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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.

5331-01-475-6846 (263.45X2.64MM-80EP)

NIIN: 01-475-6846
In stock
NSN: 5331-01-475-6846
FSC Code: 5331
MPN: 26345X264MM80EP

5331-14-307-8631 (R02620X360AD147)

NIIN: 14-307-8631
In stock
NSN: 5331-14-307-8631
FSC Code: 5331
MPN: R02620X360AD147

5331-01-312-0621 (64-18-WHA)

NIIN: 01-312-0621
In stock
NSN: 5331-01-312-0621
FSC Code: 5331
MPN: 6418WHA

5331-01-292-7129 (64-18-NH-18)

NIIN: 01-292-7129
In stock
NSN: 5331-01-292-7129
FSC Code: 5331
MPN: 6418NH18

5331-01-562-0910 (26-2608-38A)

NIIN: 01-562-0910
In stock
NSN: 5331-01-562-0910
FSC Code: 5331
MPN: 26260838A

5331-01-562-0928 (26-2608-38X)

NIIN: 01-562-0928
In stock
NSN: 5331-01-562-0928
FSC Code: 5331
MPN: 26260838X

5331-01-155-4276 (6410-10-12-0)

NIIN: 01-155-4276
In stock
NSN: 5331-01-155-4276
FSC Code: 5331
MPN: 641010120

5331-01-305-8346 (640-V-128)

NIIN: 01-305-8346
In stock
NSN: 5331-01-305-8346
FSC Code: 5331
MPN: 640V128

5331-00-245-3768 (640888-4)

NIIN: 00-245-3768
In stock
NSN: 5331-00-245-3768
FSC Code: 5331
MPN: 6408884

5331-01-076-9341 (640888-31)

NIIN: 01-076-9341
In stock
NSN: 5331-01-076-9341
FSC Code: 5331
MPN: 64088831

5331-01-078-2823 (640887-1)

NIIN: 01-078-2823
In stock
NSN: 5331-01-078-2823
FSC Code: 5331
MPN: 6408871

5331-01-078-2822 (640888-12)

NIIN: 01-078-2822
In stock
NSN: 5331-01-078-2822
FSC Code: 5331
MPN: 64088812

5331-01-060-9106 (640888-9)

NIIN: 01-060-9106
In stock
NSN: 5331-01-060-9106
FSC Code: 5331
MPN: 6408889

5331-00-845-0358 (640830-26)

NIIN: 00-845-0358
In stock
NSN: 5331-00-845-0358
FSC Code: 5331
MPN: 64083026

5331-01-282-7696 (6407D)

NIIN: 01-282-7696
In stock
NSN: 5331-01-282-7696
FSC Code: 5331
MPN: 6407D

5331-01-501-5582 (2621-927-10)

NIIN: 01-501-5582
In stock
NSN: 5331-01-501-5582
FSC Code: 5331
MPN: 262192710

5331-01-501-5591 (2621-927-10)

NIIN: 01-501-5591
In stock
NSN: 5331-01-501-5591
FSC Code: 5331
MPN: 262192710

5331-01-532-5837 (G547-0002-262190613-91D0)

NIIN: 01-532-5837
In stock
NSN: 5331-01-532-5837
FSC Code: 5331
MPN: G547000226219061391D0

5331-01-468-2655 (26-2156-15)

NIIN: 01-468-2655
In stock
NSN: 5331-01-468-2655
FSC Code: 5331
MPN: 26215615

5331-00-842-2361 (640-520-2118708-16)

NIIN: 00-842-2361
In stock
NSN: 5331-00-842-2361
FSC Code: 5331
MPN: 640520211870816

5331-01-535-4081 (262-1046)

NIIN: 01-535-4081
In stock
NSN: 5331-01-535-4081
FSC Code: 5331
MPN: 2621046

5331-01-253-7141 (64027-94)

NIIN: 01-253-7141
In stock
NSN: 5331-01-253-7141
FSC Code: 5331
MPN: 6402794

5331-01-208-3367 (6400123-4)

NIIN: 01-208-3367
In stock
NSN: 5331-01-208-3367
FSC Code: 5331
MPN: 64001234

5331-01-208-3365 (6400123-2)

NIIN: 01-208-3365
In stock
NSN: 5331-01-208-3365
FSC Code: 5331
MPN: 64001232

5331-01-208-3366 (6400123-3)

NIIN: 01-208-3366
In stock
NSN: 5331-01-208-3366
FSC Code: 5331
MPN: 64001233

5331-00-647-3945 (63XA6PPC34)

NIIN: 00-647-3945
In stock
NSN: 5331-00-647-3945
FSC Code: 5331
MPN: 63XA6PPC34

5331-01-383-6895 (65134-C-304SS-0.25IN-PC14)

NIIN: 01-383-6895
In stock
NSN: 5331-01-383-6895
FSC Code: 5331
MPN: 65134C304SS025INPC14

5331-01-342-7784 (2618049A)

NIIN: 01-342-7784
In stock
NSN: 5331-01-342-7784
FSC Code: 5331
MPN: 2618049A

5331-01-361-2901 (26147-02-154-70)

NIIN: 01-361-2901
In stock
NSN: 5331-01-361-2901
FSC Code: 5331
MPN: 261470215470

5331-01-361-2900 (26147-02-338-70)

NIIN: 01-361-2900
In stock
NSN: 5331-01-361-2900
FSC Code: 5331
MPN: 261470233870

5331-01-449-9918 (N0366-03432-965)

NIIN: 01-449-9918
In stock
NSN: 5331-01-449-9918
FSC Code: 5331
MPN: N036603432965

5331-01-523-3692 (26-12709)

NIIN: 01-523-3692
In stock
NSN: 5331-01-523-3692
FSC Code: 5331
MPN: 2612709

5331-99-829-9936 (AS43003-907)

NIIN: 99-829-9936
In stock
NSN: 5331-99-829-9936
FSC Code: 5331
MPN: AS43003907

5331-99-752-7601 (AS43013-151)

NIIN: 99-752-7601
In stock
NSN: 5331-99-752-7601
FSC Code: 5331
MPN: AS43013151

5331-01-386-2720 (26121-7498)

NIIN: 01-386-2720
In stock
NSN: 5331-01-386-2720
FSC Code: 5331
MPN: 261217498

5331-99-517-4252 (5330-99-302-1454)

NIIN: 99-517-4252
In stock
NSN: 5331-99-517-4252
FSC Code: 5331
MPN: 5330993021454

5331-01-346-1474 (26-116)

NIIN: 01-346-1474
In stock
NSN: 5331-01-346-1474
FSC Code: 5331
MPN: 26116

5331-01-453-5089 (261-0215-009)

NIIN: 01-453-5089
In stock
NSN: 5331-01-453-5089
FSC Code: 5331
MPN: 2610215009

5331-01-453-5087 (261-0215-008)

NIIN: 01-453-5087
In stock
NSN: 5331-01-453-5087
FSC Code: 5331
MPN: 2610215008

5331-01-453-5084 (261-0215-004)

NIIN: 01-453-5084
In stock
NSN: 5331-01-453-5084
FSC Code: 5331
MPN: 2610215004

5331-01-398-5199 (2609782-223)

NIIN: 01-398-5199
In stock
NSN: 5331-01-398-5199
FSC Code: 5331
MPN: 2609782223

5331-01-398-5200 (2609782-011)

NIIN: 01-398-5200
In stock
NSN: 5331-01-398-5200
FSC Code: 5331
MPN: 2609782011

5331-01-398-5204 (2606457-8)

NIIN: 01-398-5204
In stock
NSN: 5331-01-398-5204
FSC Code: 5331
MPN: 26064578

5331-01-418-4587 (26-0601-79-02)

NIIN: 01-418-4587
In stock
NSN: 5331-01-418-4587
FSC Code: 5331
MPN: 2606017902

5331-01-398-5201 (2606136-228)

NIIN: 01-398-5201
In stock
NSN: 5331-01-398-5201
FSC Code: 5331
MPN: 2606136228

5331-01-462-7299 (2606136-227)

NIIN: 01-462-7299
In stock
NSN: 5331-01-462-7299
FSC Code: 5331
MPN: 2606136227

5331-01-438-3693 (2606136-215)

NIIN: 01-438-3693
In stock
NSN: 5331-01-438-3693
FSC Code: 5331
MPN: 2606136215

5331-00-167-5163 (63B0218-450)

NIIN: 00-167-5163
In stock
NSN: 5331-00-167-5163
FSC Code: 5331
MPN: 63B0218450