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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.

5331-01-513-8423 (430-225)

NIIN: 01-513-8423
In stock
NSN: 5331-01-513-8423
FSC Code: 5331
MPN: 430225

5331-00-404-8224 (853-07782-000)

NIIN: 00-404-8224
In stock
NSN: 5331-00-404-8224
FSC Code: 5331
MPN: 85307782000

5331-01-035-2263 (853-07868-00)

NIIN: 01-035-2263
In stock
NSN: 5331-01-035-2263
FSC Code: 5331
MPN: 8530786800

5331-01-513-6820 (430-205)

NIIN: 01-513-6820
In stock
NSN: 5331-01-513-6820
FSC Code: 5331
MPN: 430205

5331-01-513-8426 (430-175)

NIIN: 01-513-8426
In stock
NSN: 5331-01-513-8426
FSC Code: 5331
MPN: 430175

5331-01-145-6892 (8528-9676)

NIIN: 01-145-6892
In stock
NSN: 5331-01-145-6892
FSC Code: 5331
MPN: 85289676

5331-01-169-7145 (8528-9700)

NIIN: 01-169-7145
In stock
NSN: 5331-01-169-7145
FSC Code: 5331
MPN: 85289700

5331-01-143-7402 (8528-9551)

NIIN: 01-143-7402
In stock
NSN: 5331-01-143-7402
FSC Code: 5331
MPN: 85289551

5331-01-513-8425 (430-060)

NIIN: 01-513-8425
In stock
NSN: 5331-01-513-8425
FSC Code: 5331
MPN: 430060

5331-01-466-3537 (4-2X1-9-61D6)

NIIN: 01-466-3537
In stock
NSN: 5331-01-466-3537
FSC Code: 5331
MPN: 42X1961D6

5331-12-179-8856 (CVR-700429042001)

NIIN: 12-179-8856
In stock
NSN: 5331-12-179-8856
FSC Code: 5331
MPN: CVR700429042001

5331-01-459-5130 (43.5-0014-3)

NIIN: 01-459-5130
In stock
NSN: 5331-01-459-5130
FSC Code: 5331
MPN: 43500143

5331-01-546-1790 (428-R11)

NIIN: 01-546-1790
In stock
NSN: 5331-01-546-1790
FSC Code: 5331
MPN: 428R11

5331-01-483-5580 (428L004)

NIIN: 01-483-5580
In stock
NSN: 5331-01-483-5580
FSC Code: 5331
MPN: 428L004

5331-00-796-1171 (8511247-2)

NIIN: 00-796-1171
In stock
NSN: 5331-00-796-1171
FSC Code: 5331
MPN: 85112472

5331-01-525-7427 (4-2875-20-5)

NIIN: 01-525-7427
In stock
NSN: 5331-01-525-7427
FSC Code: 5331
MPN: 42875205

5331-01-200-6879 (851081-0)

NIIN: 01-200-6879
In stock
NSN: 5331-01-200-6879
FSC Code: 5331
MPN: 8510810

5331-01-537-1356 (427-15-15910)

NIIN: 01-537-1356
In stock
NSN: 5331-01-537-1356
FSC Code: 5331
MPN: 4271515910

5331-01-205-9793 (850418-5)

NIIN: 01-205-9793
In stock
NSN: 5331-01-205-9793
FSC Code: 5331
MPN: 8504185

5331-01-311-1472 (85008-100-GH)

NIIN: 01-311-1472
In stock
NSN: 5331-01-311-1472
FSC Code: 5331
MPN: 85008100GH

5331-01-292-5303 (85008-127-06)

NIIN: 01-292-5303
In stock
NSN: 5331-01-292-5303
FSC Code: 5331
MPN: 8500812706

5331-01-422-0711 (42-630-080)

NIIN: 01-422-0711
In stock
NSN: 5331-01-422-0711
FSC Code: 5331
MPN: 42630080

5331-01-422-0713 (42-630-078)

NIIN: 01-422-0713
In stock
NSN: 5331-01-422-0713
FSC Code: 5331
MPN: 42630078

5331-01-377-9013 (42-630-070)

NIIN: 01-377-9013
In stock
NSN: 5331-01-377-9013
FSC Code: 5331
MPN: 42630070

5331-01-486-1730 (MS33666-231)

NIIN: 01-486-1730
In stock
NSN: 5331-01-486-1730
FSC Code: 5331
MPN: MS33666231

5331-01-486-1727 (MS33666-225)

NIIN: 01-486-1727
In stock
NSN: 5331-01-486-1727
FSC Code: 5331
MPN: MS33666225

5331-01-445-1240 (MS33666-217)

NIIN: 01-445-1240
In stock
NSN: 5331-01-445-1240
FSC Code: 5331
MPN: MS33666217

5331-01-486-1734 (MS33666-213)

NIIN: 01-486-1734
In stock
NSN: 5331-01-486-1734
FSC Code: 5331
MPN: MS33666213

5331-01-486-1729 (AS568-227/MILP25732)

NIIN: 01-486-1729
In stock
NSN: 5331-01-486-1729
FSC Code: 5331
MPN: AS568227MILP25732

5331-01-486-1736 (MS33666-224)

NIIN: 01-486-1736
In stock
NSN: 5331-01-486-1736
FSC Code: 5331
MPN: MS33666224

5331-01-486-1732 (4-2604-100A)

NIIN: 01-486-1732
In stock
NSN: 5331-01-486-1732
FSC Code: 5331
MPN: 42604100A

5331-00-953-6462 (84W85)

NIIN: 00-953-6462
In stock
NSN: 5331-00-953-6462
FSC Code: 5331
MPN: 84W85

5331-01-410-7866 (42589-0)

NIIN: 01-410-7866
In stock
NSN: 5331-01-410-7866
FSC Code: 5331
MPN: 425890

5331-00-903-3656 (8497-179-81)

NIIN: 00-903-3656
In stock
NSN: 5331-00-903-3656
FSC Code: 5331
MPN: 849717981

5331-00-169-8353 (849105-727)

NIIN: 00-169-8353
In stock
NSN: 5331-00-169-8353
FSC Code: 5331
MPN: 849105727

5331-00-169-8351 (849005-159)

NIIN: 00-169-8351
In stock
NSN: 5331-00-169-8351
FSC Code: 5331
MPN: 849005159

5331-00-169-8352 (849007-110)

NIIN: 00-169-8352
In stock
NSN: 5331-00-169-8352
FSC Code: 5331
MPN: 849007110

5331-01-547-8300 (42555-240)

NIIN: 01-547-8300
In stock
NSN: 5331-01-547-8300
FSC Code: 5331
MPN: 42555240

5331-01-316-5155 (849003-119)

NIIN: 01-316-5155
In stock
NSN: 5331-01-316-5155
FSC Code: 5331
MPN: 849003119

5331-01-239-7113 (849003-121)

NIIN: 01-239-7113
In stock
NSN: 5331-01-239-7113
FSC Code: 5331
MPN: 849003121

5331-00-663-8352 (846750-40)

NIIN: 00-663-8352
In stock
NSN: 5331-00-663-8352
FSC Code: 5331
MPN: 84675040

5331-00-192-6342 (846750-28)

NIIN: 00-192-6342
In stock
NSN: 5331-00-192-6342
FSC Code: 5331
MPN: 84675028

5331-01-200-1253 (845824-2)

NIIN: 01-200-1253
In stock
NSN: 5331-01-200-1253
FSC Code: 5331
MPN: 8458242

5331-01-138-6351 (845-8219247-063)

NIIN: 01-138-6351
In stock
NSN: 5331-01-138-6351
FSC Code: 5331
MPN: 8458219247063

5331-01-418-3721 (4242600RT-349)

NIIN: 01-418-3721
In stock
NSN: 5331-01-418-3721
FSC Code: 5331
MPN: 4242600RT349

5331-01-007-4895 (845-4687581)

NIIN: 01-007-4895
In stock
NSN: 5331-01-007-4895
FSC Code: 5331
MPN: 8454687581

5331-01-005-4049 (845-4687577)

NIIN: 01-005-4049
In stock
NSN: 5331-01-005-4049
FSC Code: 5331
MPN: 8454687577

5331-01-486-1733 (MS33666-237)

NIIN: 01-486-1733
In stock
NSN: 5331-01-486-1733
FSC Code: 5331
MPN: MS33666237