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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.

5331-00-762-9513 (S9412-573)

NIIN: 00-762-9513
In stock
NSN: 5331-00-762-9513
FSC Code: 5331
MPN: S9412573

5331-00-159-3468 (S9413-006)

NIIN: 00-159-3468
In stock
NSN: 5331-00-159-3468
FSC Code: 5331
MPN: S9413006

5331-00-433-3617 (S9412-640)

NIIN: 00-433-3617
In stock
NSN: 5331-00-433-3617
FSC Code: 5331
MPN: S9412640

5331-00-179-9363 (S9412-589)

NIIN: 00-179-9363
In stock
NSN: 5331-00-179-9363
FSC Code: 5331
MPN: S9412589

5331-00-187-5999 (S9412-656)

NIIN: 00-187-5999
In stock
NSN: 5331-00-187-5999
FSC Code: 5331
MPN: S9412656

5331-00-007-0064 (S9412-565)

NIIN: 00-007-0064
In stock
NSN: 5331-00-007-0064
FSC Code: 5331
MPN: S9412565

5331-00-220-5259 (S9412-562)

NIIN: 00-220-5259
In stock
NSN: 5331-00-220-5259
FSC Code: 5331
MPN: S9412562

5331-00-413-3030 (S9412-572)

NIIN: 00-413-3030
In stock
NSN: 5331-00-413-3030
FSC Code: 5331
MPN: S9412572

5331-00-279-9040 (S9412-571)

NIIN: 00-279-9040
In stock
NSN: 5331-00-279-9040
FSC Code: 5331
MPN: S9412571

5331-01-320-9294 (S9412-539)

NIIN: 01-320-9294
In stock
NSN: 5331-01-320-9294
FSC Code: 5331
MPN: S9412539

5331-01-194-8965 (S9412-535)

NIIN: 01-194-8965
In stock
NSN: 5331-01-194-8965
FSC Code: 5331
MPN: S9412535

5331-00-009-9289 (S9412-567)

NIIN: 00-009-9289
In stock
NSN: 5331-00-009-9289
FSC Code: 5331
MPN: S9412567

5331-01-012-1076 (S9412-564)

NIIN: 01-012-1076
In stock
NSN: 5331-01-012-1076
FSC Code: 5331
MPN: S9412564

5331-01-020-6926 (S9412-538)

NIIN: 01-020-6926
In stock
NSN: 5331-01-020-6926
FSC Code: 5331
MPN: S9412538

5331-00-253-5364 (S9412-550)

NIIN: 00-253-5364
In stock
NSN: 5331-00-253-5364
FSC Code: 5331
MPN: S9412550

5331-00-191-3569 (S9412-523)

NIIN: 00-191-3569
In stock
NSN: 5331-00-191-3569
FSC Code: 5331
MPN: S9412523

5331-01-290-7275 (S9412-501)

NIIN: 01-290-7275
In stock
NSN: 5331-01-290-7275
FSC Code: 5331
MPN: S9412501

5331-01-020-6925 (S9412-536)

NIIN: 01-020-6925
In stock
NSN: 5331-01-020-6925
FSC Code: 5331
MPN: S9412536

5331-00-005-3779 (S9412-548)

NIIN: 00-005-3779
In stock
NSN: 5331-00-005-3779
FSC Code: 5331
MPN: S9412548

5331-00-169-9773 (S9412-527)

NIIN: 00-169-9773
In stock
NSN: 5331-00-169-9773
FSC Code: 5331
MPN: S9412527

5331-00-411-3710 (S9412-521)

NIIN: 00-411-3710
In stock
NSN: 5331-00-411-3710
FSC Code: 5331
MPN: S9412521

5331-01-229-4684 (S9412-532)

NIIN: 01-229-4684
In stock
NSN: 5331-01-229-4684
FSC Code: 5331
MPN: S9412532

5331-00-616-6409 (S9412-505)

NIIN: 00-616-6409
In stock
NSN: 5331-00-616-6409
FSC Code: 5331
MPN: S9412505

5331-01-032-6073 (S9412-526)

NIIN: 01-032-6073
In stock
NSN: 5331-01-032-6073
FSC Code: 5331
MPN: S9412526

5331-00-421-9427 (S9412-516)

NIIN: 00-421-9427
In stock
NSN: 5331-00-421-9427
FSC Code: 5331
MPN: S9412516

5331-01-315-8884 (S9412-506)

NIIN: 01-315-8884
In stock
NSN: 5331-01-315-8884
FSC Code: 5331
MPN: S9412506

5331-00-179-9445 (S9412-502)

NIIN: 00-179-9445
In stock
NSN: 5331-00-179-9445
FSC Code: 5331
MPN: S9412502

5331-00-413-2924 (S9412-236)

NIIN: 00-413-2924
In stock
NSN: 5331-00-413-2924
FSC Code: 5331
MPN: S9412236

5331-00-413-2947 (S9412-249)

NIIN: 00-413-2947
In stock
NSN: 5331-00-413-2947
FSC Code: 5331
MPN: S9412249

5331-01-017-5612 (S9412-226)

NIIN: 01-017-5612
In stock
NSN: 5331-01-017-5612
FSC Code: 5331
MPN: S9412226

5331-01-014-4298 (S9412-135)

NIIN: 01-014-4298
In stock
NSN: 5331-01-014-4298
FSC Code: 5331
MPN: S9412135

5331-00-402-8712 (S9412-147)

NIIN: 00-402-8712
In stock
NSN: 5331-00-402-8712
FSC Code: 5331
MPN: S9412147

5331-00-231-7733 (S9412-169)

NIIN: 00-231-7733
In stock
NSN: 5331-00-231-7733
FSC Code: 5331
MPN: S9412169

5331-00-421-9434 (S9412-210)

NIIN: 00-421-9434
In stock
NSN: 5331-00-421-9434
FSC Code: 5331
MPN: S9412210

5331-00-184-6358 (S9412-157)

NIIN: 00-184-6358
In stock
NSN: 5331-00-184-6358
FSC Code: 5331
MPN: S9412157

5331-00-324-7075 (S9412-133)

NIIN: 00-324-7075
In stock
NSN: 5331-00-324-7075
FSC Code: 5331
MPN: S9412133

5331-00-004-2989 (S9412-128)

NIIN: 00-004-2989
In stock
NSN: 5331-00-004-2989
FSC Code: 5331
MPN: S9412128

5331-00-007-0101 (S9412-119)

NIIN: 00-007-0101
In stock
NSN: 5331-00-007-0101
FSC Code: 5331
MPN: S9412119

5331-00-202-0555 (S9412-117)

NIIN: 00-202-0555
In stock
NSN: 5331-00-202-0555
FSC Code: 5331
MPN: S9412117

5331-00-404-1476 (S9412-039)

NIIN: 00-404-1476
In stock
NSN: 5331-00-404-1476
FSC Code: 5331
MPN: S9412039

5331-00-519-7698 (S9412-046)

NIIN: 00-519-7698
In stock
NSN: 5331-00-519-7698
FSC Code: 5331
MPN: S9412046

5331-00-236-6554 (S9412-113)

NIIN: 00-236-6554
In stock
NSN: 5331-00-236-6554
FSC Code: 5331
MPN: S9412113

5331-00-401-4898 (S9412-042)

NIIN: 00-401-4898
In stock
NSN: 5331-00-401-4898
FSC Code: 5331
MPN: S9412042

5331-01-014-6168 (S9412-109)

NIIN: 01-014-6168
In stock
NSN: 5331-01-014-6168
FSC Code: 5331
MPN: S9412109

5331-01-290-7276 (S9412-025)

NIIN: 01-290-7276
In stock
NSN: 5331-01-290-7276
FSC Code: 5331
MPN: S9412025

5331-00-426-6552 (S9412-034)

NIIN: 00-426-6552
In stock
NSN: 5331-00-426-6552
FSC Code: 5331
MPN: S9412034

5331-00-187-9852 (S9412-024)

NIIN: 00-187-9852
In stock
NSN: 5331-00-187-9852
FSC Code: 5331
MPN: S9412024

5331-00-450-3526 (S9412-027)

NIIN: 00-450-3526
In stock
NSN: 5331-00-450-3526
FSC Code: 5331
MPN: S9412027