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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.

5331-00-916-8359 (A224TH1058)

NIIN: 00-916-8359
In stock
NSN: 5331-00-916-8359
FSC Code: 5331
MPN: A224TH1058

5331-01-133-0884 (A-22444-21)

NIIN: 01-133-0884
In stock
NSN: 5331-01-133-0884
FSC Code: 5331
MPN: A2244421

5331-00-476-7721 (A222)

NIIN: 00-476-7721
In stock
NSN: 5331-00-476-7721
FSC Code: 5331
MPN: A222

5331-00-003-9309 (A221SR723-70)

NIIN: 00-003-9309
In stock
NSN: 5331-00-003-9309
FSC Code: 5331
MPN: A221SR72370

5331-00-086-2584 (A218)

NIIN: 00-086-2584
In stock
NSN: 5331-00-086-2584
FSC Code: 5331
MPN: A218

5331-01-076-4829 (A-217)

NIIN: 01-076-4829
In stock
NSN: 5331-01-076-4829
FSC Code: 5331
MPN: A217

5331-01-340-8177 (537531-4)

NIIN: 01-340-8177
In stock
NSN: 5331-01-340-8177
FSC Code: 5331
MPN: 5375314

5331-01-385-2750 (537531-19)

NIIN: 01-385-2750
In stock
NSN: 5331-01-385-2750
FSC Code: 5331
MPN: 53753119

5331-00-843-1689 (A215)

NIIN: 00-843-1689
In stock
NSN: 5331-00-843-1689
FSC Code: 5331
MPN: A215

5331-01-457-6399 (5-374N602)

NIIN: 01-457-6399
In stock
NSN: 5331-01-457-6399
FSC Code: 5331
MPN: 5374N602

5331-01-105-9286 (A21300)

NIIN: 01-105-9286
In stock
NSN: 5331-01-105-9286
FSC Code: 5331
MPN: A21300

5331-00-258-7473 (A21301)

NIIN: 00-258-7473
In stock
NSN: 5331-00-258-7473
FSC Code: 5331
MPN: A21301

5331-01-027-5096 (A211AN123971)

NIIN: 01-027-5096
In stock
NSN: 5331-01-027-5096
FSC Code: 5331
MPN: A211AN123971

5331-01-318-4566 (A20611-1IN)

NIIN: 01-318-4566
In stock
NSN: 5331-01-318-4566
FSC Code: 5331
MPN: A206111IN

5331-01-523-5418 (5-361V747-75)

NIIN: 01-523-5418
In stock
NSN: 5331-01-523-5418
FSC Code: 5331
MPN: 5361V74775

5331-01-308-4237 (A200SR-8IN)

NIIN: 01-308-4237
In stock
NSN: 5331-01-308-4237
FSC Code: 5331
MPN: A200SR8IN

5331-01-308-4238 (A200SR-8IN)

NIIN: 01-308-4238
In stock
NSN: 5331-01-308-4238
FSC Code: 5331
MPN: A200SR8IN

5331-01-310-3889 (A200SR-8IN)

NIIN: 01-310-3889
In stock
NSN: 5331-01-310-3889
FSC Code: 5331
MPN: A200SR8IN

5331-01-435-4765 (53601-94)

NIIN: 01-435-4765
In stock
NSN: 5331-01-435-4765
FSC Code: 5331
MPN: 5360194

5331-01-309-8467 (A200SR-8IN)

NIIN: 01-309-8467
In stock
NSN: 5331-01-309-8467
FSC Code: 5331
MPN: A200SR8IN

5331-00-202-1293 (A19958)

NIIN: 00-202-1293
In stock
NSN: 5331-00-202-1293
FSC Code: 5331
MPN: A19958

5331-00-807-4236 (A1-9270)

NIIN: 00-807-4236
In stock
NSN: 5331-00-807-4236
FSC Code: 5331
MPN: A19270

5331-00-724-1837 (A19057-4)

NIIN: 00-724-1837
In stock
NSN: 5331-00-724-1837
FSC Code: 5331
MPN: A190574

5331-01-425-3494 (534A0313H01)

NIIN: 01-425-3494
In stock
NSN: 5331-01-425-3494
FSC Code: 5331
MPN: 534A0313H01

5331-01-197-6305 (A18218)

NIIN: 01-197-6305
In stock
NSN: 5331-01-197-6305
FSC Code: 5331
MPN: A18218

5331-01-526-1713 (5-343E3609-70)

NIIN: 01-526-1713
In stock
NSN: 5331-01-526-1713
FSC Code: 5331
MPN: 5343E360970

5331-00-236-6566 (A18163)

NIIN: 00-236-6566
In stock
NSN: 5331-00-236-6566
FSC Code: 5331
MPN: A18163

5331-01-237-6680 (A180-554)

NIIN: 01-237-6680
In stock
NSN: 5331-01-237-6680
FSC Code: 5331
MPN: A180554

5331-01-222-6927 (A180-254)

NIIN: 01-222-6927
In stock
NSN: 5331-01-222-6927
FSC Code: 5331
MPN: A180254

5331-01-287-4816 (A180-143)

NIIN: 01-287-4816
In stock
NSN: 5331-01-287-4816
FSC Code: 5331
MPN: A180143

5331-01-287-4813 (A180-230)

NIIN: 01-287-4813
In stock
NSN: 5331-01-287-4813
FSC Code: 5331
MPN: A180230

5331-01-223-4425 (A180-259)

NIIN: 01-223-4425
In stock
NSN: 5331-01-223-4425
FSC Code: 5331
MPN: A180259

5331-00-640-9158 (A180-159)

NIIN: 00-640-9158
In stock
NSN: 5331-00-640-9158
FSC Code: 5331
MPN: A180159

5331-01-287-4822 (A180-137)

NIIN: 01-287-4822
In stock
NSN: 5331-01-287-4822
FSC Code: 5331
MPN: A180137

5331-01-287-4815 (A180-139)

NIIN: 01-287-4815
In stock
NSN: 5331-01-287-4815
FSC Code: 5331
MPN: A180139

5331-01-287-4818 (A180-130)

NIIN: 01-287-4818
In stock
NSN: 5331-01-287-4818
FSC Code: 5331
MPN: A180130

5331-01-287-4817 (A180-126)

NIIN: 01-287-4817
In stock
NSN: 5331-01-287-4817
FSC Code: 5331
MPN: A180126

5331-01-004-7231 (A180-129)

NIIN: 01-004-7231
In stock
NSN: 5331-01-004-7231
FSC Code: 5331
MPN: A180129

5331-01-307-1799 (A18012)

NIIN: 01-307-1799
In stock
NSN: 5331-01-307-1799
FSC Code: 5331
MPN: A18012

5331-01-004-7228 (A180-122CP)

NIIN: 01-004-7228
In stock
NSN: 5331-01-004-7228
FSC Code: 5331
MPN: A180122CP

5331-00-641-3405 (A180-124)

NIIN: 00-641-3405
In stock
NSN: 5331-00-641-3405
FSC Code: 5331
MPN: A180124

5331-01-004-7227 (A180-119)

NIIN: 01-004-7227
In stock
NSN: 5331-01-004-7227
FSC Code: 5331
MPN: A180119

5331-01-126-4547 (A180-003-2)

NIIN: 01-126-4547
In stock
NSN: 5331-01-126-4547
FSC Code: 5331
MPN: A1800032

5331-01-189-3630 (A17994)

NIIN: 01-189-3630
In stock
NSN: 5331-01-189-3630
FSC Code: 5331
MPN: A17994

5331-01-126-0844 (A180-003-3)

NIIN: 01-126-0844
In stock
NSN: 5331-01-126-0844
FSC Code: 5331
MPN: A1800033

5331-00-808-4060 (A17993)

NIIN: 00-808-4060
In stock
NSN: 5331-00-808-4060
FSC Code: 5331
MPN: A17993

5331-00-808-4059 (A17992)

NIIN: 00-808-4059
In stock
NSN: 5331-00-808-4059
FSC Code: 5331
MPN: A17992

5331-00-220-2128 (A17612PC9)

NIIN: 00-220-2128
In stock
NSN: 5331-00-220-2128
FSC Code: 5331
MPN: A17612PC9