Skip to content

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.

5331-01-122-5495 (64357-07020-104)

NIIN: 01-122-5495
In stock
NSN: 5331-01-122-5495
FSC Code: 5331
MPN: 6435707020104

5331-01-122-5493 (64357-07020-102)

NIIN: 01-122-5493
In stock
NSN: 5331-01-122-5493
FSC Code: 5331
MPN: 6435707020102

5331-01-122-5822 (64357-07020-103)

NIIN: 01-122-5822
In stock
NSN: 5331-01-122-5822
FSC Code: 5331
MPN: 6435707020103

5331-00-850-4783 (6435-66423-101)

NIIN: 00-850-4783
In stock
NSN: 5331-00-850-4783
FSC Code: 5331
MPN: 643566423101

5331-00-850-4784 (6435-66423-102)

NIIN: 00-850-4784
In stock
NSN: 5331-00-850-4784
FSC Code: 5331
MPN: 643566423102

5331-00-494-9667 (6435-20508-101)

NIIN: 00-494-9667
In stock
NSN: 5331-00-494-9667
FSC Code: 5331
MPN: 643520508101

5331-00-850-4781 (6435-20041-103)

NIIN: 00-850-4781
In stock
NSN: 5331-00-850-4781
FSC Code: 5331
MPN: 643520041103

5331-00-850-4782 (6435-20041-104)

NIIN: 00-850-4782
In stock
NSN: 5331-00-850-4782
FSC Code: 5331
MPN: 643520041104

5331-00-911-9457 (6435-20041-100)

NIIN: 00-911-9457
In stock
NSN: 5331-00-911-9457
FSC Code: 5331
MPN: 643520041100

5331-00-998-0634 (6435-20041-101)

NIIN: 00-998-0634
In stock
NSN: 5331-00-998-0634
FSC Code: 5331
MPN: 643520041101

5331-00-997-9030 (6435-20041-107)

NIIN: 00-997-9030
In stock
NSN: 5331-00-997-9030
FSC Code: 5331
MPN: 643520041107

5331-01-123-7120 (64351-11008-115)

NIIN: 01-123-7120
In stock
NSN: 5331-01-123-7120
FSC Code: 5331
MPN: 6435111008115

5331-01-123-7128 (64351-11008-114)

NIIN: 01-123-7128
In stock
NSN: 5331-01-123-7128
FSC Code: 5331
MPN: 6435111008114

5331-01-123-7127 (64351-11008-113)

NIIN: 01-123-7127
In stock
NSN: 5331-01-123-7127
FSC Code: 5331
MPN: 6435111008113

5331-01-124-0532 (64351-11008-109)

NIIN: 01-124-0532
In stock
NSN: 5331-01-124-0532
FSC Code: 5331
MPN: 6435111008109

5331-01-124-0533 (64351-11008-110)

NIIN: 01-124-0533
In stock
NSN: 5331-01-124-0533
FSC Code: 5331
MPN: 6435111008110

5331-01-123-7126 (64351-11008-112)

NIIN: 01-123-7126
In stock
NSN: 5331-01-123-7126
FSC Code: 5331
MPN: 6435111008112

5331-01-124-0531 (64351-11008-106)

NIIN: 01-124-0531
In stock
NSN: 5331-01-124-0531
FSC Code: 5331
MPN: 6435111008106

5331-01-123-7125 (64351-11008-111)

NIIN: 01-123-7125
In stock
NSN: 5331-01-123-7125
FSC Code: 5331
MPN: 6435111008111

5331-01-123-7123 (64351-11008-105)

NIIN: 01-123-7123
In stock
NSN: 5331-01-123-7123
FSC Code: 5331
MPN: 6435111008105

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