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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.

5331-01-481-3948 (CW-2300DFITEM23-621)

NIIN: 01-481-3948
In stock
NSN: 5331-01-481-3948
FSC Code: 5331
MPN: CW2300DFITEM23621

5331-01-572-1849 (CW-2300DHPART23-006)

NIIN: 01-572-1849
In stock
NSN: 5331-01-572-1849
FSC Code: 5331
MPN: CW2300DHPART23006

5331-01-572-1848 (CW-2300DHPART23-004)

NIIN: 01-572-1848
In stock
NSN: 5331-01-572-1848
FSC Code: 5331
MPN: CW2300DHPART23004

5331-01-362-4440 (CW-2300DCITEM23-650)

NIIN: 01-362-4440
In stock
NSN: 5331-01-362-4440
FSC Code: 5331
MPN: CW2300DCITEM23650

5331-01-481-3944 (CW-2300DFITEM23-619)

NIIN: 01-481-3944
In stock
NSN: 5331-01-481-3944
FSC Code: 5331
MPN: CW2300DFITEM23619

5331-01-481-3950 (CW-2300DFITEM23-620)

NIIN: 01-481-3950
In stock
NSN: 5331-01-481-3950
FSC Code: 5331
MPN: CW2300DFITEM23620

5331-01-488-9305 (CW-2300DFPN23-623)

NIIN: 01-488-9305
In stock
NSN: 5331-01-488-9305
FSC Code: 5331
MPN: CW2300DFPN23623

5331-01-572-1851 (CW-2300DHPART23-673)

NIIN: 01-572-1851
In stock
NSN: 5331-01-572-1851
FSC Code: 5331
MPN: CW2300DHPART23673

5331-01-353-2070 (CW-2300CW)

NIIN: 01-353-2070
In stock
NSN: 5331-01-353-2070
FSC Code: 5331
MPN: CW2300CW

5331-01-353-2600 (CVN-101E)

NIIN: 01-353-2600
In stock
NSN: 5331-01-353-2600
FSC Code: 5331
MPN: CVN101E

5331-01-236-6128 (SKR5-512-12)

NIIN: 01-236-6128
In stock
NSN: 5331-01-236-6128
FSC Code: 5331
MPN: SKR551212

5331-01-312-7160 (SKE-29209-8)

NIIN: 01-312-7160
In stock
NSN: 5331-01-312-7160
FSC Code: 5331
MPN: SKE292098

5331-01-310-5915 (SKA835508)

NIIN: 01-310-5915
In stock
NSN: 5331-01-310-5915
FSC Code: 5331
MPN: SKA835508

5331-00-816-4698 (SKA152345)

NIIN: 00-816-4698
In stock
NSN: 5331-00-816-4698
FSC Code: 5331
MPN: SKA152345

5331-00-464-8530 (SK66-125EM)

NIIN: 00-464-8530
In stock
NSN: 5331-00-464-8530
FSC Code: 5331
MPN: SK66125EM

5331-01-205-4260 (SK5116-N)

NIIN: 01-205-4260
In stock
NSN: 5331-01-205-4260
FSC Code: 5331
MPN: SK5116N

5331-00-585-1363 (SK33178-1)

NIIN: 00-585-1363
In stock
NSN: 5331-00-585-1363
FSC Code: 5331
MPN: SK331781

5331-01-088-2745 (SIZE016H)

NIIN: 01-088-2745
In stock
NSN: 5331-01-088-2745
FSC Code: 5331
MPN: SIZE016H

5331-00-373-0743 (SH994)

NIIN: 00-373-0743
In stock
NSN: 5331-00-373-0743
FSC Code: 5331
MPN: SH994

5331-00-915-1141 (SH75)

NIIN: 00-915-1141
In stock
NSN: 5331-00-915-1141
FSC Code: 5331
MPN: SH75

5331-01-266-4651 (SG-4600)

NIIN: 01-266-4651
In stock
NSN: 5331-01-266-4651
FSC Code: 5331
MPN: SG4600

5331-01-171-7990 (SFR-2F)

NIIN: 01-171-7990
In stock
NSN: 5331-01-171-7990
FSC Code: 5331
MPN: SFR2F

5331-01-169-9275 (SFR-1F)

NIIN: 01-169-9275
In stock
NSN: 5331-01-169-9275
FSC Code: 5331
MPN: SFR1F

5331-00-432-4957 (SF5375PC28)

NIIN: 00-432-4957
In stock
NSN: 5331-00-432-4957
FSC Code: 5331
MPN: SF5375PC28

5331-01-461-8441 (CVC4232-4)

NIIN: 01-461-8441
In stock
NSN: 5331-01-461-8441
FSC Code: 5331
MPN: CVC42324

5331-01-291-5077 (SERUR22-4)

NIIN: 01-291-5077
In stock
NSN: 5331-01-291-5077
FSC Code: 5331
MPN: SERUR224

5331-01-447-6731 (CV6V-2)

NIIN: 01-447-6731
In stock
NSN: 5331-01-447-6731
FSC Code: 5331
MPN: CV6V2

5331-01-447-6732 (CV4V-2)

NIIN: 01-447-6732
In stock
NSN: 5331-01-447-6732
FSC Code: 5331
MPN: CV4V2

5331-01-454-6219 (CU77)

NIIN: 01-454-6219
In stock
NSN: 5331-01-454-6219
FSC Code: 5331
MPN: CU77

5331-01-031-7109 (SE713)

NIIN: 01-031-7109
In stock
NSN: 5331-01-031-7109
FSC Code: 5331
MPN: SE713

5331-01-469-8244 (CU)

NIIN: 01-469-8244
In stock
NSN: 5331-01-469-8244
FSC Code: 5331
MPN: CU

5331-01-299-8214 (SDD-16019)

NIIN: 01-299-8214
In stock
NSN: 5331-01-299-8214
FSC Code: 5331
MPN: SDD16019

5331-01-299-8215 (SDD-16019)

NIIN: 01-299-8215
In stock
NSN: 5331-01-299-8215
FSC Code: 5331
MPN: SDD16019

5331-01-210-1540 (SDC-143-003)

NIIN: 01-210-1540
In stock
NSN: 5331-01-210-1540
FSC Code: 5331
MPN: SDC143003

5331-01-440-0064 (CS-LS-50-A301)

NIIN: 01-440-0064
In stock
NSN: 5331-01-440-0064
FSC Code: 5331
MPN: CSLS50A301

5331-01-440-0058 (CS-LS-50-A301)

NIIN: 01-440-0058
In stock
NSN: 5331-01-440-0058
FSC Code: 5331
MPN: CSLS50A301

5331-01-440-0090 (CS-LS-50-A301)

NIIN: 01-440-0090
In stock
NSN: 5331-01-440-0090
FSC Code: 5331
MPN: CSLS50A301

5331-01-421-6112 (CS-LS-50-SV-A301)

NIIN: 01-421-6112
In stock
NSN: 5331-01-421-6112
FSC Code: 5331
MPN: CSLS50SVA301

5331-01-421-6114 (CS-LS-50-SV-A301)

NIIN: 01-421-6114
In stock
NSN: 5331-01-421-6114
FSC Code: 5331
MPN: CSLS50SVA301

5331-01-177-0844 (SDC-140-008)

NIIN: 01-177-0844
In stock
NSN: 5331-01-177-0844
FSC Code: 5331
MPN: SDC140008

5331-01-421-6232 (CS-LS-50-SV-A301)

NIIN: 01-421-6232
In stock
NSN: 5331-01-421-6232
FSC Code: 5331
MPN: CSLS50SVA301

5331-01-440-0048 (CS-LS-50-A301)

NIIN: 01-440-0048
In stock
NSN: 5331-01-440-0048
FSC Code: 5331
MPN: CSLS50A301

5331-01-433-8110 (CSE-29)

NIIN: 01-433-8110
In stock
NSN: 5331-01-433-8110
FSC Code: 5331
MPN: CSE29

5331-01-466-8029 (CSD003863ITEM27)

NIIN: 01-466-8029
In stock
NSN: 5331-01-466-8029
FSC Code: 5331
MPN: CSD003863ITEM27

5331-00-911-7074 (SD73-127)

NIIN: 00-911-7074
In stock
NSN: 5331-00-911-7074
FSC Code: 5331
MPN: SD73127

5331-01-277-6133 (SD73X224)

NIIN: 01-277-6133
In stock
NSN: 5331-01-277-6133
FSC Code: 5331
MPN: SD73X224

5331-01-240-1659 (SD2807)

NIIN: 01-240-1659
In stock
NSN: 5331-01-240-1659
FSC Code: 5331
MPN: SD2807

5331-01-233-2842 (SD2807)

NIIN: 01-233-2842
In stock
NSN: 5331-01-233-2842
FSC Code: 5331
MPN: SD2807