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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.

5331-01-317-6279 (4564-115,EU)

NIIN: 01-317-6279
In stock
NSN: 5331-01-317-6279
FSC Code: 5331
MPN: 4564115EU

5331-01-331-7152 (4562-228)

NIIN: 01-331-7152
In stock
NSN: 5331-01-331-7152
FSC Code: 5331
MPN: 4562228

5331-01-312-0157 (4562-112003)

NIIN: 01-312-0157
In stock
NSN: 5331-01-312-0157
FSC Code: 5331
MPN: 4562112003

5331-01-292-4008 (4557-ND)

NIIN: 01-292-4008
In stock
NSN: 5331-01-292-4008
FSC Code: 5331
MPN: 4557ND

5331-01-142-3510 (45528345-80)

NIIN: 01-142-3510
In stock
NSN: 5331-01-142-3510
FSC Code: 5331
MPN: 4552834580

5331-01-296-7692 (45528345-60)

NIIN: 01-296-7692
In stock
NSN: 5331-01-296-7692
FSC Code: 5331
MPN: 4552834560

5331-01-564-5863 (1590ORING-100)

NIIN: 01-564-5863
In stock
NSN: 5331-01-564-5863
FSC Code: 5331
MPN: 1590ORING100

5331-01-424-1453 (65107-K-992)

NIIN: 01-424-1453
In stock
NSN: 5331-01-424-1453
FSC Code: 5331
MPN: 65107K992

5331-01-173-3420 (45506-15)

NIIN: 01-173-3420
In stock
NSN: 5331-01-173-3420
FSC Code: 5331
MPN: 4550615

5331-01-173-3419 (45506-15)

NIIN: 01-173-3419
In stock
NSN: 5331-01-173-3419
FSC Code: 5331
MPN: 4550615

5331-01-173-0156 (455-0376)

NIIN: 01-173-0156
In stock
NSN: 5331-01-173-0156
FSC Code: 5331
MPN: 4550376

5331-01-441-6723 (158882PL)

NIIN: 01-441-6723
In stock
NSN: 5331-01-441-6723
FSC Code: 5331
MPN: 158882PL

5331-01-527-3419 (158860805NVI)

NIIN: 01-527-3419
In stock
NSN: 5331-01-527-3419
FSC Code: 5331
MPN: 158860805NVI

5331-01-527-3425 (158860815NVI)

NIIN: 01-527-3425
In stock
NSN: 5331-01-527-3425
FSC Code: 5331
MPN: 158860815NVI

5331-01-527-3399 (158861402NBN70)

NIIN: 01-527-3399
In stock
NSN: 5331-01-527-3399
FSC Code: 5331
MPN: 158861402NBN70

5331-01-527-3412 (158860802NVI)

NIIN: 01-527-3412
In stock
NSN: 5331-01-527-3412
FSC Code: 5331
MPN: 158860802NVI

5331-01-527-3406 (158860117NBN70)

NIIN: 01-527-3406
In stock
NSN: 5331-01-527-3406
FSC Code: 5331
MPN: 158860117NBN70

5331-00-838-8596 (45427996-09)

NIIN: 00-838-8596
In stock
NSN: 5331-00-838-8596
FSC Code: 5331
MPN: 4542799609

5331-01-527-3403 (158860116NBN70)

NIIN: 01-527-3403
In stock
NSN: 5331-01-527-3403
FSC Code: 5331
MPN: 158860116NBN70

5331-01-527-3392 (158860404NBN70)

NIIN: 01-527-3392
In stock
NSN: 5331-01-527-3392
FSC Code: 5331
MPN: 158860404NBN70

5331-01-527-3420 (158860807NVI)

NIIN: 01-527-3420
In stock
NSN: 5331-01-527-3420
FSC Code: 5331
MPN: 158860807NVI

5331-01-527-3394 (158860702NBN70)

NIIN: 01-527-3394
In stock
NSN: 5331-01-527-3394
FSC Code: 5331
MPN: 158860702NBN70

5331-01-441-6722 (15882PL)

NIIN: 01-441-6722
In stock
NSN: 5331-01-441-6722
FSC Code: 5331
MPN: 15882PL

5331-01-172-4645 (4537800-772)

NIIN: 01-172-4645
In stock
NSN: 5331-01-172-4645
FSC Code: 5331
MPN: 4537800772

5331-01-176-1357 (4537800-015)

NIIN: 01-176-1357
In stock
NSN: 5331-01-176-1357
FSC Code: 5331
MPN: 4537800015

5331-01-176-1356 (4537800-013)

NIIN: 01-176-1356
In stock
NSN: 5331-01-176-1356
FSC Code: 5331
MPN: 4537800013

5331-01-176-4698 (4537800-014)

NIIN: 01-176-4698
In stock
NSN: 5331-01-176-4698
FSC Code: 5331
MPN: 4537800014

5331-01-173-0154 (4537800-233)

NIIN: 01-173-0154
In stock
NSN: 5331-01-173-0154
FSC Code: 5331
MPN: 4537800233

5331-01-031-4496 (453-7507)

NIIN: 01-031-4496
In stock
NSN: 5331-01-031-4496
FSC Code: 5331
MPN: 4537507

5331-01-173-9218 (4536226-902)

NIIN: 01-173-9218
In stock
NSN: 5331-01-173-9218
FSC Code: 5331
MPN: 4536226902

5331-01-431-3621 (15841-5362-2)

NIIN: 01-431-3621
In stock
NSN: 5331-01-431-3621
FSC Code: 5331
MPN: 1584153622

5331-01-434-3194 (1583636-20)

NIIN: 01-434-3194
In stock
NSN: 5331-01-434-3194
FSC Code: 5331
MPN: 158363620

5331-01-321-2459 (4536B52R32)

NIIN: 01-321-2459
In stock
NSN: 5331-01-321-2459
FSC Code: 5331
MPN: 4536B52R32

5331-01-167-0777 (4536751-003)

NIIN: 01-167-0777
In stock
NSN: 5331-01-167-0777
FSC Code: 5331
MPN: 4536751003

5331-01-297-7422 (453-3625)

NIIN: 01-297-7422
In stock
NSN: 5331-01-297-7422
FSC Code: 5331
MPN: 4533625

5331-01-292-0155 (45-301-00)

NIIN: 01-292-0155
In stock
NSN: 5331-01-292-0155
FSC Code: 5331
MPN: 4530100

5331-00-999-2724 (45-258216)

NIIN: 00-999-2724
In stock
NSN: 5331-00-999-2724
FSC Code: 5331
MPN: 45258216

5331-00-807-8252 (45-259543)

NIIN: 00-807-8252
In stock
NSN: 5331-00-807-8252
FSC Code: 5331
MPN: 45259543

5331-01-157-9832 (452-02-067-139)

NIIN: 01-157-9832
In stock
NSN: 5331-01-157-9832
FSC Code: 5331
MPN: 45202067139

5331-01-089-2573 (451-7531-4)

NIIN: 01-089-2573
In stock
NSN: 5331-01-089-2573
FSC Code: 5331
MPN: 45175314

5331-01-147-8752 (4514-F)

NIIN: 01-147-8752
In stock
NSN: 5331-01-147-8752
FSC Code: 5331
MPN: 4514F

5331-01-324-1454 (45112-3)

NIIN: 01-324-1454
In stock
NSN: 5331-01-324-1454
FSC Code: 5331
MPN: 451123

5331-01-324-2541 (45112-2-1285)

NIIN: 01-324-2541
In stock
NSN: 5331-01-324-2541
FSC Code: 5331
MPN: 4511221285

5331-01-345-1676 (157773-1)

NIIN: 01-345-1676
In stock
NSN: 5331-01-345-1676
FSC Code: 5331
MPN: 1577731

5331-00-182-3506 (450-SK-219002)

NIIN: 00-182-3506
In stock
NSN: 5331-00-182-3506
FSC Code: 5331
MPN: 450SK219002

5331-00-708-5629 (45085-001-07)

NIIN: 00-708-5629
In stock
NSN: 5331-00-708-5629
FSC Code: 5331
MPN: 4508500107

5331-01-250-6730 (450-5083-8)

NIIN: 01-250-6730
In stock
NSN: 5331-01-250-6730
FSC Code: 5331
MPN: 45050838

5331-01-416-5405 (157303-022)

NIIN: 01-416-5405
In stock
NSN: 5331-01-416-5405
FSC Code: 5331
MPN: 157303022