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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.

5331-01-135-7289 (AS568-461)

NIIN: 01-135-7289
In stock
NSN: 5331-01-135-7289
FSC Code: 5331
MPN: AS568461

5331-01-085-7776 (AS568-454M1L-R-)

NIIN: 01-085-7776
In stock
NSN: 5331-01-085-7776
FSC Code: 5331
MPN: AS568454M1LR

5331-01-080-2999 (AS568-427MILG23652TYPE2)

NIIN: 01-080-2999
In stock
NSN: 5331-01-080-2999
FSC Code: 5331
MPN: AS568427MILG23652TYPE2

5331-01-011-9709 (AS568-444)

NIIN: 01-011-9709
In stock
NSN: 5331-01-011-9709
FSC Code: 5331
MPN: AS568444

5331-01-277-8798 (AS568-40)

NIIN: 01-277-8798
In stock
NSN: 5331-01-277-8798
FSC Code: 5331
MPN: AS56840

5331-00-425-2779 (AS568-381MILP25732)

NIIN: 00-425-2779
In stock
NSN: 5331-00-425-2779
FSC Code: 5331
MPN: AS568381MILP25732

5331-00-625-8523 (AS568-354MILP5516CLB)

NIIN: 00-625-8523
In stock
NSN: 5331-00-625-8523
FSC Code: 5331
MPN: AS568354MILP5516CLB

5331-01-006-5476 (AS568-376MILP25732)

NIIN: 01-006-5476
In stock
NSN: 5331-01-006-5476
FSC Code: 5331
MPN: AS568376MILP25732

5331-00-463-0308 (AS568-340MIL-G-22050)

NIIN: 00-463-0308
In stock
NSN: 5331-00-463-0308
FSC Code: 5331
MPN: AS568340MILG22050

5331-01-022-8135 (AS568-342)

NIIN: 01-022-8135
In stock
NSN: 5331-01-022-8135
FSC Code: 5331
MPN: AS568342

5331-00-373-0091 (AS568-345MILG22)

NIIN: 00-373-0091
In stock
NSN: 5331-00-373-0091
FSC Code: 5331
MPN: AS568345MILG22

5331-00-612-3644 (AS568-346)

NIIN: 00-612-3644
In stock
NSN: 5331-00-612-3644
FSC Code: 5331
MPN: AS568346

5331-01-331-9973 (AS568-329-ASTMD2000)

NIIN: 01-331-9973
In stock
NSN: 5331-01-331-9973
FSC Code: 5331
MPN: AS568329ASTMD2000

5331-01-073-7041 (AS568-336ZZR765CL2BGR70)

NIIN: 01-073-7041
In stock
NSN: 5331-01-073-7041
FSC Code: 5331
MPN: AS568336ZZR765CL2BGR70

5331-00-612-3643 (AS568-337MIL-G-)

NIIN: 00-612-3643
In stock
NSN: 5331-00-612-3643
FSC Code: 5331
MPN: AS568337MILG

5331-01-004-6972 (AS568-337MILG23652TY1)

NIIN: 01-004-6972
In stock
NSN: 5331-01-004-6972
FSC Code: 5331
MPN: AS568337MILG23652TY1

5331-00-413-6036 (AS568-329MILG23652TY2)

NIIN: 00-413-6036
In stock
NSN: 5331-00-413-6036
FSC Code: 5331
MPN: AS568329MILG23652TY2

5331-01-021-4600 (AS568-334)

NIIN: 01-021-4600
In stock
NSN: 5331-01-021-4600
FSC Code: 5331
MPN: AS568334

5331-01-273-6803 (AS568-30)

NIIN: 01-273-6803
In stock
NSN: 5331-01-273-6803
FSC Code: 5331
MPN: AS56830

5331-01-108-3783 (AS568-263)

NIIN: 01-108-3783
In stock
NSN: 5331-01-108-3783
FSC Code: 5331
MPN: AS568263

5331-01-020-5271 (AS568-320-MILP5516CLB)

NIIN: 01-020-5271
In stock
NSN: 5331-01-020-5271
FSC Code: 5331
MPN: AS568320MILP5516CLB

5331-00-392-0852 (AS568-274MILG22050GR2)

NIIN: 00-392-0852
In stock
NSN: 5331-00-392-0852
FSC Code: 5331
MPN: AS568274MILG22050GR2

5331-01-136-5767 (AS568-255MILG23)

NIIN: 01-136-5767
In stock
NSN: 5331-01-136-5767
FSC Code: 5331
MPN: AS568255MILG23

5331-00-893-5685 (AS568-257MIL-R-7362)

NIIN: 00-893-5685
In stock
NSN: 5331-00-893-5685
FSC Code: 5331
MPN: AS568257MILR7362

5331-01-126-1241 (AS568-249MIL-G-)

NIIN: 01-126-1241
In stock
NSN: 5331-01-126-1241
FSC Code: 5331
MPN: AS568249MILG

5331-01-108-3782 (AS568-228MIL-G-)

NIIN: 01-108-3782
In stock
NSN: 5331-01-108-3782
FSC Code: 5331
MPN: AS568228MILG

5331-01-141-1860 (AS568-270AMS3651)

NIIN: 01-141-1860
In stock
NSN: 5331-01-141-1860
FSC Code: 5331
MPN: AS568270AMS3651

5331-00-373-0090 (AS568-234MILG22)

NIIN: 00-373-0090
In stock
NSN: 5331-00-373-0090
FSC Code: 5331
MPN: AS568234MILG22

5331-01-004-6987 (AS568-234MILG23652TY1)

NIIN: 01-004-6987
In stock
NSN: 5331-01-004-6987
FSC Code: 5331
MPN: AS568234MILG23652TY1

5331-00-514-6132 (AS568-246-S32)

NIIN: 00-514-6132
In stock
NSN: 5331-00-514-6132
FSC Code: 5331
MPN: AS568246S32

5331-01-130-9074 (AS568-237)

NIIN: 01-130-9074
In stock
NSN: 5331-01-130-9074
FSC Code: 5331
MPN: AS568237

5331-01-131-6796 (AS-568-243-60V)

NIIN: 01-131-6796
In stock
NSN: 5331-01-131-6796
FSC Code: 5331
MPN: AS56824360V

5331-00-274-7482 (AS568-224ZZR765CL2BGR70)

NIIN: 00-274-7482
In stock
NSN: 5331-00-274-7482
FSC Code: 5331
MPN: AS568224ZZR765CL2BGR70

5331-00-414-1734 (AS568-246MILG22050GR2)

NIIN: 00-414-1734
In stock
NSN: 5331-00-414-1734
FSC Code: 5331
MPN: AS568246MILG22050GR2

5331-00-395-4256 (AS568-242M1LG22050CGR2)

NIIN: 00-395-4256
In stock
NSN: 5331-00-395-4256
FSC Code: 5331
MPN: AS568242M1LG22050CGR2

5331-01-143-6593 (AS568-223MIL-G-)

NIIN: 01-143-6593
In stock
NSN: 5331-01-143-6593
FSC Code: 5331
MPN: AS568223MILG

5331-00-274-7481 (AS568-223ZZR765CL2BGR70)

NIIN: 00-274-7481
In stock
NSN: 5331-00-274-7481
FSC Code: 5331
MPN: AS568223ZZR765CL2BGR70

5331-01-088-0313 (AS568-224MIL-G-1149TY2CL5)

NIIN: 01-088-0313
In stock
NSN: 5331-01-088-0313
FSC Code: 5331
MPN: AS568224MILG1149TY2CL5

5331-01-222-9114 (AS568-223)

NIIN: 01-222-9114
In stock
NSN: 5331-01-222-9114
FSC Code: 5331
MPN: AS568223

5331-01-105-7254 (AS568-214IDSA6865-68)

NIIN: 01-105-7254
In stock
NSN: 5331-01-105-7254
FSC Code: 5331
MPN: AS568214IDSA686568

5331-00-140-7665 (AS568-220)

NIIN: 00-140-7665
In stock
NSN: 5331-00-140-7665
FSC Code: 5331
MPN: AS568220

5331-00-326-4884 (AS568-166MILP5516CLB)

NIIN: 00-326-4884
In stock
NSN: 5331-00-326-4884
FSC Code: 5331
MPN: AS568166MILP5516CLB

5331-01-124-5800 (AS568-206MIL-G-1149TY2CL5)

NIIN: 01-124-5800
In stock
NSN: 5331-01-124-5800
FSC Code: 5331
MPN: AS568206MILG1149TY2CL5

5331-00-878-0507 (AS568-220MILP25732)

NIIN: 00-878-0507
In stock
NSN: 5331-00-878-0507
FSC Code: 5331
MPN: AS568220MILP25732

5331-00-508-6181 (AS568-147MILP5516CLB)

NIIN: 00-508-6181
In stock
NSN: 5331-00-508-6181
FSC Code: 5331
MPN: AS568147MILP5516CLB

5331-01-128-5188 (AS568-152)

NIIN: 01-128-5188
In stock
NSN: 5331-01-128-5188
FSC Code: 5331
MPN: AS568152

5331-01-044-6596 (AS568-141)

NIIN: 01-044-6596
In stock
NSN: 5331-01-044-6596
FSC Code: 5331
MPN: AS568141

5331-01-004-6982 (AS568-144MILG23652TY1)

NIIN: 01-004-6982
In stock
NSN: 5331-01-004-6982
FSC Code: 5331
MPN: AS568144MILG23652TY1