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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.

5331-01-464-8549 (ST1000-012)

NIIN: 01-464-8549
In stock
NSN: 5331-01-464-8549
FSC Code: 5331
MPN: ST1000012

5331-01-398-9519 (ST051015CFM001)

NIIN: 01-398-9519
In stock
NSN: 5331-01-398-9519
FSC Code: 5331
MPN: ST051015CFM001

5331-01-464-8553 (ST1000-043)

NIIN: 01-464-8553
In stock
NSN: 5331-01-464-8553
FSC Code: 5331
MPN: ST1000043

5331-01-395-7878 (Y4JC45830B)

NIIN: 01-395-7878
In stock
NSN: 5331-01-395-7878
FSC Code: 5331
MPN: Y4JC45830B

5331-01-353-3465 (ST036710)

NIIN: 01-353-3465
In stock
NSN: 5331-01-353-3465
FSC Code: 5331
MPN: ST036710

5331-01-415-1280 (ST00219)

NIIN: 01-415-1280
In stock
NSN: 5331-01-415-1280
FSC Code: 5331
MPN: ST00219

5331-01-394-6014 (ST036765)

NIIN: 01-394-6014
In stock
NSN: 5331-01-394-6014
FSC Code: 5331
MPN: ST036765

5331-01-353-3467 (ST036709)

NIIN: 01-353-3467
In stock
NSN: 5331-01-353-3467
FSC Code: 5331
MPN: ST036709

5331-01-361-3146 (ST00286)

NIIN: 01-361-3146
In stock
NSN: 5331-01-361-3146
FSC Code: 5331
MPN: ST00286

5331-01-353-3466 (ST036731)

NIIN: 01-353-3466
In stock
NSN: 5331-01-353-3466
FSC Code: 5331
MPN: ST036731

5331-01-395-2807 (ST036721)

NIIN: 01-395-2807
In stock
NSN: 5331-01-395-2807
FSC Code: 5331
MPN: ST036721

5331-01-408-6475 (ST051010CFM005)

NIIN: 01-408-6475
In stock
NSN: 5331-01-408-6475
FSC Code: 5331
MPN: ST051010CFM005

5331-01-398-6580 (ST051040BFM001)

NIIN: 01-398-6580
In stock
NSN: 5331-01-398-6580
FSC Code: 5331
MPN: ST051040BFM001

5331-01-380-1620 (SS-L67TW24P-SLITEM12)

NIIN: 01-380-1620
In stock
NSN: 5331-01-380-1620
FSC Code: 5331
MPN: SSL67TW24PSLITEM12

5331-01-381-1804 (SS-L68TW32P-SLITEM13)

NIIN: 01-381-1804
In stock
NSN: 5331-01-381-1804
FSC Code: 5331
MPN: SSL68TW32PSLITEM13

5331-01-380-1382 (SS-L67TW24P-SLITEM13)

NIIN: 01-380-1382
In stock
NSN: 5331-01-380-1382
FSC Code: 5331
MPN: SSL67TW24PSLITEM13

5331-01-380-4498 (SS-L67TW20P-SLKITEM12)

NIIN: 01-380-4498
In stock
NSN: 5331-01-380-4498
FSC Code: 5331
MPN: SSL67TW20PSLKITEM12

5331-01-501-8502 (SSG-8156)

NIIN: 01-501-8502
In stock
NSN: 5331-01-501-8502
FSC Code: 5331
MPN: SSG8156

5331-01-452-7305 (SS-BCPA2-50)

NIIN: 01-452-7305
In stock
NSN: 5331-01-452-7305
FSC Code: 5331
MPN: SSBCPA250

5331-01-460-0763 (SS-B790KLPS2-.50IN-PC7)

NIIN: 01-460-0763
In stock
NSN: 5331-01-460-0763
FSC Code: 5331
MPN: SSB790KLPS250INPC7

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