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.

5331-00-165-1979 (3-928)

NIIN: 00-165-1979
In stock
NSN: 5331-00-165-1979
FSC Code: 5331
MPN: 3928

5331-01-490-9807 (12-6227N009)

NIIN: 01-490-9807
In stock
NSN: 5331-01-490-9807
FSC Code: 5331
MPN: 126227N009

5331-01-490-9811 (12-6227N013)

NIIN: 01-490-9811
In stock
NSN: 5331-01-490-9811
FSC Code: 5331
MPN: 126227N013

5331-01-491-6182 (12-6227N021)

NIIN: 01-491-6182
In stock
NSN: 5331-01-491-6182
FSC Code: 5331
MPN: 126227N021

5331-00-752-8338 (3-924E688-70)

NIIN: 00-752-8338
In stock
NSN: 5331-00-752-8338
FSC Code: 5331
MPN: 3924E68870

5331-01-310-3894 (3925027-9)

NIIN: 01-310-3894
In stock
NSN: 5331-01-310-3894
FSC Code: 5331
MPN: 39250279

5331-01-293-1770 (3-924-S604-70)

NIIN: 01-293-1770
In stock
NSN: 5331-01-293-1770
FSC Code: 5331
MPN: 3924S60470

5331-01-230-4602 (3-924E688-70)

NIIN: 01-230-4602
In stock
NSN: 5331-01-230-4602
FSC Code: 5331
MPN: 3924E68870

5331-01-266-2498 (3-924V-9)

NIIN: 01-266-2498
In stock
NSN: 5331-01-266-2498
FSC Code: 5331
MPN: 3924V9

5331-00-456-2532 (3-924E540-80)

NIIN: 00-456-2532
In stock
NSN: 5331-00-456-2532
FSC Code: 5331
MPN: 3924E54080

5331-01-058-5402 (3-924N168-80)

NIIN: 01-058-5402
In stock
NSN: 5331-01-058-5402
FSC Code: 5331
MPN: 3924N16880

5331-01-038-3990 (3-924E0540-80)

NIIN: 01-038-3990
In stock
NSN: 5331-01-038-3990
FSC Code: 5331
MPN: 3924E054080

5331-01-317-8106 (392385R1)

NIIN: 01-317-8106
In stock
NSN: 5331-01-317-8106
FSC Code: 5331
MPN: 392385R1

5331-01-490-0210 (1-261-23711)

NIIN: 01-490-0210
In stock
NSN: 5331-01-490-0210
FSC Code: 5331
MPN: 126123711

5331-99-808-4401 (BS1806-010)

NIIN: 99-808-4401
In stock
NSN: 5331-99-808-4401
FSC Code: 5331
MPN: BS1806010

5331-01-324-4829 (3921-280)

NIIN: 01-324-4829
In stock
NSN: 5331-01-324-4829
FSC Code: 5331
MPN: 3921280

5331-01-285-5906 (3920E810-80)

NIIN: 01-285-5906
In stock
NSN: 5331-01-285-5906
FSC Code: 5331
MPN: 3920E81080

5331-00-226-2995 (3-920N552-90)

NIIN: 00-226-2995
In stock
NSN: 5331-00-226-2995
FSC Code: 5331
MPN: 3920N55290

5331-01-504-9370 (12601622-001)

NIIN: 01-504-9370
In stock
NSN: 5331-01-504-9370
FSC Code: 5331
MPN: 12601622001

5331-01-433-8446 (150-1013-4)

NIIN: 01-433-8446
In stock
NSN: 5331-01-433-8446
FSC Code: 5331
MPN: 15010134

5331-01-530-4135 (12601622-002)

NIIN: 01-530-4135
In stock
NSN: 5331-01-530-4135
FSC Code: 5331
MPN: 12601622002

5331-01-547-0474 (9557K76)

NIIN: 01-547-0474
In stock
NSN: 5331-01-547-0474
FSC Code: 5331
MPN: 9557K76

5331-01-466-3544 (12-5X2-61D6)

NIIN: 01-466-3544
In stock
NSN: 5331-01-466-3544
FSC Code: 5331
MPN: 125X261D6

5331-00-165-1977 (3-920)

NIIN: 00-165-1977
In stock
NSN: 5331-00-165-1977
FSC Code: 5331
MPN: 3920

5331-00-447-3882 (3-920)

NIIN: 00-447-3882
In stock
NSN: 5331-00-447-3882
FSC Code: 5331
MPN: 3920

5331-00-165-1976 (3-918V747-75)

NIIN: 00-165-1976
In stock
NSN: 5331-00-165-1976
FSC Code: 5331
MPN: 3918V74775

5331-01-094-9301 (3-918N507-90)

NIIN: 01-094-9301
In stock
NSN: 5331-01-094-9301
FSC Code: 5331
MPN: 3918N50790

5331-00-031-1094 (3-918)

NIIN: 00-031-1094
In stock
NSN: 5331-00-031-1094
FSC Code: 5331
MPN: 3918

5331-01-125-6268 (3-916N-9)

NIIN: 01-125-6268
In stock
NSN: 5331-01-125-6268
FSC Code: 5331
MPN: 3916N9

5331-01-104-7352 (3-916N525-60)

NIIN: 01-104-7352
In stock
NSN: 5331-01-104-7352
FSC Code: 5331
MPN: 3916N52560

5331-00-454-0438 (3916N-9)

NIIN: 00-454-0438
In stock
NSN: 5331-00-454-0438
FSC Code: 5331
MPN: 3916N9

5331-01-283-6674 (3-916V-9)

NIIN: 01-283-6674
In stock
NSN: 5331-01-283-6674
FSC Code: 5331
MPN: 3916V9

5331-01-041-9661 (3-916L1223-60)

NIIN: 01-041-9661
In stock
NSN: 5331-01-041-9661
FSC Code: 5331
MPN: 3916L122360

5331-00-492-2147 (3-916E529-6)

NIIN: 00-492-2147
In stock
NSN: 5331-00-492-2147
FSC Code: 5331
MPN: 3916E5296

5331-01-086-4935 (3-916-47-071)

NIIN: 01-086-4935
In stock
NSN: 5331-01-086-4935
FSC Code: 5331
MPN: 391647071

5331-01-515-7278 (125-9794)

NIIN: 01-515-7278
In stock
NSN: 5331-01-515-7278
FSC Code: 5331
MPN: 1259794

5331-01-209-3794 (3-916)

NIIN: 01-209-3794
In stock
NSN: 5331-01-209-3794
FSC Code: 5331
MPN: 3916

5331-00-465-2911 (3-914L608-6)

NIIN: 00-465-2911
In stock
NSN: 5331-00-465-2911
FSC Code: 5331
MPN: 3914L6086

5331-01-360-6012 (125-8274)

NIIN: 01-360-6012
In stock
NSN: 5331-01-360-6012
FSC Code: 5331
MPN: 1258274

5331-01-208-5283 (3-914E515-8)

NIIN: 01-208-5283
In stock
NSN: 5331-01-208-5283
FSC Code: 5331
MPN: 3914E5158

5331-01-550-9030 (125-775)

NIIN: 01-550-9030
In stock
NSN: 5331-01-550-9030
FSC Code: 5331
MPN: 125775

5331-01-288-2117 (3-913N674-70)

NIIN: 01-288-2117
In stock
NSN: 5331-01-288-2117
FSC Code: 5331
MPN: 3913N67470

5331-01-292-3305 (3-913-S604-70)

NIIN: 01-292-3305
In stock
NSN: 5331-01-292-3305
FSC Code: 5331
MPN: 3913S60470

5331-01-326-5556 (39132-27)

NIIN: 01-326-5556
In stock
NSN: 5331-01-326-5556
FSC Code: 5331
MPN: 3913227

5331-00-159-2861 (39132-60)

NIIN: 00-159-2861
In stock
NSN: 5331-00-159-2861
FSC Code: 5331
MPN: 3913260

5331-00-102-4663 (39131-23)

NIIN: 00-102-4663
In stock
NSN: 5331-00-102-4663
FSC Code: 5331
MPN: 3913123

5331-00-159-2870 (39131-38)

NIIN: 00-159-2870
In stock
NSN: 5331-00-159-2870
FSC Code: 5331
MPN: 3913138

5331-01-185-8549 (391-30630)

NIIN: 01-185-8549
In stock
NSN: 5331-01-185-8549
FSC Code: 5331
MPN: 39130630