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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.

5331-01-308-4679 (531-10091-1)

NIIN: 01-308-4679
In stock
NSN: 5331-01-308-4679
FSC Code: 5331
MPN: 531100911

5331-01-284-7871 (53100100-1)

NIIN: 01-284-7871
In stock
NSN: 5331-01-284-7871
FSC Code: 5331
MPN: 531001001

5331-01-211-0461 (5308-49)

NIIN: 01-211-0461
In stock
NSN: 5331-01-211-0461
FSC Code: 5331
MPN: 530849

5331-00-234-4860 (530-665)

NIIN: 00-234-4860
In stock
NSN: 5331-00-234-4860
FSC Code: 5331
MPN: 530665

5331-01-222-7963 (5304-99)

NIIN: 01-222-7963
In stock
NSN: 5331-01-222-7963
FSC Code: 5331
MPN: 530499

5331-01-221-9637 (5304-77)

NIIN: 01-221-9637
In stock
NSN: 5331-01-221-9637
FSC Code: 5331
MPN: 530477

5331-00-103-8341 (530-476)

NIIN: 00-103-8341
In stock
NSN: 5331-00-103-8341
FSC Code: 5331
MPN: 530476

5331-00-469-8330 (530-469)

NIIN: 00-469-8330
In stock
NSN: 5331-00-469-8330
FSC Code: 5331
MPN: 530469

5331-00-469-8331 (530-471)

NIIN: 00-469-8331
In stock
NSN: 5331-00-469-8331
FSC Code: 5331
MPN: 530471

5331-01-366-5829 (19A700127P3)

NIIN: 01-366-5829
In stock
NSN: 5331-01-366-5829
FSC Code: 5331
MPN: 19A700127P3

5331-00-103-8340 (530-466)

NIIN: 00-103-8340
In stock
NSN: 5331-00-103-8340
FSC Code: 5331
MPN: 530466

5331-00-103-8338 (530-458)

NIIN: 00-103-8338
In stock
NSN: 5331-00-103-8338
FSC Code: 5331
MPN: 530458

5331-00-081-6393 (530-430)

NIIN: 00-081-6393
In stock
NSN: 5331-00-081-6393
FSC Code: 5331
MPN: 530430

5331-01-512-5683 (422-210-040)

NIIN: 01-512-5683
In stock
NSN: 5331-01-512-5683
FSC Code: 5331
MPN: 422210040

5331-01-220-7567 (5303-59)

NIIN: 01-220-7567
In stock
NSN: 5331-01-220-7567
FSC Code: 5331
MPN: 530359

5331-01-458-5474 (19A11C06)

NIIN: 01-458-5474
In stock
NSN: 5331-01-458-5474
FSC Code: 5331
MPN: 19A11C06

5331-00-081-3986 (5303-0600)

NIIN: 00-081-3986
In stock
NSN: 5331-00-081-3986
FSC Code: 5331
MPN: 53030600

5331-00-800-7258 (5303-49)

NIIN: 00-800-7258
In stock
NSN: 5331-00-800-7258
FSC Code: 5331
MPN: 530349

5331-00-983-8737 (5302-0900)

NIIN: 00-983-8737
In stock
NSN: 5331-00-983-8737
FSC Code: 5331
MPN: 53020900

5331-01-524-0182 (199-9751)

NIIN: 01-524-0182
In stock
NSN: 5331-01-524-0182
FSC Code: 5331
MPN: 1999751

5331-00-835-2765 (5302-0800)

NIIN: 00-835-2765
In stock
NSN: 5331-00-835-2765
FSC Code: 5331
MPN: 53020800

5331-00-618-3736 (5302-0100)

NIIN: 00-618-3736
In stock
NSN: 5331-00-618-3736
FSC Code: 5331
MPN: 53020100

5331-01-526-1896 (199-9252)

NIIN: 01-526-1896
In stock
NSN: 5331-01-526-1896
FSC Code: 5331
MPN: 1999252

5331-01-208-2917 (530-10090-1)

NIIN: 01-208-2917
In stock
NSN: 5331-01-208-2917
FSC Code: 5331
MPN: 530100901

5331-01-151-8273 (530-10049-1)

NIIN: 01-151-8273
In stock
NSN: 5331-01-151-8273
FSC Code: 5331
MPN: 530100491

5331-01-151-8274 (530-10036-1)

NIIN: 01-151-8274
In stock
NSN: 5331-01-151-8274
FSC Code: 5331
MPN: 530100361

5331-00-689-8110 (52B2071-1)

NIIN: 00-689-8110
In stock
NSN: 5331-00-689-8110
FSC Code: 5331
MPN: 52B20711

5331-00-585-8029 (52A13D13-11)

NIIN: 00-585-8029
In stock
NSN: 5331-00-585-8029
FSC Code: 5331
MPN: 52A13D1311

5331-00-731-7741 (52912-080)

NIIN: 00-731-7741
In stock
NSN: 5331-00-731-7741
FSC Code: 5331
MPN: 52912080

5331-00-346-9785 (52910-12)

NIIN: 00-346-9785
In stock
NSN: 5331-00-346-9785
FSC Code: 5331
MPN: 5291012

5331-00-445-3399 (52905-MIL-G-22050)

NIIN: 00-445-3399
In stock
NSN: 5331-00-445-3399
FSC Code: 5331
MPN: 52905MILG22050

5331-01-563-3731 (199-0759)

NIIN: 01-563-3731
In stock
NSN: 5331-01-563-3731
FSC Code: 5331
MPN: 1990759

5331-01-563-3728 (199-0700)

NIIN: 01-563-3728
In stock
NSN: 5331-01-563-3728
FSC Code: 5331
MPN: 1990700

5331-01-526-1922 (199-0662)

NIIN: 01-526-1922
In stock
NSN: 5331-01-526-1922
FSC Code: 5331
MPN: 1990662

5331-00-500-1783 (52840PC8)

NIIN: 00-500-1783
In stock
NSN: 5331-00-500-1783
FSC Code: 5331
MPN: 52840PC8

5331-00-500-1781 (52840PC7)

NIIN: 00-500-1781
In stock
NSN: 5331-00-500-1781
FSC Code: 5331
MPN: 52840PC7

5331-00-121-2479 (5-279)

NIIN: 00-121-2479
In stock
NSN: 5331-00-121-2479
FSC Code: 5331
MPN: 5279

5331-01-092-0256 (527747001-2001)

NIIN: 01-092-0256
In stock
NSN: 5331-01-092-0256
FSC Code: 5331
MPN: 5277470012001

5331-01-165-5569 (527684-1)

NIIN: 01-165-5569
In stock
NSN: 5331-01-165-5569
FSC Code: 5331
MPN: 5276841

5331-01-218-9478 (52-77-0115-415)

NIIN: 01-218-9478
In stock
NSN: 5331-01-218-9478
FSC Code: 5331
MPN: 52770115415

5331-99-150-8954 (BS1806-028NBR.87)

NIIN: 99-150-8954
In stock
NSN: 5331-99-150-8954
FSC Code: 5331
MPN: BS1806028NBR87

5331-01-086-9902 (527-4643344)

NIIN: 01-086-9902
In stock
NSN: 5331-01-086-9902
FSC Code: 5331
MPN: 5274643344

5331-01-086-9901 (527-4643344)

NIIN: 01-086-9901
In stock
NSN: 5331-01-086-9901
FSC Code: 5331
MPN: 5274643344

5331-01-200-6284 (52725A020)

NIIN: 01-200-6284
In stock
NSN: 5331-01-200-6284
FSC Code: 5331
MPN: 52725A020

5331-01-558-6974 (19812-412.04)

NIIN: 01-558-6974
In stock
NSN: 5331-01-558-6974
FSC Code: 5331
MPN: 1981241204

5331-01-558-6975 (19812-412.10)

NIIN: 01-558-6975
In stock
NSN: 5331-01-558-6975
FSC Code: 5331
MPN: 1981241210

5331-01-327-8888 (5-270518)

NIIN: 01-327-8888
In stock
NSN: 5331-01-327-8888
FSC Code: 5331
MPN: 5270518

5331-01-108-6215 (5268341-1)

NIIN: 01-108-6215
In stock
NSN: 5331-01-108-6215
FSC Code: 5331
MPN: 52683411