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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.

5331-00-800-7256 (4010-49)

NIIN: 00-800-7256
In stock
NSN: 5331-00-800-7256
FSC Code: 5331
MPN: 401049

5331-01-077-3822 (4010-32)

NIIN: 01-077-3822
In stock
NSN: 5331-01-077-3822
FSC Code: 5331
MPN: 401032

5331-01-283-8484 (4-010)

NIIN: 01-283-8484
In stock
NSN: 5331-01-283-8484
FSC Code: 5331
MPN: 4010

5331-00-075-4192 (400R795G02)

NIIN: 00-075-4192
In stock
NSN: 5331-00-075-4192
FSC Code: 5331
MPN: 400R795G02

5331-01-315-7286 (4007-59)

NIIN: 01-315-7286
In stock
NSN: 5331-01-315-7286
FSC Code: 5331
MPN: 400759

5331-01-569-1304 (131-0074)

NIIN: 01-569-1304
In stock
NSN: 5331-01-569-1304
FSC Code: 5331
MPN: 1310074

5331-01-447-9651 (130R098)

NIIN: 01-447-9651
In stock
NSN: 5331-01-447-9651
FSC Code: 5331
MPN: 130R098

5331-01-077-3821 (4006-32)

NIIN: 01-077-3821
In stock
NSN: 5331-01-077-3821
FSC Code: 5331
MPN: 400632

5331-01-360-8999 (MIL-DTL-25988/4)

NIIN: 01-360-8999
In stock
NSN: 5331-01-360-8999
FSC Code: 5331
MPN: MILDTL259884

5331-00-541-2123 (400594-2)

NIIN: 00-541-2123
In stock
NSN: 5331-00-541-2123
FSC Code: 5331
MPN: 4005942

5331-01-087-9553 (40050-009)

NIIN: 01-087-9553
In stock
NSN: 5331-01-087-9553
FSC Code: 5331
MPN: 40050009

5331-01-068-6375 (400-4674851ITEM23)

NIIN: 01-068-6375
In stock
NSN: 5331-01-068-6375
FSC Code: 5331
MPN: 4004674851ITEM23

5331-01-252-6411 (400424-0000)

NIIN: 01-252-6411
In stock
NSN: 5331-01-252-6411
FSC Code: 5331
MPN: 4004240000

5331-01-137-6889 (40-03309-02)

NIIN: 01-137-6889
In stock
NSN: 5331-01-137-6889
FSC Code: 5331
MPN: 400330902

5331-01-206-7850 (4003-27)

NIIN: 01-206-7850
In stock
NSN: 5331-01-206-7850
FSC Code: 5331
MPN: 400327

5331-01-206-7851 (4003-34)

NIIN: 01-206-7851
In stock
NSN: 5331-01-206-7851
FSC Code: 5331
MPN: 400334

5331-00-088-6476 (400-313-110)

NIIN: 00-088-6476
In stock
NSN: 5331-00-088-6476
FSC Code: 5331
MPN: 400313110

5331-00-088-6472 (400-312-924)

NIIN: 00-088-6472
In stock
NSN: 5331-00-088-6472
FSC Code: 5331
MPN: 400312924

5331-00-088-6469 (400-312-908)

NIIN: 00-088-6469
In stock
NSN: 5331-00-088-6469
FSC Code: 5331
MPN: 400312908

5331-00-209-2854 (400-312-904)

NIIN: 00-209-2854
In stock
NSN: 5331-00-209-2854
FSC Code: 5331
MPN: 400312904

5331-01-378-3545 (130-6420)

NIIN: 01-378-3545
In stock
NSN: 5331-01-378-3545
FSC Code: 5331
MPN: 1306420

5331-01-342-0117 (13-0617-52)

NIIN: 01-342-0117
In stock
NSN: 5331-01-342-0117
FSC Code: 5331
MPN: 13061752

5331-01-342-4885 (13-0617-53)

NIIN: 01-342-4885
In stock
NSN: 5331-01-342-4885
FSC Code: 5331
MPN: 13061753

5331-01-412-7520 (13-0617-51)

NIIN: 01-412-7520
In stock
NSN: 5331-01-412-7520
FSC Code: 5331
MPN: 13061751

5331-01-359-8776 (13-0617-46)

NIIN: 01-359-8776
In stock
NSN: 5331-01-359-8776
FSC Code: 5331
MPN: 13061746

5331-01-455-7018 (13-0617-09)

NIIN: 01-455-7018
In stock
NSN: 5331-01-455-7018
FSC Code: 5331
MPN: 13061709

5331-01-041-5174 (400-221-35)

NIIN: 01-041-5174
In stock
NSN: 5331-01-041-5174
FSC Code: 5331
MPN: 40022135

5331-01-444-5220 (1305-016)

NIIN: 01-444-5220
In stock
NSN: 5331-01-444-5220
FSC Code: 5331
MPN: 1305016

5331-01-435-5024 (1305-016-4IN)

NIIN: 01-435-5024
In stock
NSN: 5331-01-435-5024
FSC Code: 5331
MPN: 13050164IN

5331-01-423-7086 (1305-030)

NIIN: 01-423-7086
In stock
NSN: 5331-01-423-7086
FSC Code: 5331
MPN: 1305030

5331-00-783-6815 (400-13-2-3-4IN)

NIIN: 00-783-6815
In stock
NSN: 5331-00-783-6815
FSC Code: 5331
MPN: 40013234IN

5331-00-783-6818 (400-11-9-16IN)

NIIN: 00-783-6818
In stock
NSN: 5331-00-783-6818
FSC Code: 5331
MPN: 40011916IN

5331-01-343-2662 (AMS-R-25988-147)

NIIN: 01-343-2662
In stock
NSN: 5331-01-343-2662
FSC Code: 5331
MPN: AMSR25988147

5331-01-343-2663 (C0130213000)

NIIN: 01-343-2663
In stock
NSN: 5331-01-343-2663
FSC Code: 5331
MPN: C0130213000

5331-01-494-7200 (130-21)

NIIN: 01-494-7200
In stock
NSN: 5331-01-494-7200
FSC Code: 5331
MPN: 13021

5331-01-563-4515 (130-1676)

NIIN: 01-563-4515
In stock
NSN: 5331-01-563-4515
FSC Code: 5331
MPN: 1301676

5331-01-155-1783 (4000-12)

NIIN: 01-155-1783
In stock
NSN: 5331-01-155-1783
FSC Code: 5331
MPN: 400012

5331-01-155-1784 (4000-10)

NIIN: 01-155-1784
In stock
NSN: 5331-01-155-1784
FSC Code: 5331
MPN: 400010

5331-01-464-3696 (130-000110-012)

NIIN: 01-464-3696
In stock
NSN: 5331-01-464-3696
FSC Code: 5331
MPN: 130000110012

5331-01-436-9567 (13/16ODX9/16IDX1/32THK)

NIIN: 01-436-9567
In stock
NSN: 5331-01-436-9567
FSC Code: 5331
MPN: 1316ODX916IDX132THK

5331-01-379-4149 (1-3/4X2-1/8X3/1)

NIIN: 01-379-4149
In stock
NSN: 5331-01-379-4149
FSC Code: 5331
MPN: 134X218X31

5331-01-433-0516 (13.95X2.62NBR70)

NIIN: 01-433-0516
In stock
NSN: 5331-01-433-0516
FSC Code: 5331
MPN: 1395X262NBR70

5331-00-903-7381 (400004-2)

NIIN: 00-903-7381
In stock
NSN: 5331-00-903-7381
FSC Code: 5331
MPN: 4000042

5331-00-916-2408 (4.8621INDX.103I)

NIIN: 00-916-2408
In stock
NSN: 5331-00-916-2408
FSC Code: 5331
MPN: 48621INDX103I

5331-01-057-6627 (3Y13-16)

NIIN: 01-057-6627
In stock
NSN: 5331-01-057-6627
FSC Code: 5331
MPN: 3Y1316

5331-01-394-6013 (12Y3J42000C)

NIIN: 01-394-6013
In stock
NSN: 5331-01-394-6013
FSC Code: 5331
MPN: 12Y3J42000C

5331-01-394-6408 (12Y3J42000C)

NIIN: 01-394-6408
In stock
NSN: 5331-01-394-6408
FSC Code: 5331
MPN: 12Y3J42000C

5331-01-481-3540 (SHA 70 EPD M 12X2SHA70EPDM)

NIIN: 01-481-3540
In stock
NSN: 5331-01-481-3540
FSC Code: 5331
MPN: SHA70EPDM12X2SHA70EPDM