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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.

5331-01-446-5042 (21-10923)

NIIN: 01-446-5042
In stock
NSN: 5331-01-446-5042
FSC Code: 5331
MPN: 2110923

5331-01-343-4234 (21-10926)

NIIN: 01-343-4234
In stock
NSN: 5331-01-343-4234
FSC Code: 5331
MPN: 2110926

5331-01-128-8826 (58-44-13)

NIIN: 01-128-8826
In stock
NSN: 5331-01-128-8826
FSC Code: 5331
MPN: 584413

5331-25-150-2440 (21-10862)

NIIN: 25-150-2440
In stock
NSN: 5331-25-150-2440
FSC Code: 5331
MPN: 2110862

5331-01-425-1872 (SMS158649.22X5.7)

NIIN: 01-425-1872
In stock
NSN: 5331-01-425-1872
FSC Code: 5331
MPN: SMS15864922X57

5331-01-076-6163 (58-44-14)

NIIN: 01-076-6163
In stock
NSN: 5331-01-076-6163
FSC Code: 5331
MPN: 584414

5331-01-425-1927 (SMS1586109.1X5.7)

NIIN: 01-425-1927
In stock
NSN: 5331-01-425-1927
FSC Code: 5331
MPN: SMS15861091X57

5331-01-424-0081 (21-10607)

NIIN: 01-424-0081
In stock
NSN: 5331-01-424-0081
FSC Code: 5331
MPN: 2110607

5331-01-077-4687 (58-44-09)

NIIN: 01-077-4687
In stock
NSN: 5331-01-077-4687
FSC Code: 5331
MPN: 584409

5331-00-822-0826 (584401-5)

NIIN: 00-822-0826
In stock
NSN: 5331-00-822-0826
FSC Code: 5331
MPN: 5844015

5331-00-824-9295 (584401-2)

NIIN: 00-824-9295
In stock
NSN: 5331-00-824-9295
FSC Code: 5331
MPN: 5844012

5331-01-424-0061 (21-10611)

NIIN: 01-424-0061
In stock
NSN: 5331-01-424-0061
FSC Code: 5331
MPN: 2110611

5331-01-425-1915 (21-10601IT12)

NIIN: 01-425-1915
In stock
NSN: 5331-01-425-1915
FSC Code: 5331
MPN: 2110601IT12

5331-01-425-1924 (SMS1586339.5X5.7)

NIIN: 01-425-1924
In stock
NSN: 5331-01-425-1924
FSC Code: 5331
MPN: SMS15863395X57

5331-00-822-0827 (584401-6)

NIIN: 00-822-0827
In stock
NSN: 5331-00-822-0827
FSC Code: 5331
MPN: 5844016

5331-01-424-0069 (21-10611)

NIIN: 01-424-0069
In stock
NSN: 5331-01-424-0069
FSC Code: 5331
MPN: 2110611

5331-01-425-1904 (21-10607)

NIIN: 01-425-1904
In stock
NSN: 5331-01-425-1904
FSC Code: 5331
MPN: 2110607

5331-01-425-1908 (21-10607)

NIIN: 01-425-1908
In stock
NSN: 5331-01-425-1908
FSC Code: 5331
MPN: 2110607

5331-01-424-1993 (463736/6770020)

NIIN: 01-424-1993
In stock
NSN: 5331-01-424-1993
FSC Code: 5331
MPN: 4637366770020

5331-01-424-2010 (21-10608)

NIIN: 01-424-2010
In stock
NSN: 5331-01-424-2010
FSC Code: 5331
MPN: 2110608

5331-01-425-1911 (21-10601)

NIIN: 01-425-1911
In stock
NSN: 5331-01-425-1911
FSC Code: 5331
MPN: 2110601

5331-01-425-1886 (21-10606)

NIIN: 01-425-1886
In stock
NSN: 5331-01-425-1886
FSC Code: 5331
MPN: 2110606

5331-01-425-1878 (ORMA000579XXXMA)

NIIN: 01-425-1878
In stock
NSN: 5331-01-425-1878
FSC Code: 5331
MPN: ORMA000579XXXMA

5331-01-425-0159 (461351/6370084)

NIIN: 01-425-0159
In stock
NSN: 5331-01-425-0159
FSC Code: 5331
MPN: 4613516370084

5331-01-530-9806 (211041485DD0)

NIIN: 01-530-9806
In stock
NSN: 5331-01-530-9806
FSC Code: 5331
MPN: 211041485DD0

5331-01-528-6356 (CD-023-35-11CP)

NIIN: 01-528-6356
In stock
NSN: 5331-01-528-6356
FSC Code: 5331
MPN: CD0233511CP

5331-01-528-6410 (CD-023-35-10CP)

NIIN: 01-528-6410
In stock
NSN: 5331-01-528-6410
FSC Code: 5331
MPN: CD0233510CP

5331-01-505-0536 (2111007-299-206)

NIIN: 01-505-0536
In stock
NSN: 5331-01-505-0536
FSC Code: 5331
MPN: 2111007299206

5331-01-530-9809 (211004812DD0)

NIIN: 01-530-9809
In stock
NSN: 5331-01-530-9809
FSC Code: 5331
MPN: 211004812DD0

5331-01-375-3085 (2285QQ)

NIIN: 01-375-3085
In stock
NSN: 5331-01-375-3085
FSC Code: 5331
MPN: 2285QQ

5331-01-560-1437 (2-110)

NIIN: 01-560-1437
In stock
NSN: 5331-01-560-1437
FSC Code: 5331
MPN: 2110

5331-12-336-3210 (210000 700429210000)

NIIN: 12-336-3210
In stock
NSN: 5331-12-336-3210
FSC Code: 5331
MPN: 210000700429210000

5331-01-341-3672 (SAE-AS83461/1)

NIIN: 01-341-3672
In stock
NSN: 5331-01-341-3672
FSC Code: 5331
MPN: SAEAS834611

5331-99-610-6582 (AS43013-109)

NIIN: 99-610-6582
In stock
NSN: 5331-99-610-6582
FSC Code: 5331
MPN: AS43013109

5331-01-465-6250 (9325C03-3074-109)

NIIN: 01-465-6250
In stock
NSN: 5331-01-465-6250
FSC Code: 5331
MPN: 9325C033074109

5331-01-361-0714 (2-108N756-75)

NIIN: 01-361-0714
In stock
NSN: 5331-01-361-0714
FSC Code: 5331
MPN: 2108N75675

5331-01-494-4559 (MIL-DTL-25988/4)

NIIN: 01-494-4559
In stock
NSN: 5331-01-494-4559
FSC Code: 5331
MPN: MILDTL259884

5331-01-498-2275 (2-106N0552-90)

NIIN: 01-498-2275
In stock
NSN: 5331-01-498-2275
FSC Code: 5331
MPN: 2106N055290

5331-01-494-9943 (L1218-802-106)

NIIN: 01-494-9943
In stock
NSN: 5331-01-494-9943
FSC Code: 5331
MPN: L1218802106

5331-01-494-9077 (MIL-DTL-25988/3)

NIIN: 01-494-9077
In stock
NSN: 5331-01-494-9077
FSC Code: 5331
MPN: MILDTL259883

5331-01-467-5979 (5-15-18102-1)

NIIN: 01-467-5979
In stock
NSN: 5331-01-467-5979
FSC Code: 5331
MPN: 515181021

5331-01-360-8012 (2-105N756-75)

NIIN: 01-360-8012
In stock
NSN: 5331-01-360-8012
FSC Code: 5331
MPN: 2105N75675

5331-01-382-0109 (2-105E540-80)

NIIN: 01-382-0109
In stock
NSN: 5331-01-382-0109
FSC Code: 5331
MPN: 2105E54080

5331-01-561-7881 (2105-023-00)

NIIN: 01-561-7881
In stock
NSN: 5331-01-561-7881
FSC Code: 5331
MPN: 210502300

5331-01-508-3065 (21051021-101)

NIIN: 01-508-3065
In stock
NSN: 5331-01-508-3065
FSC Code: 5331
MPN: 21051021101

5331-01-561-7891 (2105-037-00)

NIIN: 01-561-7891
In stock
NSN: 5331-01-561-7891
FSC Code: 5331
MPN: 210503700

5331-01-369-3572 (2-104N507-90)

NIIN: 01-369-3572
In stock
NSN: 5331-01-369-3572
FSC Code: 5331
MPN: 2104N50790

5331-01-500-2624 (21049873-104)

NIIN: 01-500-2624
In stock
NSN: 5331-01-500-2624
FSC Code: 5331
MPN: 21049873104