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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.

5331-01-603-0191 (Z65110)

NIIN: 01-603-0191
In stock
NSN: 5331-01-603-0191
FSC Code: 5331
MPN: Z65110

5331-01-602-8987 (11201)

NIIN: 01-602-8987
In stock
NSN: 5331-01-602-8987
FSC Code: 5331
MPN: 11201

5331-01-602-8982 (4935805)

NIIN: 01-602-8982
In stock
NSN: 5331-01-602-8982
FSC Code: 5331
MPN: 4935805

5331-01-602-5123 (M730000453)

NIIN: 01-602-5123
In stock
NSN: 5331-01-602-5123
FSC Code: 5331
MPN: M730000453

5331-01-602-1590 (900104)

NIIN: 01-602-1590
In stock
NSN: 5331-01-602-1590
FSC Code: 5331
MPN: 900104

5331-01-602-1464 (2AAT12178)

NIIN: 01-602-1464
In stock
NSN: 5331-01-602-1464
FSC Code: 5331
MPN: 2AAT12178

5331-01-602-6742 (135-7940)

NIIN: 01-602-6742
In stock
NSN: 5331-01-602-6742
FSC Code: 5331
MPN: 1357940

5331-01-602-4433 (01-050-363)

NIIN: 01-602-4433
In stock
NSN: 5331-01-602-4433
FSC Code: 5331
MPN: 01050363

5331-01-602-4423 (3 359 8 19 107 03)

NIIN: 01-602-4423
In stock
NSN: 5331-01-602-4423
FSC Code: 5331
MPN: 335981910703

5331-01-602-3386 (16797N18)

NIIN: 01-602-3386
In stock
NSN: 5331-01-602-3386
FSC Code: 5331
MPN: 16797N18

5331-01-602-0523 (0391-00-169-T)

NIIN: 01-602-0523
In stock
NSN: 5331-01-602-0523
FSC Code: 5331
MPN: 039100169T

5331-01-602-0283 (028-13865-000)

NIIN: 01-602-0283
In stock
NSN: 5331-01-602-0283
FSC Code: 5331
MPN: 02813865000

5331-01-602-0659 (102 026 07)

NIIN: 01-602-0659
In stock
NSN: 5331-01-602-0659
FSC Code: 5331
MPN: 10202607

5331-01-602-0414 (04436942)

NIIN: 01-602-0414
In stock
NSN: 5331-01-602-0414
FSC Code: 5331
MPN: 04436942

5331-01-602-0520 (0391-00-011)

NIIN: 01-602-0520
In stock
NSN: 5331-01-602-0520
FSC Code: 5331
MPN: 039100011

5331-01-602-0288 (028-13859-000)

NIIN: 01-602-0288
In stock
NSN: 5331-01-602-0288
FSC Code: 5331
MPN: 02813859000

5331-01-602-0280 (028-13857-000)

NIIN: 01-602-0280
In stock
NSN: 5331-01-602-0280
FSC Code: 5331
MPN: 02813857000

5331-01-602-0260 (2854075)

NIIN: 01-602-0260
In stock
NSN: 5331-01-602-0260
FSC Code: 5331
MPN: 2854075

5331-01-601-8910 (G137B6F)

NIIN: 01-601-8910
In stock
NSN: 5331-01-601-8910
FSC Code: 5331
MPN: G137B6F

5331-01-601-9859 (M730000233)

NIIN: 01-601-9859
In stock
NSN: 5331-01-601-9859
FSC Code: 5331
MPN: M730000233

5331-01-601-9901 (24321-000750)

NIIN: 01-601-9901
In stock
NSN: 5331-01-601-9901
FSC Code: 5331
MPN: 24321000750

5331-01-601-9841 (250001-031)

NIIN: 01-601-9841
In stock
NSN: 5331-01-601-9841
FSC Code: 5331
MPN: 250001031

5331-01-601-8624 (237968-0001 ITEM 63)

NIIN: 01-601-8624
In stock
NSN: 5331-01-601-8624
FSC Code: 5331
MPN: 2379680001ITEM63

5331-01-601-8623 (237968-0001 ITEM 61)

NIIN: 01-601-8623
In stock
NSN: 5331-01-601-8623
FSC Code: 5331
MPN: 2379680001ITEM61

5331-01-602-6889 (S8890-012)

NIIN: 01-602-6889
In stock
NSN: 5331-01-602-6889
FSC Code: 5331
MPN: S8890012

5331-01-602-0409 (675-00242-0K)

NIIN: 01-602-0409
In stock
NSN: 5331-01-602-0409
FSC Code: 5331
MPN: 675002420K

5331-01-602-0287 (028-13854-000)

NIIN: 01-602-0287
In stock
NSN: 5331-01-602-0287
FSC Code: 5331
MPN: 02813854000

5331-01-601-9734 (5568534)

NIIN: 01-601-9734
In stock
NSN: 5331-01-601-9734
FSC Code: 5331
MPN: 5568534

5331-01-602-1025 (S1224-70 2-133)

NIIN: 01-602-1025
In stock
NSN: 5331-01-602-1025
FSC Code: 5331
MPN: S1224702133

5331-01-602-0717 (523103)

NIIN: 01-602-0717
In stock
NSN: 5331-01-602-0717
FSC Code: 5331
MPN: 523103

5331-01-602-0679 (102 026 31)

NIIN: 01-602-0679
In stock
NSN: 5331-01-602-0679
FSC Code: 5331
MPN: 10202631

5331-01-602-0415 (04901434)

NIIN: 01-602-0415
In stock
NSN: 5331-01-602-0415
FSC Code: 5331
MPN: 04901434

5331-01-602-0230 (3601220)

NIIN: 01-602-0230
In stock
NSN: 5331-01-602-0230
FSC Code: 5331
MPN: 3601220

5331-01-602-0066 (14002152)

NIIN: 01-602-0066
In stock
NSN: 5331-01-602-0066
FSC Code: 5331
MPN: 14002152

5331-01-601-9016 (4400483-1110)

NIIN: 01-601-9016
In stock
NSN: 5331-01-601-9016
FSC Code: 5331
MPN: 44004831110

5331-01-601-8556 (310802)

NIIN: 01-601-8556
In stock
NSN: 5331-01-601-8556
FSC Code: 5331
MPN: 310802

5331-01-602-0966 (PM-4963-AX)

NIIN: 01-602-0966
In stock
NSN: 5331-01-602-0966
FSC Code: 5331
MPN: PM4963AX

5331-01-602-0970 (MA-1040-C)

NIIN: 01-602-0970
In stock
NSN: 5331-01-602-0970
FSC Code: 5331
MPN: MA1040C

5331-01-602-0680 (FFP102 026 25)

NIIN: 01-602-0680
In stock
NSN: 5331-01-602-0680
FSC Code: 5331
MPN: FFP10202625

5331-01-602-0355 (1151154)

NIIN: 01-602-0355
In stock
NSN: 5331-01-602-0355
FSC Code: 5331
MPN: 1151154

5331-01-602-0348 (1171243)

NIIN: 01-602-0348
In stock
NSN: 5331-01-602-0348
FSC Code: 5331
MPN: 1171243

5331-01-602-0259 (028-13867-000)

NIIN: 01-602-0259
In stock
NSN: 5331-01-602-0259
FSC Code: 5331
MPN: 02813867000

5331-01-602-0224 (U-90166 REV 3 ITEM 10)

NIIN: 01-602-0224
In stock
NSN: 5331-01-602-0224
FSC Code: 5331
MPN: U90166REV3ITEM10

5331-01-601-9875 (265840 ITEM 11 REV)

NIIN: 01-601-9875
In stock
NSN: 5331-01-601-9875
FSC Code: 5331
MPN: 265840ITEM11REV

5331-01-601-9866 (2357012393)

NIIN: 01-601-9866
In stock
NSN: 5331-01-601-9866
FSC Code: 5331
MPN: 2357012393

5331-01-601-8495 (WEZF0A0332)

NIIN: 01-601-8495
In stock
NSN: 5331-01-601-8495
FSC Code: 5331
MPN: WEZF0A0332

5331-01-601-8376 (AN-2.0-125-SS ITEM 5)

NIIN: 01-601-8376
In stock
NSN: 5331-01-601-8376
FSC Code: 5331
MPN: AN20125SSITEM5

5331-01-602-6111 (125865)

NIIN: 01-602-6111
In stock
NSN: 5331-01-602-6111
FSC Code: 5331
MPN: 125865