: 01-353-1919
In stock
NSN: 5331-01-353-1919
FSC Code: 5331
MPN: SS850244

5331-01-353-4493 (SS850-337)

NIIN: 01-353-4493
In stock
NSN: 5331-01-353-4493
FSC Code: 5331
MPN: SS850337

5331-01-353-1921 (SS850-151)

NIIN: 01-353-1921
In stock
NSN: 5331-01-353-1921
FSC Code: 5331
MPN: SS850151

5331-01-353-1920 (SS850-152)

NIIN: 01-353-1920
In stock
NSN: 5331-01-353-1920
FSC Code: 5331
MPN: SS850152

5331-01-378-7007 (SS-68TSW32P-JLK)

NIIN: 01-378-7007
In stock
NSN: 5331-01-378-7007
FSC Code: 5331
MPN: SS68TSW32PJLK

5331-01-381-1782 (SS-63TSW8TITEM12)

NIIN: 01-381-1782
In stock
NSN: 5331-01-381-1782
FSC Code: 5331
MPN: SS63TSW8TITEM12

5331-01-381-0817 (SS-68TSW32P-JLK)

NIIN: 01-381-0817
In stock
NSN: 5331-01-381-0817
FSC Code: 5331
MPN: SS68TSW32PJLK

5331-01-382-5917 (SS-68TSW32P-JLK)

NIIN: 01-382-5917
In stock
NSN: 5331-01-382-5917
FSC Code: 5331
MPN: SS68TSW32PJLK

5331-01-380-3439 (SS-671W20P-SLKITEM13)

NIIN: 01-380-3439
In stock
NSN: 5331-01-380-3439
FSC Code: 5331
MPN: SS671W20PSLKITEM13

5331-01-383-0086 (SS-62TE4-B-SLITEM13)

NIIN: 01-383-0086
In stock
NSN: 5331-01-383-0086
FSC Code: 5331
MPN: SS62TE4BSLITEM13

5331-01-380-4506 (SS-63TSW8TITEM13)

NIIN: 01-380-4506
In stock
NSN: 5331-01-380-4506
FSC Code: 5331
MPN: SS63TSW8TITEM13

5331-01-383-0087 (SS-62TE4-B-SLITEM12)

NIIN: 01-383-0087
In stock
NSN: 5331-01-383-0087
FSC Code: 5331
MPN: SS62TE4BSLITEM12

5331-01-385-9987 (SS3815/5)

NIIN: 01-385-9987
In stock
NSN: 5331-01-385-9987
FSC Code: 5331
MPN: SS38155

5331-01-494-0519 (SS3817-4)

NIIN: 01-494-0519
In stock
NSN: 5331-01-494-0519
FSC Code: 5331
MPN: SS38174

5331-01-405-9973 (SS350-337)

NIIN: 01-405-9973
In stock
NSN: 5331-01-405-9973
FSC Code: 5331
MPN: SS350337

5331-01-411-5218 (SS350-243)

NIIN: 01-411-5218
In stock
NSN: 5331-01-411-5218
FSC Code: 5331
MPN: SS350243

5331-01-369-8703 (SS-2400512-1)

NIIN: 01-369-8703
In stock
NSN: 5331-01-369-8703
FSC Code: 5331
MPN: SS24005121

5331-01-383-4369 (SS-2400506-1)

NIIN: 01-383-4369
In stock
NSN: 5331-01-383-4369
FSC Code: 5331
MPN: SS24005061

5331-01-488-5676 (SRV150-211)

NIIN: 01-488-5676
In stock
NSN: 5331-01-488-5676
FSC Code: 5331
MPN: SRV150211

5331-01-488-5687 (SRV150-67)

NIIN: 01-488-5687
In stock
NSN: 5331-01-488-5687
FSC Code: 5331
MPN: SRV15067

5331-01-488-5674 (SRV150-210)

NIIN: 01-488-5674
In stock
NSN: 5331-01-488-5674
FSC Code: 5331
MPN: SRV150210

5331-01-505-9394 (SPL28300275N103-70)

NIIN: 01-505-9394
In stock
NSN: 5331-01-505-9394
FSC Code: 5331
MPN: SPL28300275N10370

5331-98-206-3925 (SP726)

NIIN: 98-206-3925
In stock
NSN: 5331-98-206-3925
FSC Code: 5331
MPN: SP726

5331-25-152-7350 (SP-6335)

NIIN: 25-152-7350
In stock
NSN: 5331-25-152-7350
FSC Code: 5331
MPN: SP6335

5331-01-484-8574 (SP40032A)

NIIN: 01-484-8574
In stock
NSN: 5331-01-484-8574
FSC Code: 5331
MPN: SP40032A

5331-01-376-9710 (SP-37-9)

NIIN: 01-376-9710
In stock
NSN: 5331-01-376-9710
FSC Code: 5331
MPN: SP379

5331-01-377-7350 (SPRTK109)

NIIN: 01-377-7350
In stock
NSN: 5331-01-377-7350
FSC Code: 5331
MPN: SPRTK109

5331-01-376-9666 (SP-34-9)

NIIN: 01-376-9666
In stock
NSN: 5331-01-376-9666
FSC Code: 5331
MPN: SP349

5331-01-455-5909 (SP140-7)

NIIN: 01-455-5909
In stock
NSN: 5331-01-455-5909
FSC Code: 5331
MPN: SP1407

5331-01-491-1930 (SP140-27)

NIIN: 01-491-1930
In stock
NSN: 5331-01-491-1930
FSC Code: 5331
MPN: SP14027

5331-01-438-4752 (SP103-114)

NIIN: 01-438-4752
In stock
NSN: 5331-01-438-4752
FSC Code: 5331
MPN: SP103114

5331-98-206-3916 (SP0720)

NIIN: 98-206-3916
In stock
NSN: 5331-98-206-3916
FSC Code: 5331
MPN: SP0720

5331-01-385-7066 (SOR-4-BUNA)

NIIN: 01-385-7066
In stock
NSN: 5331-01-385-7066
FSC Code: 5331
MPN: SOR4BUNA

5331-01-384-2488 (SOR-67)

NIIN: 01-384-2488
In stock
NSN: 5331-01-384-2488
FSC Code: 5331
MPN: SOR67

5331-01-461-7036 (SOR-113)

NIIN: 01-461-7036
In stock
NSN: 5331-01-461-7036
FSC Code: 5331
MPN: SOR113

5331-01-486-2782 (SOR-27)

NIIN: 01-486-2782
In stock
NSN: 5331-01-486-2782
FSC Code: 5331
MPN: SOR27

5331-01-346-0276 (SO-NB-P32)

NIIN: 01-346-0276
In stock
NSN: 5331-01-346-0276
FSC Code: 5331
MPN: SONBP32

5331-25-150-2068 (W1014/27)

NIIN: 25-150-2068
In stock
NSN: 5331-25-150-2068
FSC Code: 5331
MPN: W101427

5331-25-150-2070 (W1014/27)

NIIN: 25-150-2070
In stock
NSN: 5331-25-150-2070
FSC Code: 5331
MPN: W101427

5331-01-388-1158 (SOR-113-BUNA)

NIIN: 01-388-1158
In stock
NSN: 5331-01-388-1158
FSC Code: 5331
MPN: SOR113BUNA

5331-01-346-0275 (SO-NA-P9)

NIIN: 01-346-0275
In stock
NSN: 5331-01-346-0275
FSC Code: 5331
MPN: SONAP9

5331-01-353-1776 (SO-NB-P18)

NIIN: 01-353-1776
In stock
NSN: 5331-01-353-1776
FSC Code: 5331
MPN: SONBP18

5331-01-422-5009 (SNS-4264-25010)

NIIN: 01-422-5009
In stock
NSN: 5331-01-422-5009
FSC Code: 5331
MPN: SNS426425010

5331-01-422-5005 (SNS-4263-8005)

NIIN: 01-422-5005
In stock
NSN: 5331-01-422-5005
FSC Code: 5331
MPN: SNS42638005