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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.

5331-01-123-7124 (64351-11008-108)

NIIN: 01-123-7124
In stock
NSN: 5331-01-123-7124
FSC Code: 5331
MPN: 6435111008108

5331-01-123-7122 (64351-11008-104)

NIIN: 01-123-7122
In stock
NSN: 5331-01-123-7122
FSC Code: 5331
MPN: 6435111008104

5331-01-123-7121 (64351-11008-101)

NIIN: 01-123-7121
In stock
NSN: 5331-01-123-7121
FSC Code: 5331
MPN: 6435111008101

5331-01-227-3321 (643-4587-001)

NIIN: 01-227-3321
In stock
NSN: 5331-01-227-3321
FSC Code: 5331
MPN: 6434587001

5331-01-271-4301 (64331-603)

NIIN: 01-271-4301
In stock
NSN: 5331-01-271-4301
FSC Code: 5331
MPN: 64331603

5331-01-095-8414 (6-430-070)

NIIN: 01-095-8414
In stock
NSN: 5331-01-095-8414
FSC Code: 5331
MPN: 6430070

5331-01-075-5395 (642AS7002)

NIIN: 01-075-5395
In stock
NSN: 5331-01-075-5395
FSC Code: 5331
MPN: 642AS7002

5331-01-075-5394 (642AS7005)

NIIN: 01-075-5394
In stock
NSN: 5331-01-075-5394
FSC Code: 5331
MPN: 642AS7005

5331-01-548-4364 (G547-0002-263370201-BCP)

NIIN: 01-548-4364
In stock
NSN: 5331-01-548-4364
FSC Code: 5331
MPN: G5470002263370201BCP

5331-01-398-7469 (5331PL0166457)

NIIN: 01-398-7469
In stock
NSN: 5331-01-398-7469
FSC Code: 5331
MPN: 5331PL0166457

5331-01-475-7813 (AMS-R-83285GR80/AS568-225)

NIIN: 01-475-7813
In stock
NSN: 5331-01-475-7813
FSC Code: 5331
MPN: AMSR83285GR80AS568225

5331-00-247-4231 (6427PC)

NIIN: 00-247-4231
In stock
NSN: 5331-00-247-4231
FSC Code: 5331
MPN: 6427PC

5331-01-203-0738 (6422-100)

NIIN: 01-203-0738
In stock
NSN: 5331-01-203-0738
FSC Code: 5331
MPN: 6422100

5331-00-250-9636 (6420PC)

NIIN: 00-250-9636
In stock
NSN: 5331-00-250-9636
FSC Code: 5331
MPN: 6420PC

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