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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.

5331-01-563-0217 (330967-1)

NIIN: 01-563-0217
In stock
NSN: 5331-01-563-0217
FSC Code: 5331
MPN: 3309671

5331-01-275-1864 (7282B)

NIIN: 01-275-1864
In stock
NSN: 5331-01-275-1864
FSC Code: 5331
MPN: 7282B

5331-01-207-1496 (7276-1.0IN)

NIIN: 01-207-1496
In stock
NSN: 5331-01-207-1496
FSC Code: 5331
MPN: 727610IN

5331-01-416-8879 (5-547S613-60)

NIIN: 01-416-8879
In stock
NSN: 5331-01-416-8879
FSC Code: 5331
MPN: 5547S61360

5331-00-004-5105 (72719-03X1PC23)

NIIN: 00-004-5105
In stock
NSN: 5331-00-004-5105
FSC Code: 5331
MPN: 7271903X1PC23

5331-00-004-5104 (72719-03X1PC20)

NIIN: 00-004-5104
In stock
NSN: 5331-00-004-5104
FSC Code: 5331
MPN: 7271903X1PC20

5331-01-550-1843 (33-0582)

NIIN: 01-550-1843
In stock
NSN: 5331-01-550-1843
FSC Code: 5331
MPN: 330582

5331-01-280-7498 (725P-2IN-12)

NIIN: 01-280-7498
In stock
NSN: 5331-01-280-7498
FSC Code: 5331
MPN: 725P2IN12

5331-01-278-1738 (725-89-5-00857-00)

NIIN: 01-278-1738
In stock
NSN: 5331-01-278-1738
FSC Code: 5331
MPN: 7258950085700

5331-01-338-6648 (725-89-5-00754-00)

NIIN: 01-338-6648
In stock
NSN: 5331-01-338-6648
FSC Code: 5331
MPN: 7258950075400

5331-01-304-1143 (72572A003)

NIIN: 01-304-1143
In stock
NSN: 5331-01-304-1143
FSC Code: 5331
MPN: 72572A003

5331-01-266-3854 (7255-264)

NIIN: 01-266-3854
In stock
NSN: 5331-01-266-3854
FSC Code: 5331
MPN: 7255264

5331-01-266-3853 (7255-264)

NIIN: 01-266-3853
In stock
NSN: 5331-01-266-3853
FSC Code: 5331
MPN: 7255264

5331-01-266-3855 (7255-264)

NIIN: 01-266-3855
In stock
NSN: 5331-01-266-3855
FSC Code: 5331
MPN: 7255264

5331-01-266-3852 (7255-264)

NIIN: 01-266-3852
In stock
NSN: 5331-01-266-3852
FSC Code: 5331
MPN: 7255264

5331-00-136-8693 (725-5073)

NIIN: 00-136-8693
In stock
NSN: 5331-00-136-8693
FSC Code: 5331
MPN: 7255073

5331-00-469-5321 (725-5016)

NIIN: 00-469-5321
In stock
NSN: 5331-00-469-5321
FSC Code: 5331
MPN: 7255016

5331-01-548-9367 (33-0271)

NIIN: 01-548-9367
In stock
NSN: 5331-01-548-9367
FSC Code: 5331
MPN: 330271

5331-00-192-0436 (725-1014)

NIIN: 00-192-0436
In stock
NSN: 5331-00-192-0436
FSC Code: 5331
MPN: 7251014

5331-00-599-0314 (725128-3)

NIIN: 00-599-0314
In stock
NSN: 5331-00-599-0314
FSC Code: 5331
MPN: 7251283

5331-01-306-0944 (725-08-5-00692-00)

NIIN: 01-306-0944
In stock
NSN: 5331-01-306-0944
FSC Code: 5331
MPN: 7250850069200

5331-01-306-0943 (725-08-5-02122-00)

NIIN: 01-306-0943
In stock
NSN: 5331-01-306-0943
FSC Code: 5331
MPN: 7250850212200

5331-01-126-0847 (725-038M-097)

NIIN: 01-126-0847
In stock
NSN: 5331-01-126-0847
FSC Code: 5331
MPN: 725038M097

5331-01-532-1808 (33-0082)

NIIN: 01-532-1808
In stock
NSN: 5331-01-532-1808
FSC Code: 5331
MPN: 330082

5331-01-460-2442 (33-00779)

NIIN: 01-460-2442
In stock
NSN: 5331-01-460-2442
FSC Code: 5331
MPN: 3300779

5331-01-277-6131 (7248952P001)

NIIN: 01-277-6131
In stock
NSN: 5331-01-277-6131
FSC Code: 5331
MPN: 7248952P001

5331-12-198-9625 (CVR-700429032000)

NIIN: 12-198-9625
In stock
NSN: 5331-12-198-9625
FSC Code: 5331
MPN: CVR700429032000

5331-01-393-5710 (32S01-0000BM-64)

NIIN: 01-393-5710
In stock
NSN: 5331-01-393-5710
FSC Code: 5331
MPN: 32S010000BM64

5331-99-759-4708 (GL-OS63NT)

NIIN: 99-759-4708
In stock
NSN: 5331-99-759-4708
FSC Code: 5331
MPN: GLOS63NT

5331-00-249-4354 (7242-20360)

NIIN: 00-249-4354
In stock
NSN: 5331-00-249-4354
FSC Code: 5331
MPN: 724220360

5331-00-261-4931 (7242-20460)

NIIN: 00-261-4931
In stock
NSN: 5331-00-261-4931
FSC Code: 5331
MPN: 724220460

5331-00-262-3655 (7242-20260)

NIIN: 00-262-3655
In stock
NSN: 5331-00-262-3655
FSC Code: 5331
MPN: 724220260

5331-00-262-3652 (7242-20200)

NIIN: 00-262-3652
In stock
NSN: 5331-00-262-3652
FSC Code: 5331
MPN: 724220200

5331-00-288-4528 (7242-20190)

NIIN: 00-288-4528
In stock
NSN: 5331-00-288-4528
FSC Code: 5331
MPN: 724220190

5331-00-261-4933 (7242-20170)

NIIN: 00-261-4933
In stock
NSN: 5331-00-261-4933
FSC Code: 5331
MPN: 724220170

5331-00-283-5156 (7242-20090)

NIIN: 00-283-5156
In stock
NSN: 5331-00-283-5156
FSC Code: 5331
MPN: 724220090

5331-00-261-4932 (7242-10660)

NIIN: 00-261-4932
In stock
NSN: 5331-00-261-4932
FSC Code: 5331
MPN: 724210660

5331-00-283-5153 (7242-10160)

NIIN: 00-283-5153
In stock
NSN: 5331-00-283-5153
FSC Code: 5331
MPN: 724210160

5331-00-249-4353 (7242-10540)

NIIN: 00-249-4353
In stock
NSN: 5331-00-249-4353
FSC Code: 5331
MPN: 724210540

5331-01-161-6040 (724-129)

NIIN: 01-161-6040
In stock
NSN: 5331-01-161-6040
FSC Code: 5331
MPN: 724129

5331-01-022-5629 (724-114)

NIIN: 01-022-5629
In stock
NSN: 5331-01-022-5629
FSC Code: 5331
MPN: 724114

5331-00-959-1044 (7241-104-1)

NIIN: 00-959-1044
In stock
NSN: 5331-00-959-1044
FSC Code: 5331
MPN: 72411041

5331-01-373-4776 (PL166D6310PT022)

NIIN: 01-373-4776
In stock
NSN: 5331-01-373-4776
FSC Code: 5331
MPN: PL166D6310PT022

5331-00-959-1046 (7241-104-2)

NIIN: 00-959-1046
In stock
NSN: 5331-00-959-1046
FSC Code: 5331
MPN: 72411042

5331-01-373-4777 (PL166D6310PT012)

NIIN: 01-373-4777
In stock
NSN: 5331-01-373-4777
FSC Code: 5331
MPN: PL166D6310PT012

5331-01-373-4778 (PL166D6310PT021)

NIIN: 01-373-4778
In stock
NSN: 5331-01-373-4778
FSC Code: 5331
MPN: PL166D6310PT021

5331-01-182-7535 (724-012)

NIIN: 01-182-7535
In stock
NSN: 5331-01-182-7535
FSC Code: 5331
MPN: 724012

5331-01-253-0403 (724-009-022)

NIIN: 01-253-0403
In stock
NSN: 5331-01-253-0403
FSC Code: 5331
MPN: 724009022