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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.

5331-01-151-8274 (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

5331-01-294-4231 (5-26736)

NIIN: 01-294-4231
In stock
NSN: 5331-01-294-4231
FSC Code: 5331
MPN: 526736

5331-00-409-3680 (5-264S604-70)

NIIN: 00-409-3680
In stock
NSN: 5331-00-409-3680
FSC Code: 5331
MPN: 5264S60470

5331-01-567-2857 (19744APC42)

NIIN: 01-567-2857
In stock
NSN: 5331-01-567-2857
FSC Code: 5331
MPN: 19744APC42

5331-01-567-2856 (19744APC41)

NIIN: 01-567-2856
In stock
NSN: 5331-01-567-2856
FSC Code: 5331
MPN: 19744APC41

5331-01-198-8093 (52574-1)

NIIN: 01-198-8093
In stock
NSN: 5331-01-198-8093
FSC Code: 5331
MPN: 525741

5331-01-137-6904 (525648-02)

NIIN: 01-137-6904
In stock
NSN: 5331-01-137-6904
FSC Code: 5331
MPN: 52564802

5331-01-312-7155 (52561B330)

NIIN: 01-312-7155
In stock
NSN: 5331-01-312-7155
FSC Code: 5331
MPN: 52561B330

5331-01-114-7977 (52561M212)

NIIN: 01-114-7977
In stock
NSN: 5331-01-114-7977
FSC Code: 5331
MPN: 52561M212

5331-01-200-0444 (52561S349)

NIIN: 01-200-0444
In stock
NSN: 5331-01-200-0444
FSC Code: 5331
MPN: 52561S349

5331-01-020-9262 (52561A437)

NIIN: 01-020-9262
In stock
NSN: 5331-01-020-9262
FSC Code: 5331
MPN: 52561A437

5331-01-114-3816 (52561M112)

NIIN: 01-114-3816
In stock
NSN: 5331-01-114-3816
FSC Code: 5331
MPN: 52561M112

5331-01-310-5190 (52561B118)

NIIN: 01-310-5190
In stock
NSN: 5331-01-310-5190
FSC Code: 5331
MPN: 52561B118

5331-01-200-0459 (52561A462)

NIIN: 01-200-0459
In stock
NSN: 5331-01-200-0459
FSC Code: 5331
MPN: 52561A462

5331-01-236-6211 (52561A342)

NIIN: 01-236-6211
In stock
NSN: 5331-01-236-6211
FSC Code: 5331
MPN: 52561A342

5331-01-080-9066 (52561A346)

NIIN: 01-080-9066
In stock
NSN: 5331-01-080-9066
FSC Code: 5331
MPN: 52561A346

5331-01-054-2371 (52561A346)

NIIN: 01-054-2371
In stock
NSN: 5331-01-054-2371
FSC Code: 5331
MPN: 52561A346

5331-01-101-2474 (52561A430)

NIIN: 01-101-2474
In stock
NSN: 5331-01-101-2474
FSC Code: 5331
MPN: 52561A430

5331-01-020-9260 (52561A349)

NIIN: 01-020-9260
In stock
NSN: 5331-01-020-9260
FSC Code: 5331
MPN: 52561A349

5331-01-310-3897 (52561A333)

NIIN: 01-310-3897
In stock
NSN: 5331-01-310-3897
FSC Code: 5331
MPN: 52561A333

5331-01-126-0865 (52561A112)

NIIN: 01-126-0865
In stock
NSN: 5331-01-126-0865
FSC Code: 5331
MPN: 52561A112

5331-01-310-3896 (52560A073)

NIIN: 01-310-3896
In stock
NSN: 5331-01-310-3896
FSC Code: 5331
MPN: 52560A073

5331-01-213-6764 (52561A211)

NIIN: 01-213-6764
In stock
NSN: 5331-01-213-6764
FSC Code: 5331
MPN: 52561A211

5331-01-309-3632 (52561A123)

NIIN: 01-309-3632
In stock
NSN: 5331-01-309-3632
FSC Code: 5331
MPN: 52561A123

5331-01-309-3631 (52561A118)

NIIN: 01-309-3631
In stock
NSN: 5331-01-309-3631
FSC Code: 5331
MPN: 52561A118

5331-01-287-2926 (52561A235)

NIIN: 01-287-2926
In stock
NSN: 5331-01-287-2926
FSC Code: 5331
MPN: 52561A235