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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.

5331-01-408-2824 (22000-2016)

NIIN: 01-408-2824
In stock
NSN: 5331-01-408-2824
FSC Code: 5331
MPN: 220002016

5331-01-382-4442 (22.5X2.64C8)

NIIN: 01-382-4442
In stock
NSN: 5331-01-382-4442
FSC Code: 5331
MPN: 225X264C8

5331-12-346-8748 (21X1.5-90SH)

NIIN: 12-346-8748
In stock
NSN: 5331-12-346-8748
FSC Code: 5331
MPN: 21X1590SH

5331-12-304-3687 (700429021000)

NIIN: 12-304-3687
In stock
NSN: 5331-12-304-3687
FSC Code: 5331
MPN: 700429021000

5331-01-563-6100 (219-8799)

NIIN: 01-563-6100
In stock
NSN: 5331-01-563-6100
FSC Code: 5331
MPN: 2198799

5331-01-485-0847 (P701-3457)

NIIN: 01-485-0847
In stock
NSN: 5331-01-485-0847
FSC Code: 5331
MPN: P7013457

5331-01-475-3934 (21920-0004)

NIIN: 01-475-3934
In stock
NSN: 5331-01-475-3934
FSC Code: 5331
MPN: 219200004

5331-01-475-3927 (21920-0003)

NIIN: 01-475-3927
In stock
NSN: 5331-01-475-3927
FSC Code: 5331
MPN: 219200003

5331-00-850-7585 (5H9205)

NIIN: 00-850-7585
In stock
NSN: 5331-00-850-7585
FSC Code: 5331
MPN: 5H9205

5331-00-593-1247 (5H-8848)

NIIN: 00-593-1247
In stock
NSN: 5331-00-593-1247
FSC Code: 5331
MPN: 5H8848

5331-00-710-9591 (5H8853)

NIIN: 00-710-9591
In stock
NSN: 5331-00-710-9591
FSC Code: 5331
MPN: 5H8853

5331-00-580-8967 (5H8624)

NIIN: 00-580-8967
In stock
NSN: 5331-00-580-8967
FSC Code: 5331
MPN: 5H8624

5331-00-580-1228 (5H8038)

NIIN: 00-580-1228
In stock
NSN: 5331-00-580-1228
FSC Code: 5331
MPN: 5H8038

5331-00-710-9584 (5H7153)

NIIN: 00-710-9584
In stock
NSN: 5331-00-710-9584
FSC Code: 5331
MPN: 5H7153

5331-00-713-8660 (5H7704)

NIIN: 00-713-8660
In stock
NSN: 5331-00-713-8660
FSC Code: 5331
MPN: 5H7704

5331-00-239-7654 (5H6733)

NIIN: 00-239-7654
In stock
NSN: 5331-00-239-7654
FSC Code: 5331
MPN: 5H6733

5331-00-541-2704 (5H5672)

NIIN: 00-541-2704
In stock
NSN: 5331-00-541-2704
FSC Code: 5331
MPN: 5H5672

5331-00-081-9701 (5H4081)

NIIN: 00-081-9701
In stock
NSN: 5331-00-081-9701
FSC Code: 5331
MPN: 5H4081

5331-01-160-4569 (5H4082)

NIIN: 01-160-4569
In stock
NSN: 5331-01-160-4569
FSC Code: 5331
MPN: 5H4082

5331-00-253-8180 (5H2824)

NIIN: 00-253-8180
In stock
NSN: 5331-00-253-8180
FSC Code: 5331
MPN: 5H2824

5331-01-308-2131 (5H1222)

NIIN: 01-308-2131
In stock
NSN: 5331-01-308-2131
FSC Code: 5331
MPN: 5H1222

5331-00-713-8605 (5H1039)

NIIN: 00-713-8605
In stock
NSN: 5331-00-713-8605
FSC Code: 5331
MPN: 5H1039

5331-01-370-8826 (955566-026)

NIIN: 01-370-8826
In stock
NSN: 5331-01-370-8826
FSC Code: 5331
MPN: 955566026

5331-00-194-5644 (5G2-4)

NIIN: 00-194-5644
In stock
NSN: 5331-00-194-5644
FSC Code: 5331
MPN: 5G24

5331-01-361-2965 (2-18687)

NIIN: 01-361-2965
In stock
NSN: 5331-01-361-2965
FSC Code: 5331
MPN: 218687

5331-01-462-0149 (218-517)

NIIN: 01-462-0149
In stock
NSN: 5331-01-462-0149
FSC Code: 5331
MPN: 218517

5331-01-348-3315 (218-5345)

NIIN: 01-348-3315
In stock
NSN: 5331-01-348-3315
FSC Code: 5331
MPN: 2185345

5331-01-348-3314 (218-5344)

NIIN: 01-348-3314
In stock
NSN: 5331-01-348-3314
FSC Code: 5331
MPN: 2185344

5331-00-863-5549 (5F0149)

NIIN: 00-863-5549
In stock
NSN: 5331-00-863-5549
FSC Code: 5331
MPN: 5F0149

5331-01-548-1025 (2180-9153)

NIIN: 01-548-1025
In stock
NSN: 5331-01-548-1025
FSC Code: 5331
MPN: 21809153

5331-01-186-5442 (5D9344)

NIIN: 01-186-5442
In stock
NSN: 5331-01-186-5442
FSC Code: 5331
MPN: 5D9344

5331-01-548-4521 (2180-9149A)

NIIN: 01-548-4521
In stock
NSN: 5331-01-548-4521
FSC Code: 5331
MPN: 21809149A

5331-01-209-8010 (5D6642)

NIIN: 01-209-8010
In stock
NSN: 5331-01-209-8010
FSC Code: 5331
MPN: 5D6642

5331-01-201-8683 (5D6294)

NIIN: 01-201-8683
In stock
NSN: 5331-01-201-8683
FSC Code: 5331
MPN: 5D6294

5331-01-079-4742 (5D5959)

NIIN: 01-079-4742
In stock
NSN: 5331-01-079-4742
FSC Code: 5331
MPN: 5D5959

5331-01-130-3359 (5D3-03870-6)

NIIN: 01-130-3359
In stock
NSN: 5331-01-130-3359
FSC Code: 5331
MPN: 5D3038706

5331-01-431-0505 (A3013096-8)

NIIN: 01-431-0505
In stock
NSN: 5331-01-431-0505
FSC Code: 5331
MPN: A30130968

5331-01-532-9545 (2178483/0)

NIIN: 01-532-9545
In stock
NSN: 5331-01-532-9545
FSC Code: 5331
MPN: 21784830

5331-01-532-9224 (2179098/0)

NIIN: 01-532-9224
In stock
NSN: 5331-01-532-9224
FSC Code: 5331
MPN: 21790980

5331-01-041-7547 (5CE7)

NIIN: 01-041-7547
In stock
NSN: 5331-01-041-7547
FSC Code: 5331
MPN: 5CE7

5331-01-532-9613 (2178498/0)

NIIN: 01-532-9613
In stock
NSN: 5331-01-532-9613
FSC Code: 5331
MPN: 21784980

5331-01-532-9555 (M1538-199010)

NIIN: 01-532-9555
In stock
NSN: 5331-01-532-9555
FSC Code: 5331
MPN: M1538199010

5331-01-467-1197 (2-177S604-70)

NIIN: 01-467-1197
In stock
NSN: 5331-01-467-1197
FSC Code: 5331
MPN: 2177S60470

5331-01-528-2010 (2-177-N0674-70)

NIIN: 01-528-2010
In stock
NSN: 5331-01-528-2010
FSC Code: 5331
MPN: 2177N067470

5331-01-396-1016 (803-2177917-02-32)

NIIN: 01-396-1016
In stock
NSN: 5331-01-396-1016
FSC Code: 5331
MPN: 80321779170232

5331-01-502-2601 (217779-11)

NIIN: 01-502-2601
In stock
NSN: 5331-01-502-2601
FSC Code: 5331
MPN: 21777911

5331-01-560-3268 (217-7324506ITEM47)

NIIN: 01-560-3268
In stock
NSN: 5331-01-560-3268
FSC Code: 5331
MPN: 2177324506ITEM47

5331-01-501-4293 (5331PL0658576)

NIIN: 01-501-4293
In stock
NSN: 5331-01-501-4293
FSC Code: 5331
MPN: 5331PL0658576