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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.

5331-01-386-5420 (NAS1601-222)

NIIN: 01-386-5420
In stock
NSN: 5331-01-386-5420
FSC Code: 5331
MPN: NAS1601222

5331-01-344-2063 (NAS1602-920)

NIIN: 01-344-2063
In stock
NSN: 5331-01-344-2063
FSC Code: 5331
MPN: NAS1602920

5331-01-488-6527 (NAS1601-231)

NIIN: 01-488-6527
In stock
NSN: 5331-01-488-6527
FSC Code: 5331
MPN: NAS1601231

5331-01-396-2218 (NAS1611-264A)

NIIN: 01-396-2218
In stock
NSN: 5331-01-396-2218
FSC Code: 5331
MPN: NAS1611264A

5331-01-386-0593 (NAS1601-274)

NIIN: 01-386-0593
In stock
NSN: 5331-01-386-0593
FSC Code: 5331
MPN: NAS1601274

5331-01-494-3728 (NAS1611-029A)

NIIN: 01-494-3728
In stock
NSN: 5331-01-494-3728
FSC Code: 5331
MPN: NAS1611029A

5331-01-356-9429 (NAS1601-329)

NIIN: 01-356-9429
In stock
NSN: 5331-01-356-9429
FSC Code: 5331
MPN: NAS1601329

5331-01-389-1380 (NAS1601-208)

NIIN: 01-389-1380
In stock
NSN: 5331-01-389-1380
FSC Code: 5331
MPN: NAS1601208

5331-01-365-3101 (NAS1611-251A)

NIIN: 01-365-3101
In stock
NSN: 5331-01-365-3101
FSC Code: 5331
MPN: NAS1611251A

5331-01-382-0124 (NAS1611-225A)

NIIN: 01-382-0124
In stock
NSN: 5331-01-382-0124
FSC Code: 5331
MPN: NAS1611225A

5331-01-396-2571 (NAS1601-240)

NIIN: 01-396-2571
In stock
NSN: 5331-01-396-2571
FSC Code: 5331
MPN: NAS1601240

5331-01-417-1577 (NAS1601-233)

NIIN: 01-417-1577
In stock
NSN: 5331-01-417-1577
FSC Code: 5331
MPN: NAS1601233

5331-01-413-5192 (NAS1601-280)

NIIN: 01-413-5192
In stock
NSN: 5331-01-413-5192
FSC Code: 5331
MPN: NAS1601280

5331-01-473-6881 (NAS1601-265)

NIIN: 01-473-6881
In stock
NSN: 5331-01-473-6881
FSC Code: 5331
MPN: NAS1601265

5331-01-506-0205 (NAS1602-905)

NIIN: 01-506-0205
In stock
NSN: 5331-01-506-0205
FSC Code: 5331
MPN: NAS1602905

5331-01-393-8574 (NAS1601-252)

NIIN: 01-393-8574
In stock
NSN: 5331-01-393-8574
FSC Code: 5331
MPN: NAS1601252

5331-01-458-6583 (NAS1611-167A)

NIIN: 01-458-6583
In stock
NSN: 5331-01-458-6583
FSC Code: 5331
MPN: NAS1611167A

5331-01-393-8572 (NAS1601-234)

NIIN: 01-393-8572
In stock
NSN: 5331-01-393-8572
FSC Code: 5331
MPN: NAS1601234

5331-01-413-5191 (NAS1611-170A)

NIIN: 01-413-5191
In stock
NSN: 5331-01-413-5191
FSC Code: 5331
MPN: NAS1611170A

5331-01-406-5564 (NAS1611-169A)

NIIN: 01-406-5564
In stock
NSN: 5331-01-406-5564
FSC Code: 5331
MPN: NAS1611169A

5331-01-363-6980 (NAS1601-232)

NIIN: 01-363-6980
In stock
NSN: 5331-01-363-6980
FSC Code: 5331
MPN: NAS1601232

5331-01-343-2617 (NAS1601-226)

NIIN: 01-343-2617
In stock
NSN: 5331-01-343-2617
FSC Code: 5331
MPN: NAS1601226

5331-01-359-1498 (NAS1611-174A)

NIIN: 01-359-1498
In stock
NSN: 5331-01-359-1498
FSC Code: 5331
MPN: NAS1611174A

5331-01-458-6579 (NAS1611-172A)

NIIN: 01-458-6579
In stock
NSN: 5331-01-458-6579
FSC Code: 5331
MPN: NAS1611172A

5331-01-364-3808 (NAS1611-163A)

NIIN: 01-364-3808
In stock
NSN: 5331-01-364-3808
FSC Code: 5331
MPN: NAS1611163A

5331-01-370-0594 (NAS1601-227)

NIIN: 01-370-0594
In stock
NSN: 5331-01-370-0594
FSC Code: 5331
MPN: NAS1601227

5331-01-365-1069 (NAS1601-146)

NIIN: 01-365-1069
In stock
NSN: 5331-01-365-1069
FSC Code: 5331
MPN: NAS1601146

5331-01-475-3143 (NAS1601-164)

NIIN: 01-475-3143
In stock
NSN: 5331-01-475-3143
FSC Code: 5331
MPN: NAS1601164

5331-01-460-8982 (NAS1601-155)

NIIN: 01-460-8982
In stock
NSN: 5331-01-460-8982
FSC Code: 5331
MPN: NAS1601155

5331-01-400-0515 (NAS1601-147)

NIIN: 01-400-0515
In stock
NSN: 5331-01-400-0515
FSC Code: 5331
MPN: NAS1601147

5331-01-396-2219 (NAS1601-161)

NIIN: 01-396-2219
In stock
NSN: 5331-01-396-2219
FSC Code: 5331
MPN: NAS1601161

5331-01-389-3376 (NAS1611-148A)

NIIN: 01-389-3376
In stock
NSN: 5331-01-389-3376
FSC Code: 5331
MPN: NAS1611148A

5331-01-357-7175 (NAS1611-129A)

NIIN: 01-357-7175
In stock
NSN: 5331-01-357-7175
FSC Code: 5331
MPN: NAS1611129A

5331-01-487-2617 (NAS1601-132)

NIIN: 01-487-2617
In stock
NSN: 5331-01-487-2617
FSC Code: 5331
MPN: NAS1601132

5331-01-365-1063 (NAS1601-134)

NIIN: 01-365-1063
In stock
NSN: 5331-01-365-1063
FSC Code: 5331
MPN: NAS1601134

5331-01-393-0888 (NAS1601-143)

NIIN: 01-393-0888
In stock
NSN: 5331-01-393-0888
FSC Code: 5331
MPN: NAS1601143

5331-01-347-9721 (NAS1601-126)

NIIN: 01-347-9721
In stock
NSN: 5331-01-347-9721
FSC Code: 5331
MPN: NAS1601126

5331-01-393-8575 (NAS1601-145)

NIIN: 01-393-8575
In stock
NSN: 5331-01-393-8575
FSC Code: 5331
MPN: NAS1601145

5331-01-399-3910 (NAS1601-023)

NIIN: 01-399-3910
In stock
NSN: 5331-01-399-3910
FSC Code: 5331
MPN: NAS1601023

5331-01-355-2541 (NAS1601-040)

NIIN: 01-355-2541
In stock
NSN: 5331-01-355-2541
FSC Code: 5331
MPN: NAS1601040

5331-01-385-3729 (NAS1601-117)

NIIN: 01-385-3729
In stock
NSN: 5331-01-385-3729
FSC Code: 5331
MPN: NAS1601117

5331-01-429-2507 (NAS1601-131)

NIIN: 01-429-2507
In stock
NSN: 5331-01-429-2507
FSC Code: 5331
MPN: NAS1601131

5331-01-521-4233 (NAS1611-136A)

NIIN: 01-521-4233
In stock
NSN: 5331-01-521-4233
FSC Code: 5331
MPN: NAS1611136A

5331-01-364-7100 (NAS1601-012)

NIIN: 01-364-7100
In stock
NSN: 5331-01-364-7100
FSC Code: 5331
MPN: NAS1601012

5331-01-412-5381 (NAS1601-032)

NIIN: 01-412-5381
In stock
NSN: 5331-01-412-5381
FSC Code: 5331
MPN: NAS1601032

5331-01-358-9609 (NAS1601-029)

NIIN: 01-358-9609
In stock
NSN: 5331-01-358-9609
FSC Code: 5331
MPN: NAS1601029

5331-01-365-1064 (NAS1601-130)

NIIN: 01-365-1064
In stock
NSN: 5331-01-365-1064
FSC Code: 5331
MPN: NAS1601130

5331-01-353-5946 (NAS1601-122)

NIIN: 01-353-5946
In stock
NSN: 5331-01-353-5946
FSC Code: 5331
MPN: NAS1601122