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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.

5331-00-275-3499 (H135-021)

NIIN: 00-275-3499
In stock
NSN: 5331-00-275-3499
FSC Code: 5331
MPN: H135021

5331-01-250-6729 (H135-17)

NIIN: 01-250-6729
In stock
NSN: 5331-01-250-6729
FSC Code: 5331
MPN: H13517

5331-01-313-4949 (H135-27)

NIIN: 01-313-4949
In stock
NSN: 5331-01-313-4949
FSC Code: 5331
MPN: H13527

5331-01-388-1289 (77-545-2-1113)

NIIN: 01-388-1289
In stock
NSN: 5331-01-388-1289
FSC Code: 5331
MPN: 7754521113

5331-01-313-4950 (H134-113)

NIIN: 01-313-4950
In stock
NSN: 5331-01-313-4950
FSC Code: 5331
MPN: H134113

5331-01-473-0865 (7-754-000137)

NIIN: 01-473-0865
In stock
NSN: 5331-01-473-0865
FSC Code: 5331
MPN: 7754000137

5331-01-470-1690 (7-754-000140)

NIIN: 01-470-1690
In stock
NSN: 5331-01-470-1690
FSC Code: 5331
MPN: 7754000140

5331-01-313-4948 (H134-14)

NIIN: 01-313-4948
In stock
NSN: 5331-01-313-4948
FSC Code: 5331
MPN: H13414

5331-01-470-1697 (7-754-000143)

NIIN: 01-470-1697
In stock
NSN: 5331-01-470-1697
FSC Code: 5331
MPN: 7754000143

5331-01-460-5562 (7-754-000110)

NIIN: 01-460-5562
In stock
NSN: 5331-01-460-5562
FSC Code: 5331
MPN: 7754000110

5331-01-473-0828 (7-754-000138)

NIIN: 01-473-0828
In stock
NSN: 5331-01-473-0828
FSC Code: 5331
MPN: 7754000138

5331-01-302-9885 (H125-276)

NIIN: 01-302-9885
In stock
NSN: 5331-01-302-9885
FSC Code: 5331
MPN: H125276

5331-00-979-5531 (H125-277)

NIIN: 00-979-5531
In stock
NSN: 5331-00-979-5531
FSC Code: 5331
MPN: H125277

5331-00-979-5524 (H125-286)

NIIN: 00-979-5524
In stock
NSN: 5331-00-979-5524
FSC Code: 5331
MPN: H125286

5331-00-979-5520 (H125-285)

NIIN: 00-979-5520
In stock
NSN: 5331-00-979-5520
FSC Code: 5331
MPN: H125285

5331-00-979-5541 (H125-157)

NIIN: 00-979-5541
In stock
NSN: 5331-00-979-5541
FSC Code: 5331
MPN: H125157

5331-00-979-5522 (H125-263)

NIIN: 00-979-5522
In stock
NSN: 5331-00-979-5522
FSC Code: 5331
MPN: H125263

5331-01-188-4612 (H1221)

NIIN: 01-188-4612
In stock
NSN: 5331-01-188-4612
FSC Code: 5331
MPN: H1221

5331-00-591-7980 (H10110)

NIIN: 00-591-7980
In stock
NSN: 5331-00-591-7980
FSC Code: 5331
MPN: H10110

5331-01-263-7830 (H10137-M)

NIIN: 01-263-7830
In stock
NSN: 5331-01-263-7830
FSC Code: 5331
MPN: H10137M

5331-01-313-5721 (H092-134)

NIIN: 01-313-5721
In stock
NSN: 5331-01-313-5721
FSC Code: 5331
MPN: H092134

5331-01-080-2928 (H-082662)

NIIN: 01-080-2928
In stock
NSN: 5331-01-080-2928
FSC Code: 5331
MPN: H082662

5331-01-432-3616 (77331000-DS-G-74893)

NIIN: 01-432-3616
In stock
NSN: 5331-01-432-3616
FSC Code: 5331
MPN: 77331000DSG74893

5331-01-299-3145 (H0504)

NIIN: 01-299-3145
In stock
NSN: 5331-01-299-3145
FSC Code: 5331
MPN: H0504

5331-01-299-3146 (H0505)

NIIN: 01-299-3146
In stock
NSN: 5331-01-299-3146
FSC Code: 5331
MPN: H0505

5331-01-333-2680 (H030109-00)

NIIN: 01-333-2680
In stock
NSN: 5331-01-333-2680
FSC Code: 5331
MPN: H03010900

5331-01-213-8228 (H021-26-116)

NIIN: 01-213-8228
In stock
NSN: 5331-01-213-8228
FSC Code: 5331
MPN: H02126116

5331-01-213-8227 (H021-25-026)

NIIN: 01-213-8227
In stock
NSN: 5331-01-213-8227
FSC Code: 5331
MPN: H02125026

5331-01-213-8226 (H021-25-013)

NIIN: 01-213-8226
In stock
NSN: 5331-01-213-8226
FSC Code: 5331
MPN: H02125013

5331-01-213-8222 (H021-20-004)

NIIN: 01-213-8222
In stock
NSN: 5331-01-213-8222
FSC Code: 5331
MPN: H02120004

5331-01-213-8223 (H021-20-077)

NIIN: 01-213-8223
In stock
NSN: 5331-01-213-8223
FSC Code: 5331
MPN: H02120077

5331-01-226-4523 (H-00635-1893)

NIIN: 01-226-4523
In stock
NSN: 5331-01-226-4523
FSC Code: 5331
MPN: H006351893

5331-01-226-4524 (H-00475-2375)

NIIN: 01-226-4524
In stock
NSN: 5331-01-226-4524
FSC Code: 5331
MPN: H004752375

5331-01-286-3125 (H/45112/2/1618)

NIIN: 01-286-3125
In stock
NSN: 5331-01-286-3125
FSC Code: 5331
MPN: H4511221618

5331-00-292-0526 (GYLC87)

NIIN: 00-292-0526
In stock
NSN: 5331-00-292-0526
FSC Code: 5331
MPN: GYLC87

5331-01-326-7443 (GW137000)

NIIN: 01-326-7443
In stock
NSN: 5331-01-326-7443
FSC Code: 5331
MPN: GW137000

5331-00-878-0706 (GV88-829-46-50)

NIIN: 00-878-0706
In stock
NSN: 5331-00-878-0706
FSC Code: 5331
MPN: GV888294650

5331-00-923-4590 (GV88-829-16-90)

NIIN: 00-923-4590
In stock
NSN: 5331-00-923-4590
FSC Code: 5331
MPN: GV888291690

5331-00-518-5510 (GV88-827-5HT)

NIIN: 00-518-5510
In stock
NSN: 5331-00-518-5510
FSC Code: 5331
MPN: GV888275HT

5331-99-949-7139 (770-949-7139)

NIIN: 99-949-7139
In stock
NSN: 5331-99-949-7139
FSC Code: 5331
MPN: 7709497139

5331-01-080-2233 (GV39-619-6-HT)

NIIN: 01-080-2233
In stock
NSN: 5331-01-080-2233
FSC Code: 5331
MPN: GV396196HT

5331-00-831-6551 (GV39-619-6-70)

NIIN: 00-831-6551
In stock
NSN: 5331-00-831-6551
FSC Code: 5331
MPN: GV39619670

5331-00-107-6492 (GV39-619-52-90)

NIIN: 00-107-6492
In stock
NSN: 5331-00-107-6492
FSC Code: 5331
MPN: GV396195290

5331-01-011-3102 (GV-39-619-6-PA)

NIIN: 01-011-3102
In stock
NSN: 5331-01-011-3102
FSC Code: 5331
MPN: GV396196PA

5331-00-193-5213 (GV39-619-4-70ITEM45)

NIIN: 00-193-5213
In stock
NSN: 5331-00-193-5213
FSC Code: 5331
MPN: GV39619470ITEM45

5331-01-253-9834 (GV-39-619-5-40)

NIIN: 01-253-9834
In stock
NSN: 5331-01-253-9834
FSC Code: 5331
MPN: GV39619540

5331-00-421-7969 (GV39-619-46S5)

NIIN: 00-421-7969
In stock
NSN: 5331-00-421-7969
FSC Code: 5331
MPN: GV3961946S5

5331-01-016-7547 (GV-39-619-25-HT)

NIIN: 01-016-7547
In stock
NSN: 5331-01-016-7547
FSC Code: 5331
MPN: GV3961925HT