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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.

5331-01-474-1858 (5P-5397)

NIIN: 01-474-1858
In stock
NSN: 5331-01-474-1858
FSC Code: 5331
MPN: 5P5397

5331-01-355-5150 (5P5819)

NIIN: 01-355-5150
In stock
NSN: 5331-01-355-5150
FSC Code: 5331
MPN: 5P5819

5331-01-473-5988 (5P4326)

NIIN: 01-473-5988
In stock
NSN: 5331-01-473-5988
FSC Code: 5331
MPN: 5P4326

5331-01-518-0635 (5P4932)

NIIN: 01-518-0635
In stock
NSN: 5331-01-518-0635
FSC Code: 5331
MPN: 5P4932

5331-01-543-3262 (5P5374)

NIIN: 01-543-3262
In stock
NSN: 5331-01-543-3262
FSC Code: 5331
MPN: 5P5374

5331-01-537-9448 (5P-4057)

NIIN: 01-537-9448
In stock
NSN: 5331-01-537-9448
FSC Code: 5331
MPN: 5P4057

5331-01-424-3524 (5P3863)

NIIN: 01-424-3524
In stock
NSN: 5331-01-424-3524
FSC Code: 5331
MPN: 5P3863

5331-01-567-0122 (5P-4889)

NIIN: 01-567-0122
In stock
NSN: 5331-01-567-0122
FSC Code: 5331
MPN: 5P4889

5331-01-473-6000 (5P1981)

NIIN: 01-473-6000
In stock
NSN: 5331-01-473-6000
FSC Code: 5331
MPN: 5P1981

5331-01-473-5985 (5P3903)

NIIN: 01-473-5985
In stock
NSN: 5331-01-473-5985
FSC Code: 5331
MPN: 5P3903

5331-01-421-3810 (5P-2931)

NIIN: 01-421-3810
In stock
NSN: 5331-01-421-3810
FSC Code: 5331
MPN: 5P2931

5331-01-474-2146 (5P-3864)

NIIN: 01-474-2146
In stock
NSN: 5331-01-474-2146
FSC Code: 5331
MPN: 5P3864

5331-01-432-1216 (5P3114)

NIIN: 01-432-1216
In stock
NSN: 5331-01-432-1216
FSC Code: 5331
MPN: 5P3114

5331-01-457-5784 (5P-2428)

NIIN: 01-457-5784
In stock
NSN: 5331-01-457-5784
FSC Code: 5331
MPN: 5P2428

5331-01-471-4095 (5P-1480)

NIIN: 01-471-4095
In stock
NSN: 5331-01-471-4095
FSC Code: 5331
MPN: 5P1480

5331-01-469-8235 (5P)

NIIN: 01-469-8235
In stock
NSN: 5331-01-469-8235
FSC Code: 5331
MPN: 5P

5331-01-368-6390 (CV152397D)

NIIN: 01-368-6390
In stock
NSN: 5331-01-368-6390
FSC Code: 5331
MPN: CV152397D

5331-00-065-0230 (AS43436)

NIIN: 00-065-0230
In stock
NSN: 5331-00-065-0230
FSC Code: 5331
MPN: AS43436

5331-00-065-0036 (AS43435)

NIIN: 00-065-0036
In stock
NSN: 5331-00-065-0036
FSC Code: 5331
MPN: AS43435

5331-01-139-6436 (AS43013-214)

NIIN: 01-139-6436
In stock
NSN: 5331-01-139-6436
FSC Code: 5331
MPN: AS43013214

5331-00-101-9352 (AS43013-249)

NIIN: 00-101-9352
In stock
NSN: 5331-00-101-9352
FSC Code: 5331
MPN: AS43013249

5331-01-139-6435 (AS43013-115)

NIIN: 01-139-6435
In stock
NSN: 5331-01-139-6435
FSC Code: 5331
MPN: AS43013115

5331-01-324-8278 (AS43013-046)

NIIN: 01-324-8278
In stock
NSN: 5331-01-324-8278
FSC Code: 5331
MPN: AS43013046

5331-01-387-6168 (5MMX340MM)

NIIN: 01-387-6168
In stock
NSN: 5331-01-387-6168
FSC Code: 5331
MPN: 5MMX340MM

5331-01-477-3326 (5MH126-944ITEM220)

NIIN: 01-477-3326
In stock
NSN: 5331-01-477-3326
FSC Code: 5331
MPN: 5MH126944ITEM220

5331-00-812-5284 (AS4004-912)

NIIN: 00-812-5284
In stock
NSN: 5331-00-812-5284
FSC Code: 5331
MPN: AS4004912

5331-00-936-0329 (AS4004-908)

NIIN: 00-936-0329
In stock
NSN: 5331-00-936-0329
FSC Code: 5331
MPN: AS4004908

5331-01-143-6591 (AS3582-904)

NIIN: 01-143-6591
In stock
NSN: 5331-01-143-6591
FSC Code: 5331
MPN: AS3582904

5331-01-317-1331 (AS379-S59-70)

NIIN: 01-317-1331
In stock
NSN: 5331-01-317-1331
FSC Code: 5331
MPN: AS379S5970

5331-00-780-8465 (AS3582-453)

NIIN: 00-780-8465
In stock
NSN: 5331-00-780-8465
FSC Code: 5331
MPN: AS3582453

5331-00-338-3940 (AS3582-448)

NIIN: 00-338-3940
In stock
NSN: 5331-00-338-3940
FSC Code: 5331
MPN: AS3582448

5331-01-058-5413 (AS3582-460)

NIIN: 01-058-5413
In stock
NSN: 5331-01-058-5413
FSC Code: 5331
MPN: AS3582460

5331-01-159-2804 (AS3582-456)

NIIN: 01-159-2804
In stock
NSN: 5331-01-159-2804
FSC Code: 5331
MPN: AS3582456

5331-00-500-1939 (AS3582-442)

NIIN: 00-500-1939
In stock
NSN: 5331-00-500-1939
FSC Code: 5331
MPN: AS3582442

5331-00-486-3395 (AS3582-443)

NIIN: 00-486-3395
In stock
NSN: 5331-00-486-3395
FSC Code: 5331
MPN: AS3582443

5331-00-811-3485 (AS3582-445)

NIIN: 00-811-3485
In stock
NSN: 5331-00-811-3485
FSC Code: 5331
MPN: AS3582445

5331-00-463-0218 (AS3582-447)

NIIN: 00-463-0218
In stock
NSN: 5331-00-463-0218
FSC Code: 5331
MPN: AS3582447

5331-00-981-3739 (AS3582-449)

NIIN: 00-981-3739
In stock
NSN: 5331-00-981-3739
FSC Code: 5331
MPN: AS3582449

5331-00-180-9646 (AS3582-337)

NIIN: 00-180-9646
In stock
NSN: 5331-00-180-9646
FSC Code: 5331
MPN: AS3582337

5331-01-128-4133 (AS3582-441)

NIIN: 01-128-4133
In stock
NSN: 5331-01-128-4133
FSC Code: 5331
MPN: AS3582441

5331-00-505-2384 (AS3582-439)

NIIN: 00-505-2384
In stock
NSN: 5331-00-505-2384
FSC Code: 5331
MPN: AS3582439

5331-01-517-4191 (7-57-226)

NIIN: 01-517-4191
In stock
NSN: 5331-01-517-4191
FSC Code: 5331
MPN: 757226

5331-01-164-8556 (AS3582-433)

NIIN: 01-164-8556
In stock
NSN: 5331-01-164-8556
FSC Code: 5331
MPN: AS3582433

5331-01-265-7098 (AS3582-347)

NIIN: 01-265-7098
In stock
NSN: 5331-01-265-7098
FSC Code: 5331
MPN: AS3582347

5331-00-147-6131 (AS3582-437)

NIIN: 00-147-6131
In stock
NSN: 5331-00-147-6131
FSC Code: 5331
MPN: AS3582437

5331-00-149-8911 (AS3582-344)

NIIN: 00-149-8911
In stock
NSN: 5331-00-149-8911
FSC Code: 5331
MPN: AS3582344

5331-00-080-7335 (AS3582-432)

NIIN: 00-080-7335
In stock
NSN: 5331-00-080-7335
FSC Code: 5331
MPN: AS3582432

5331-01-024-6301 (AS3582-430)

NIIN: 01-024-6301
In stock
NSN: 5331-01-024-6301
FSC Code: 5331
MPN: AS3582430