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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.

5331-01-550-7372 (R64997)

NIIN: 01-550-7372
In stock
NSN: 5331-01-550-7372
FSC Code: 5331
MPN: R64997

5331-01-470-5162 (R63548)

NIIN: 01-470-5162
In stock
NSN: 5331-01-470-5162
FSC Code: 5331
MPN: R63548

5331-01-540-6034 (R63185)

NIIN: 01-540-6034
In stock
NSN: 5331-01-540-6034
FSC Code: 5331
MPN: R63185

5331-01-476-3355 (R62673)

NIIN: 01-476-3355
In stock
NSN: 5331-01-476-3355
FSC Code: 5331
MPN: R62673

5331-01-511-6042 (R61467)

NIIN: 01-511-6042
In stock
NSN: 5331-01-511-6042
FSC Code: 5331
MPN: R61467

5331-01-371-3750 (R-600-002-26)

NIIN: 01-371-3750
In stock
NSN: 5331-01-371-3750
FSC Code: 5331
MPN: R60000226

5331-01-362-5962 (R-600-004-26)

NIIN: 01-362-5962
In stock
NSN: 5331-01-362-5962
FSC Code: 5331
MPN: R60000426

5331-01-362-5963 (R-600-021-26)

NIIN: 01-362-5963
In stock
NSN: 5331-01-362-5963
FSC Code: 5331
MPN: R60002126

5331-01-513-9894 (R56462)

NIIN: 01-513-9894
In stock
NSN: 5331-01-513-9894
FSC Code: 5331
MPN: R56462

5331-01-476-3354 (R54856)

NIIN: 01-476-3354
In stock
NSN: 5331-01-476-3354
FSC Code: 5331
MPN: R54856

5331-01-476-3328 (R53955)

NIIN: 01-476-3328
In stock
NSN: 5331-01-476-3328
FSC Code: 5331
MPN: R53955

5331-01-571-9644 (R53543)

NIIN: 01-571-9644
In stock
NSN: 5331-01-571-9644
FSC Code: 5331
MPN: R53543

5331-01-567-6112 (R524234)

NIIN: 01-567-6112
In stock
NSN: 5331-01-567-6112
FSC Code: 5331
MPN: R524234

5331-01-567-5226 (R520867)

NIIN: 01-567-5226
In stock
NSN: 5331-01-567-5226
FSC Code: 5331
MPN: R520867

5331-01-570-3373 (R522412)

NIIN: 01-570-3373
In stock
NSN: 5331-01-570-3373
FSC Code: 5331
MPN: R522412

5331-01-570-2994 (R522921)

NIIN: 01-570-2994
In stock
NSN: 5331-01-570-2994
FSC Code: 5331
MPN: R522921

5331-01-567-6651 (R519989)

NIIN: 01-567-6651
In stock
NSN: 5331-01-567-6651
FSC Code: 5331
MPN: R519989

5331-01-570-3276 (R521040)

NIIN: 01-570-3276
In stock
NSN: 5331-01-570-3276
FSC Code: 5331
MPN: R521040

5331-01-567-4846 (R518543)

NIIN: 01-567-4846
In stock
NSN: 5331-01-567-4846
FSC Code: 5331
MPN: R518543

5331-01-540-6016 (R516125)

NIIN: 01-540-6016
In stock
NSN: 5331-01-540-6016
FSC Code: 5331
MPN: R516125

5331-01-567-7486 (R505452)

NIIN: 01-567-7486
In stock
NSN: 5331-01-567-7486
FSC Code: 5331
MPN: R505452

5331-01-570-3273 (R505146)

NIIN: 01-570-3273
In stock
NSN: 5331-01-570-3273
FSC Code: 5331
MPN: R505146

5331-01-570-2974 (R50406)

NIIN: 01-570-2974
In stock
NSN: 5331-01-570-2974
FSC Code: 5331
MPN: R50406

5331-01-546-1429 (R504810)

NIIN: 01-546-1429
In stock
NSN: 5331-01-546-1429
FSC Code: 5331
MPN: R504810

5331-01-512-4974 (R504734)

NIIN: 01-512-4974
In stock
NSN: 5331-01-512-4974
FSC Code: 5331
MPN: R504734

5331-01-554-6218 (R49388-904G)

NIIN: 01-554-6218
In stock
NSN: 5331-01-554-6218
FSC Code: 5331
MPN: R49388904G

5331-01-510-4678 (R502076)

NIIN: 01-510-4678
In stock
NSN: 5331-01-510-4678
FSC Code: 5331
MPN: R502076

5331-01-531-2308 (R501377)

NIIN: 01-531-2308
In stock
NSN: 5331-01-531-2308
FSC Code: 5331
MPN: R501377

5331-01-369-2634 (R49388-910J)

NIIN: 01-369-2634
In stock
NSN: 5331-01-369-2634
FSC Code: 5331
MPN: R49388910J

5331-01-522-6728 (R50024P11)

NIIN: 01-522-6728
In stock
NSN: 5331-01-522-6728
FSC Code: 5331
MPN: R50024P11

5331-01-571-8801 (R48638)

NIIN: 01-571-8801
In stock
NSN: 5331-01-571-8801
FSC Code: 5331
MPN: R48638

5331-01-554-6227 (R49388-910G)

NIIN: 01-554-6227
In stock
NSN: 5331-01-554-6227
FSC Code: 5331
MPN: R49388910G

5331-01-426-0387 (R49388-902G)

NIIN: 01-426-0387
In stock
NSN: 5331-01-426-0387
FSC Code: 5331
MPN: R49388902G

5331-99-530-9595 (R4900ML5372)

NIIN: 99-530-9595
In stock
NSN: 5331-99-530-9595
FSC Code: 5331
MPN: R4900ML5372

5331-01-370-9043 (R49388-908J)

NIIN: 01-370-9043
In stock
NSN: 5331-01-370-9043
FSC Code: 5331
MPN: R49388908J

5331-01-550-8296 (R46702)

NIIN: 01-550-8296
In stock
NSN: 5331-01-550-8296
FSC Code: 5331
MPN: R46702

5331-01-421-8891 (R-4362)

NIIN: 01-421-8891
In stock
NSN: 5331-01-421-8891
FSC Code: 5331
MPN: R4362

5331-01-385-0183 (R-4362-BUNA)

NIIN: 01-385-0183
In stock
NSN: 5331-01-385-0183
FSC Code: 5331
MPN: R4362BUNA

5331-01-571-9638 (R30903)

NIIN: 01-571-9638
In stock
NSN: 5331-01-571-9638
FSC Code: 5331
MPN: R30903

5331-01-571-8471 (R27928)

NIIN: 01-571-8471
In stock
NSN: 5331-01-571-8471
FSC Code: 5331
MPN: R27928

5331-01-567-2813 (R2740003)

NIIN: 01-567-2813
In stock
NSN: 5331-01-567-2813
FSC Code: 5331
MPN: R2740003

5331-01-567-8988 (R26773)

NIIN: 01-567-8988
In stock
NSN: 5331-01-567-8988
FSC Code: 5331
MPN: R26773

5331-01-570-3993 (R22-1084)

NIIN: 01-570-3993
In stock
NSN: 5331-01-570-3993
FSC Code: 5331
MPN: R221084

5331-01-570-4738 (R183412)

NIIN: 01-570-4738
In stock
NSN: 5331-01-570-4738
FSC Code: 5331
MPN: R183412

5331-01-570-4737 (R183411)

NIIN: 01-570-4737
In stock
NSN: 5331-01-570-4737
FSC Code: 5331
MPN: R183411

5331-01-570-4736 (R183410)

NIIN: 01-570-4736
In stock
NSN: 5331-01-570-4736
FSC Code: 5331
MPN: R183410

5331-01-570-4735 (R183409)

NIIN: 01-570-4735
In stock
NSN: 5331-01-570-4735
FSC Code: 5331
MPN: R183409

5331-01-384-2523 (R-174)

NIIN: 01-384-2523
In stock
NSN: 5331-01-384-2523
FSC Code: 5331
MPN: R174