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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.

5331-01-066-9264 (C-8541678)

NIIN: 01-066-9264
In stock
NSN: 5331-01-066-9264
FSC Code: 5331
MPN: C8541678

5331-01-255-6586 (C7NN-9H515-A)

NIIN: 01-255-6586
In stock
NSN: 5331-01-255-6586
FSC Code: 5331
MPN: C7NN9H515A

5331-00-141-4231 (C746575SUB2PT8)

NIIN: 00-141-4231
In stock
NSN: 5331-00-141-4231
FSC Code: 5331
MPN: C746575SUB2PT8

5331-00-171-6069 (C742595-99REV19)

NIIN: 00-171-6069
In stock
NSN: 5331-00-171-6069
FSC Code: 5331
MPN: C74259599REV19

5331-00-599-6485 (C742595PT87)

NIIN: 00-599-6485
In stock
NSN: 5331-00-599-6485
FSC Code: 5331
MPN: C742595PT87

5331-00-297-2467 (C742595-168)

NIIN: 00-297-2467
In stock
NSN: 5331-00-297-2467
FSC Code: 5331
MPN: C742595168

5331-01-225-8559 (C70123-66130)

NIIN: 01-225-8559
In stock
NSN: 5331-01-225-8559
FSC Code: 5331
MPN: C7012366130

5331-01-210-6557 (C70111-11460)

NIIN: 01-210-6557
In stock
NSN: 5331-01-210-6557
FSC Code: 5331
MPN: C7011111460

5331-01-192-2122 (C7)

NIIN: 01-192-2122
In stock
NSN: 5331-01-192-2122
FSC Code: 5331
MPN: C7

5331-12-192-7298 (6-414-0310)

NIIN: 12-192-7298
In stock
NSN: 5331-12-192-7298
FSC Code: 5331
MPN: 64140310

5331-01-053-1452 (C68973-112)

NIIN: 01-053-1452
In stock
NSN: 5331-01-053-1452
FSC Code: 5331
MPN: C68973112

5331-00-527-8700 (C685977-3)

NIIN: 00-527-8700
In stock
NSN: 5331-00-527-8700
FSC Code: 5331
MPN: C6859773

5331-00-527-8701 (C685977-1)

NIIN: 00-527-8701
In stock
NSN: 5331-00-527-8701
FSC Code: 5331
MPN: C6859771

5331-00-527-8702 (C685977-2)

NIIN: 00-527-8702
In stock
NSN: 5331-00-527-8702
FSC Code: 5331
MPN: C6859772

5331-01-338-5552 (C65)

NIIN: 01-338-5552
In stock
NSN: 5331-01-338-5552
FSC Code: 5331
MPN: C65

5331-01-443-5724 (64-0976-71)

NIIN: 01-443-5724
In stock
NSN: 5331-01-443-5724
FSC Code: 5331
MPN: 64097671

5331-01-278-7621 (C640)

NIIN: 01-278-7621
In stock
NSN: 5331-01-278-7621
FSC Code: 5331
MPN: C640

5331-01-420-6756 (D-452-119)

NIIN: 01-420-6756
In stock
NSN: 5331-01-420-6756
FSC Code: 5331
MPN: D452119

5331-01-524-7494 (640913-002)

NIIN: 01-524-7494
In stock
NSN: 5331-01-524-7494
FSC Code: 5331
MPN: 640913002

5331-01-443-5723 (64-0754-71)

NIIN: 01-443-5723
In stock
NSN: 5331-01-443-5723
FSC Code: 5331
MPN: 64075471

5331-01-536-0167 (640829-006)

NIIN: 01-536-0167
In stock
NSN: 5331-01-536-0167
FSC Code: 5331
MPN: 640829006

5331-01-443-5721 (64-0717-71)

NIIN: 01-443-5721
In stock
NSN: 5331-01-443-5721
FSC Code: 5331
MPN: 64071771

5331-01-443-5722 (64-0719-71)

NIIN: 01-443-5722
In stock
NSN: 5331-01-443-5722
FSC Code: 5331
MPN: 64071971

5331-00-333-8121 (C61905)

NIIN: 00-333-8121
In stock
NSN: 5331-00-333-8121
FSC Code: 5331
MPN: C61905

5331-01-080-9002 (C-604-K1)

NIIN: 01-080-9002
In stock
NSN: 5331-01-080-9002
FSC Code: 5331
MPN: C604K1

5331-01-211-1335 (C-60)

NIIN: 01-211-1335
In stock
NSN: 5331-01-211-1335
FSC Code: 5331
MPN: C60

5331-12-310-8909 (700429063000)

NIIN: 12-310-8909
In stock
NSN: 5331-12-310-8909
FSC Code: 5331
MPN: 700429063000

5331-01-519-0274 (63994-08)

NIIN: 01-519-0274
In stock
NSN: 5331-01-519-0274
FSC Code: 5331
MPN: 6399408

5331-01-530-9796 (G547-0002-6397304-15D4)

NIIN: 01-530-9796
In stock
NSN: 5331-01-530-9796
FSC Code: 5331
MPN: G5470002639730415D4

5331-01-531-4995 (G547-0003-6397304-27D4)

NIIN: 01-531-4995
In stock
NSN: 5331-01-531-4995
FSC Code: 5331
MPN: G5470003639730427D4

5331-01-530-9795 (G547-0002-6397304-12D4)

NIIN: 01-530-9795
In stock
NSN: 5331-01-530-9795
FSC Code: 5331
MPN: G5470002639730412D4

5331-01-541-1856 (6395074-1D4)

NIIN: 01-541-1856
In stock
NSN: 5331-01-541-1856
FSC Code: 5331
MPN: 63950741D4

5331-01-506-5297 (6392979-1)

NIIN: 01-506-5297
In stock
NSN: 5331-01-506-5297
FSC Code: 5331
MPN: 63929791

5331-01-541-1857 (M83248/1-275D4)

NIIN: 01-541-1857
In stock
NSN: 5331-01-541-1857
FSC Code: 5331
MPN: M832481275D4

5331-01-506-5309 (6392979-2)

NIIN: 01-506-5309
In stock
NSN: 5331-01-506-5309
FSC Code: 5331
MPN: 63929792

5331-01-542-4587 (M83248/1-225D4)

NIIN: 01-542-4587
In stock
NSN: 5331-01-542-4587
FSC Code: 5331
MPN: M832481225D4

5331-01-541-1881 (M83248/1-227D4)

NIIN: 01-541-1881
In stock
NSN: 5331-01-541-1881
FSC Code: 5331
MPN: M832481227D4

5331-01-542-4597 (M83248/1-221D4)

NIIN: 01-542-4597
In stock
NSN: 5331-01-542-4597
FSC Code: 5331
MPN: M832481221D4

5331-01-458-8027 (MIL-R-83248/2)

NIIN: 01-458-8027
In stock
NSN: 5331-01-458-8027
FSC Code: 5331
MPN: MILR832482

5331-01-540-0879 (M83248/2-916D0)

NIIN: 01-540-0879
In stock
NSN: 5331-01-540-0879
FSC Code: 5331
MPN: M832482916D0

5331-01-194-8974 (C500225-1)

NIIN: 01-194-8974
In stock
NSN: 5331-01-194-8974
FSC Code: 5331
MPN: C5002251

5331-01-516-4373 (6386272-003)

NIIN: 01-516-4373
In stock
NSN: 5331-01-516-4373
FSC Code: 5331
MPN: 6386272003

5331-01-516-4286 (6386272-001)

NIIN: 01-516-4286
In stock
NSN: 5331-01-516-4286
FSC Code: 5331
MPN: 6386272001

5331-01-516-4288 (6386272-004)

NIIN: 01-516-4288
In stock
NSN: 5331-01-516-4288
FSC Code: 5331
MPN: 6386272004

5331-01-516-4372 (638272-002)

NIIN: 01-516-4372
In stock
NSN: 5331-01-516-4372
FSC Code: 5331
MPN: 638272002

5331-01-342-1653 (NAS1611-119CP)

NIIN: 01-342-1653
In stock
NSN: 5331-01-342-1653
FSC Code: 5331
MPN: NAS1611119CP

5331-01-451-2234 (NAS1611-125CP)

NIIN: 01-451-2234
In stock
NSN: 5331-01-451-2234
FSC Code: 5331
MPN: NAS1611125CP

5331-01-285-1597 (C4168-49FHS-150)

NIIN: 01-285-1597
In stock
NSN: 5331-01-285-1597
FSC Code: 5331
MPN: C416849FHS150