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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.

5331-01-338-5558 (NS92104CM40)

NIIN: 01-338-5558
In stock
NSN: 5331-01-338-5558
FSC Code: 5331
MPN: NS92104CM40

5331-01-313-2973 (NS72104CB20)

NIIN: 01-313-2973
In stock
NSN: 5331-01-313-2973
FSC Code: 5331
MPN: NS72104CB20

5331-01-323-2709 (NS72106CM4S-8)

NIIN: 01-323-2709
In stock
NSN: 5331-01-323-2709
FSC Code: 5331
MPN: NS72106CM4S8

5331-01-312-0160 (NS71104CM40-6)

NIIN: 01-312-0160
In stock
NSN: 5331-01-312-0160
FSC Code: 5331
MPN: NS71104CM406

5331-01-214-1922 (NS-4038)

NIIN: 01-214-1922
In stock
NSN: 5331-01-214-1922
FSC Code: 5331
MPN: NS4038

5331-00-397-4446 (NS4120-9)

NIIN: 00-397-4446
In stock
NSN: 5331-00-397-4446
FSC Code: 5331
MPN: NS41209

5331-01-327-3360 (NS-249)

NIIN: 01-327-3360
In stock
NSN: 5331-01-327-3360
FSC Code: 5331
MPN: NS249

5331-01-338-6650 (NS12304CC40)

NIIN: 01-338-6650
In stock
NSN: 5331-01-338-6650
FSC Code: 5331
MPN: NS12304CC40

5331-01-465-8425 (ANBP6.2E21G00113PP)

NIIN: 01-465-8425
In stock
NSN: 5331-01-465-8425
FSC Code: 5331
MPN: ANBP62E21G00113PP

5331-01-429-5091 (AN-8.0-51-IPC5)

NIIN: 01-429-5091
In stock
NSN: 5331-01-429-5091
FSC Code: 5331
MPN: AN8051IPC5

5331-01-430-9218 (AN-8.0-52-H)

NIIN: 01-430-9218
In stock
NSN: 5331-01-430-9218
FSC Code: 5331
MPN: AN8052H

5331-01-101-2514 (NP5045001)

NIIN: 01-101-2514
In stock
NSN: 5331-01-101-2514
FSC Code: 5331
MPN: NP5045001

5331-01-101-0596 (NP5045002)

NIIN: 01-101-0596
In stock
NSN: 5331-01-101-0596
FSC Code: 5331
MPN: NP5045002

5331-01-101-2515 (NP5009004)

NIIN: 01-101-2515
In stock
NSN: 5331-01-101-2515
FSC Code: 5331
MPN: NP5009004

5331-01-285-7668 (NO7-20004)

NIIN: 01-285-7668
In stock
NSN: 5331-01-285-7668
FSC Code: 5331
MPN: NO720004

5331-01-274-6006 (NO)

NIIN: 01-274-6006
In stock
NSN: 5331-01-274-6006
FSC Code: 5331
MPN: NO

5331-01-285-7669 (NO7-20009)

NIIN: 01-285-7669
In stock
NSN: 5331-01-285-7669
FSC Code: 5331
MPN: NO720009

5331-01-314-0004 (N-NB252251-0800-15)

NIIN: 01-314-0004
In stock
NSN: 5331-01-314-0004
FSC Code: 5331
MPN: NNB252251080015

5331-01-328-3726 (N-NB25025-12-10)

NIIN: 01-328-3726
In stock
NSN: 5331-01-328-3726
FSC Code: 5331
MPN: NNB250251210

5331-01-324-2531 (N-NB25025-SP)

NIIN: 01-324-2531
In stock
NSN: 5331-01-324-2531
FSC Code: 5331
MPN: NNB25025SP

5331-01-223-3515 (NN123894)

NIIN: 01-223-3515
In stock
NSN: 5331-01-223-3515
FSC Code: 5331
MPN: NN123894

5331-01-413-0696 (AN6230-B5)

NIIN: 01-413-0696
In stock
NSN: 5331-01-413-0696
FSC Code: 5331
MPN: AN6230B5

5331-01-569-0103 (AS28775-041)

NIIN: 01-569-0103
In stock
NSN: 5331-01-569-0103
FSC Code: 5331
MPN: AS28775041

5331-01-461-5967 (AN6227B49)

NIIN: 01-461-5967
In stock
NSN: 5331-01-461-5967
FSC Code: 5331
MPN: AN6227B49

5331-01-492-0117 (AN6227-33)

NIIN: 01-492-0117
In stock
NSN: 5331-01-492-0117
FSC Code: 5331
MPN: AN622733

5331-01-424-1440 (AN-6.0-53-IPC5)

NIIN: 01-424-1440
In stock
NSN: 5331-01-424-1440
FSC Code: 5331
MPN: AN6053IPC5

5331-01-139-4698 (NMP1148PC9)

NIIN: 01-139-4698
In stock
NSN: 5331-01-139-4698
FSC Code: 5331
MPN: NMP1148PC9

5331-01-429-5097 (AN-6.0-51-UPC5)

NIIN: 01-429-5097
In stock
NSN: 5331-01-429-5097
FSC Code: 5331
MPN: AN6051UPC5

5331-01-477-1032 (AN6227-36)

NIIN: 01-477-1032
In stock
NSN: 5331-01-477-1032
FSC Code: 5331
MPN: AN622736

5331-01-454-4772 (AN-5.0-52-E)

NIIN: 01-454-4772
In stock
NSN: 5331-01-454-4772
FSC Code: 5331
MPN: AN5052E

5331-01-393-2636 (BG-5.0-125F-01B1-0)

NIIN: 01-393-2636
In stock
NSN: 5331-01-393-2636
FSC Code: 5331
MPN: BG50125F01B10

5331-01-431-9954 (AN-4.0-53-1)

NIIN: 01-431-9954
In stock
NSN: 5331-01-431-9954
FSC Code: 5331
MPN: AN40531

5331-01-451-6866 (AN-4.0-52-D1)

NIIN: 01-451-6866
In stock
NSN: 5331-01-451-6866
FSC Code: 5331
MPN: AN4052D1

5331-01-359-2153 (TG-4.0-125F-01B1-0)

NIIN: 01-359-2153
In stock
NSN: 5331-01-359-2153
FSC Code: 5331
MPN: TG40125F01B10

5331-01-421-2016 (MPE-33-SW2/P0C0)

NIIN: 01-421-2016
In stock
NSN: 5331-01-421-2016
FSC Code: 5331
MPN: MPE33SW2P0C0

5331-00-805-6048 (NM84607)

NIIN: 00-805-6048
In stock
NSN: 5331-00-805-6048
FSC Code: 5331
MPN: NM84607

5331-00-802-1876 (NM78483)

NIIN: 00-802-1876
In stock
NSN: 5331-00-802-1876
FSC Code: 5331
MPN: NM78483

5331-00-801-6920 (NM618802)

NIIN: 00-801-6920
In stock
NSN: 5331-00-801-6920
FSC Code: 5331
MPN: NM618802

5331-01-359-2152 (TG-3.0-125F-01B1-0)

NIIN: 01-359-2152
In stock
NSN: 5331-01-359-2152
FSC Code: 5331
MPN: TG30125F01B10

5331-01-452-0891 (AN-3.0-52-D1)

NIIN: 01-452-0891
In stock
NSN: 5331-01-452-0891
FSC Code: 5331
MPN: AN3052D1

5331-01-382-7580 (TG-2.5-125F-01-Y-0)

NIIN: 01-382-7580
In stock
NSN: 5331-01-382-7580
FSC Code: 5331
MPN: TG25125F01Y0

5331-01-454-4782 (AN-2.5.0-52-F)

NIIN: 01-454-4782
In stock
NSN: 5331-01-454-4782
FSC Code: 5331
MPN: AN25052F

5331-01-454-4357 (AN-1.5-125F-B-G)

NIIN: 01-454-4357
In stock
NSN: 5331-01-454-4357
FSC Code: 5331
MPN: AN15125FBG

5331-01-454-4362 (AN-1.5-125F-B-G)

NIIN: 01-454-4362
In stock
NSN: 5331-01-454-4362
FSC Code: 5331
MPN: AN15125FBG

5331-01-386-0932 (TG-1.5-125-01-B1-0)

NIIN: 01-386-0932
In stock
NSN: 5331-01-386-0932
FSC Code: 5331
MPN: TG1512501B10

5331-01-314-6726 (NK2258)

NIIN: 01-314-6726
In stock
NSN: 5331-01-314-6726
FSC Code: 5331
MPN: NK2258

5331-01-290-6074 (NK-1683-4)

NIIN: 01-290-6074
In stock
NSN: 5331-01-290-6074
FSC Code: 5331
MPN: NK16834

5331-01-467-0678 (AMS-R-83485/1)

NIIN: 01-467-0678
In stock
NSN: 5331-01-467-0678
FSC Code: 5331
MPN: AMSR834851