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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.

5331-01-112-7965 (S9027G172)

NIIN: 01-112-7965
In stock
NSN: 5331-01-112-7965
FSC Code: 5331
MPN: S9027G172

5331-01-179-7354 (S9028D902)

NIIN: 01-179-7354
In stock
NSN: 5331-01-179-7354
FSC Code: 5331
MPN: S9028D902

5331-00-001-8189 (S9028A904)

NIIN: 00-001-8189
In stock
NSN: 5331-00-001-8189
FSC Code: 5331
MPN: S9028A904

5331-01-202-6886 (S9028A902)

NIIN: 01-202-6886
In stock
NSN: 5331-01-202-6886
FSC Code: 5331
MPN: S9028A902

5331-00-447-6234 (S9027F029)

NIIN: 00-447-6234
In stock
NSN: 5331-00-447-6234
FSC Code: 5331
MPN: S9027F029

5331-00-879-6656 (S9027D011)

NIIN: 00-879-6656
In stock
NSN: 5331-00-879-6656
FSC Code: 5331
MPN: S9027D011

5331-00-235-0266 (S9027B025)

NIIN: 00-235-0266
In stock
NSN: 5331-00-235-0266
FSC Code: 5331
MPN: S9027B025

5331-00-235-0267 (S9027B011)

NIIN: 00-235-0267
In stock
NSN: 5331-00-235-0267
FSC Code: 5331
MPN: S9027B011

5331-00-526-2000 (S9027E016)

NIIN: 00-526-2000
In stock
NSN: 5331-00-526-2000
FSC Code: 5331
MPN: S9027E016

5331-01-475-3825 (CH19111)

NIIN: 01-475-3825
In stock
NSN: 5331-01-475-3825
FSC Code: 5331
MPN: CH19111

5331-01-284-1280 (S9027E010)

NIIN: 01-284-1280
In stock
NSN: 5331-01-284-1280
FSC Code: 5331
MPN: S9027E010

5331-00-235-0265 (S9027B021)

NIIN: 00-235-0265
In stock
NSN: 5331-00-235-0265
FSC Code: 5331
MPN: S9027B021

5331-00-235-0268 (S9027B017)

NIIN: 00-235-0268
In stock
NSN: 5331-00-235-0268
FSC Code: 5331
MPN: S9027B017

5331-00-240-0135 (S9027B012)

NIIN: 00-240-0135
In stock
NSN: 5331-00-240-0135
FSC Code: 5331
MPN: S9027B012

5331-01-211-0459 (S9026L229)

NIIN: 01-211-0459
In stock
NSN: 5331-01-211-0459
FSC Code: 5331
MPN: S9026L229

5331-01-474-0447 (TH111690)

NIIN: 01-474-0447
In stock
NSN: 5331-01-474-0447
FSC Code: 5331
MPN: TH111690

5331-01-561-4441 (CH21901)

NIIN: 01-561-4441
In stock
NSN: 5331-01-561-4441
FSC Code: 5331
MPN: CH21901

5331-01-179-7355 (S9026M143)

NIIN: 01-179-7355
In stock
NSN: 5331-01-179-7355
FSC Code: 5331
MPN: S9026M143

5331-01-511-8079 (CH18696)

NIIN: 01-511-8079
In stock
NSN: 5331-01-511-8079
FSC Code: 5331
MPN: CH18696

5331-01-475-3827 (CH17167)

NIIN: 01-475-3827
In stock
NSN: 5331-01-475-3827
FSC Code: 5331
MPN: CH17167

5331-01-475-3808 (CH14701)

NIIN: 01-475-3808
In stock
NSN: 5331-01-475-3808
FSC Code: 5331
MPN: CH14701

5331-01-095-5741 (S9026L113)

NIIN: 01-095-5741
In stock
NSN: 5331-01-095-5741
FSC Code: 5331
MPN: S9026L113

5331-00-001-6690 (S9026L028)

NIIN: 00-001-6690
In stock
NSN: 5331-00-001-6690
FSC Code: 5331
MPN: S9026L028

5331-01-475-3820 (CH14634)

NIIN: 01-475-3820
In stock
NSN: 5331-01-475-3820
FSC Code: 5331
MPN: CH14634

5331-01-561-4447 (CH12-0.75-25)

NIIN: 01-561-4447
In stock
NSN: 5331-01-561-4447
FSC Code: 5331
MPN: CH1207525

5331-01-166-4015 (S9026L155)

NIIN: 01-166-4015
In stock
NSN: 5331-01-166-4015
FSC Code: 5331
MPN: S9026L155

5331-01-095-5742 (S9026L112)

NIIN: 01-095-5742
In stock
NSN: 5331-01-095-5742
FSC Code: 5331
MPN: S9026L112

5331-01-561-4437 (CH12200)

NIIN: 01-561-4437
In stock
NSN: 5331-01-561-4437
FSC Code: 5331
MPN: CH12200

5331-01-500-8055 (CH11570)

NIIN: 01-500-8055
In stock
NSN: 5331-01-500-8055
FSC Code: 5331
MPN: CH11570

5331-01-031-5120 (S9026K149)

NIIN: 01-031-5120
In stock
NSN: 5331-01-031-5120
FSC Code: 5331
MPN: S9026K149

5331-00-001-6688 (S9026L020)

NIIN: 00-001-6688
In stock
NSN: 5331-00-001-6688
FSC Code: 5331
MPN: S9026L020

5331-01-037-6129 (S9026K127)

NIIN: 01-037-6129
In stock
NSN: 5331-01-037-6129
FSC Code: 5331
MPN: S9026K127

5331-01-475-4323 (CH11573)

NIIN: 01-475-4323
In stock
NSN: 5331-01-475-4323
FSC Code: 5331
MPN: CH11573

5331-01-205-5045 (S9026K262)

NIIN: 01-205-5045
In stock
NSN: 5331-01-205-5045
FSC Code: 5331
MPN: S9026K262

5331-01-475-3807 (CH11436)

NIIN: 01-475-3807
In stock
NSN: 5331-01-475-3807
FSC Code: 5331
MPN: CH11436

5331-00-253-4972 (S9026L011)

NIIN: 00-253-4972
In stock
NSN: 5331-00-253-4972
FSC Code: 5331
MPN: S9026L011

5331-00-001-8186 (S9026L039)

NIIN: 00-001-8186
In stock
NSN: 5331-00-001-8186
FSC Code: 5331
MPN: S9026L039

5331-00-001-8178 (S9026K015)

NIIN: 00-001-8178
In stock
NSN: 5331-00-001-8178
FSC Code: 5331
MPN: S9026K015

5331-01-022-1989 (S9026K114)

NIIN: 01-022-1989
In stock
NSN: 5331-01-022-1989
FSC Code: 5331
MPN: S9026K114

5331-01-021-6884 (S9026K120)

NIIN: 01-021-6884
In stock
NSN: 5331-01-021-6884
FSC Code: 5331
MPN: S9026K120

5331-01-561-4440 (CH01800)

NIIN: 01-561-4440
In stock
NSN: 5331-01-561-4440
FSC Code: 5331
MPN: CH01800

5331-99-062-1883 (CH100-15-015)

NIIN: 99-062-1883
In stock
NSN: 5331-99-062-1883
FSC Code: 5331
MPN: CH10015015

5331-01-562-7051 (CH10060)

NIIN: 01-562-7051
In stock
NSN: 5331-01-562-7051
FSC Code: 5331
MPN: CH10060

5331-01-352-1200 (CH100-15-015)

NIIN: 01-352-1200
In stock
NSN: 5331-01-352-1200
FSC Code: 5331
MPN: CH10015015

5331-00-435-9148 (S9026K040)

NIIN: 00-435-9148
In stock
NSN: 5331-00-435-9148
FSC Code: 5331
MPN: S9026K040

5331-01-201-8612 (S9026J015)

NIIN: 01-201-8612
In stock
NSN: 5331-01-201-8612
FSC Code: 5331
MPN: S9026J015

5331-01-201-8610 (S9026J010)

NIIN: 01-201-8610
In stock
NSN: 5331-01-201-8610
FSC Code: 5331
MPN: S9026J010

5331-01-201-8608 (S9026J008)

NIIN: 01-201-8608
In stock
NSN: 5331-01-201-8608
FSC Code: 5331
MPN: S9026J008