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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.

5331-01-432-3930 (6990481-2)

NIIN: 01-432-3930
In stock
NSN: 5331-01-432-3930
FSC Code: 5331
MPN: 69904812

5331-01-432-3927 (6990481-5)

NIIN: 01-432-3927
In stock
NSN: 5331-01-432-3927
FSC Code: 5331
MPN: 69904815

5331-01-492-0280 (69890-121)

NIIN: 01-492-0280
In stock
NSN: 5331-01-492-0280
FSC Code: 5331
MPN: 69890121

5331-01-329-1885 (D71460)

NIIN: 01-329-1885
In stock
NSN: 5331-01-329-1885
FSC Code: 5331
MPN: D71460

5331-01-249-9553 (D71437)

NIIN: 01-249-9553
In stock
NSN: 5331-01-249-9553
FSC Code: 5331
MPN: D71437

5331-00-860-2586 (D70342)

NIIN: 00-860-2586
In stock
NSN: 5331-00-860-2586
FSC Code: 5331
MPN: D70342

5331-01-166-1579 (D-67500-97)

NIIN: 01-166-1579
In stock
NSN: 5331-01-166-1579
FSC Code: 5331
MPN: D6750097

5331-01-308-7358 (D-67500-5)

NIIN: 01-308-7358
In stock
NSN: 5331-01-308-7358
FSC Code: 5331
MPN: D675005

5331-00-890-5781 (D-67500-24)

NIIN: 00-890-5781
In stock
NSN: 5331-00-890-5781
FSC Code: 5331
MPN: D6750024

5331-01-263-1082 (D-67500-96)

NIIN: 01-263-1082
In stock
NSN: 5331-01-263-1082
FSC Code: 5331
MPN: D6750096

5331-01-175-6751 (D-67500-30)

NIIN: 01-175-6751
In stock
NSN: 5331-01-175-6751
FSC Code: 5331
MPN: D6750030

5331-01-268-2686 (D-67500-38)

NIIN: 01-268-2686
In stock
NSN: 5331-01-268-2686
FSC Code: 5331
MPN: D6750038

5331-01-205-4252 (D-67500-24)

NIIN: 01-205-4252
In stock
NSN: 5331-01-205-4252
FSC Code: 5331
MPN: D6750024

5331-01-277-0937 (D-67500-23)

NIIN: 01-277-0937
In stock
NSN: 5331-01-277-0937
FSC Code: 5331
MPN: D6750023

5331-01-277-0935 (D-67500-20)

NIIN: 01-277-0935
In stock
NSN: 5331-01-277-0935
FSC Code: 5331
MPN: D6750020

5331-01-268-1245 (D-67500-28)

NIIN: 01-268-1245
In stock
NSN: 5331-01-268-1245
FSC Code: 5331
MPN: D6750028

5331-01-021-9042 (D-67500-12)

NIIN: 01-021-9042
In stock
NSN: 5331-01-021-9042
FSC Code: 5331
MPN: D6750012

5331-00-488-6103 (D-67500-14)

NIIN: 00-488-6103
In stock
NSN: 5331-00-488-6103
FSC Code: 5331
MPN: D6750014

5331-01-263-1083 (D-67500-100)

NIIN: 01-263-1083
In stock
NSN: 5331-01-263-1083
FSC Code: 5331
MPN: D67500100

5331-01-137-6284 (D661-1213-12)

NIIN: 01-137-6284
In stock
NSN: 5331-01-137-6284
FSC Code: 5331
MPN: D661121312

5331-00-870-0298 (D64218)

NIIN: 00-870-0298
In stock
NSN: 5331-00-870-0298
FSC Code: 5331
MPN: D64218

5331-01-330-2900 (D-623-6-4IN)

NIIN: 01-330-2900
In stock
NSN: 5331-01-330-2900
FSC Code: 5331
MPN: D62364IN

5331-01-330-2901 (D-623-6-4IN)

NIIN: 01-330-2901
In stock
NSN: 5331-01-330-2901
FSC Code: 5331
MPN: D62364IN

5331-01-304-2345 (D60Z-6571-A)

NIIN: 01-304-2345
In stock
NSN: 5331-01-304-2345
FSC Code: 5331
MPN: D60Z6571A

5331-01-358-8204 (69702POR7)

NIIN: 01-358-8204
In stock
NSN: 5331-01-358-8204
FSC Code: 5331
MPN: 69702POR7

5331-01-294-8031 (D59202)

NIIN: 01-294-8031
In stock
NSN: 5331-01-294-8031
FSC Code: 5331
MPN: D59202

5331-00-146-2802 (D580)

NIIN: 00-146-2802
In stock
NSN: 5331-00-146-2802
FSC Code: 5331
MPN: D580

5331-01-146-1191 (D-584)

NIIN: 01-146-1191
In stock
NSN: 5331-01-146-1191
FSC Code: 5331
MPN: D584

5331-00-146-2795 (D579)

NIIN: 00-146-2795
In stock
NSN: 5331-00-146-2795
FSC Code: 5331
MPN: D579

5331-00-146-2803 (D578)

NIIN: 00-146-2803
In stock
NSN: 5331-00-146-2803
FSC Code: 5331
MPN: D578

5331-01-334-9566 (D-5705)

NIIN: 01-334-9566
In stock
NSN: 5331-01-334-9566
FSC Code: 5331
MPN: D5705

5331-01-130-0477 (D56443)

NIIN: 01-130-0477
In stock
NSN: 5331-01-130-0477
FSC Code: 5331
MPN: D56443

5331-01-318-6756 (D-5611)

NIIN: 01-318-6756
In stock
NSN: 5331-01-318-6756
FSC Code: 5331
MPN: D5611

5331-00-870-0245 (D54611)

NIIN: 00-870-0245
In stock
NSN: 5331-00-870-0245
FSC Code: 5331
MPN: D54611

5331-01-550-6739 (6-964V0747-75)

NIIN: 01-550-6739
In stock
NSN: 5331-01-550-6739
FSC Code: 5331
MPN: 6964V074775

5331-01-328-4151 (D-512-6-3IN)

NIIN: 01-328-4151
In stock
NSN: 5331-01-328-4151
FSC Code: 5331
MPN: D51263IN

5331-01-257-4787 (D4ZZ7A248-A)

NIIN: 01-257-4787
In stock
NSN: 5331-01-257-4787
FSC Code: 5331
MPN: D4ZZ7A248A

5331-00-870-0224 (D49286)

NIIN: 00-870-0224
In stock
NSN: 5331-00-870-0224
FSC Code: 5331
MPN: D49286

5331-01-274-8077 (D49923)

NIIN: 01-274-8077
In stock
NSN: 5331-01-274-8077
FSC Code: 5331
MPN: D49923

5331-00-426-3714 (D49285)

NIIN: 00-426-3714
In stock
NSN: 5331-00-426-3714
FSC Code: 5331
MPN: D49285

5331-01-259-7479 (D-483463-868Y-1.50IN)

NIIN: 01-259-7479
In stock
NSN: 5331-01-259-7479
FSC Code: 5331
MPN: D483463868Y150IN

5331-01-324-3392 (D473814)

NIIN: 01-324-3392
In stock
NSN: 5331-01-324-3392
FSC Code: 5331
MPN: D473814

5331-01-130-6122 (D452SLEG6)

NIIN: 01-130-6122
In stock
NSN: 5331-01-130-6122
FSC Code: 5331
MPN: D452SLEG6

5331-01-274-9733 (D41750-8)

NIIN: 01-274-9733
In stock
NSN: 5331-01-274-9733
FSC Code: 5331
MPN: D417508

5331-01-274-9732 (D41750-27)

NIIN: 01-274-9732
In stock
NSN: 5331-01-274-9732
FSC Code: 5331
MPN: D4175027

5331-01-318-2280 (D-4007-33-915)

NIIN: 01-318-2280
In stock
NSN: 5331-01-318-2280
FSC Code: 5331
MPN: D400733915

5331-01-146-6054 (D-3908-11)

NIIN: 01-146-6054
In stock
NSN: 5331-01-146-6054
FSC Code: 5331
MPN: D390811

5331-01-277-2193 (D-39)

NIIN: 01-277-2193
In stock
NSN: 5331-01-277-2193
FSC Code: 5331
MPN: D39