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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.

5331-00-983-7395 (STD3019E67)

NIIN: 00-983-7395
In stock
NSN: 5331-00-983-7395
FSC Code: 5331
MPN: STD3019E67

5331-00-958-2430 (STD3019E54)

NIIN: 00-958-2430
In stock
NSN: 5331-00-958-2430
FSC Code: 5331
MPN: STD3019E54

5331-01-133-1116 (STD3019E53)

NIIN: 01-133-1116
In stock
NSN: 5331-01-133-1116
FSC Code: 5331
MPN: STD3019E53

5331-00-017-6100 (STD3019E35)

NIIN: 00-017-6100
In stock
NSN: 5331-00-017-6100
FSC Code: 5331
MPN: STD3019E35

5331-00-950-2938 (STD3019E121)

NIIN: 00-950-2938
In stock
NSN: 5331-00-950-2938
FSC Code: 5331
MPN: STD3019E121

5331-00-984-7141 (STD3019E154)

NIIN: 00-984-7141
In stock
NSN: 5331-00-984-7141
FSC Code: 5331
MPN: STD3019E154

5331-01-468-6750 (D-NSL-0-99-002)

NIIN: 01-468-6750
In stock
NSN: 5331-01-468-6750
FSC Code: 5331
MPN: DNSL099002

5331-00-058-5065 (STD3019D79)

NIIN: 00-058-5065
In stock
NSN: 5331-00-058-5065
FSC Code: 5331
MPN: STD3019D79

5331-00-058-5079 (STD3019D34)

NIIN: 00-058-5079
In stock
NSN: 5331-00-058-5079
FSC Code: 5331
MPN: STD3019D34

5331-00-058-5075 (STD3019D20)

NIIN: 00-058-5075
In stock
NSN: 5331-00-058-5075
FSC Code: 5331
MPN: STD3019D20

5331-00-058-5078 (STD3019D175)

NIIN: 00-058-5078
In stock
NSN: 5331-00-058-5078
FSC Code: 5331
MPN: STD3019D175

5331-00-993-8020 (STD3019D17)

NIIN: 00-993-8020
In stock
NSN: 5331-00-993-8020
FSC Code: 5331
MPN: STD3019D17

5331-00-983-8068 (STD3019C87)

NIIN: 00-983-8068
In stock
NSN: 5331-00-983-8068
FSC Code: 5331
MPN: STD3019C87

5331-00-728-6052 (STD3019C167)

NIIN: 00-728-6052
In stock
NSN: 5331-00-728-6052
FSC Code: 5331
MPN: STD3019C167

5331-00-844-2448 (STD3019C69)

NIIN: 00-844-2448
In stock
NSN: 5331-00-844-2448
FSC Code: 5331
MPN: STD3019C69

5331-00-983-8067 (STD3019C75)

NIIN: 00-983-8067
In stock
NSN: 5331-00-983-8067
FSC Code: 5331
MPN: STD3019C75

5331-01-020-9697 (STD3019C30)

NIIN: 01-020-9697
In stock
NSN: 5331-01-020-9697
FSC Code: 5331
MPN: STD3019C30

5331-00-878-6201 (STD3019B72)

NIIN: 00-878-6201
In stock
NSN: 5331-00-878-6201
FSC Code: 5331
MPN: STD3019B72

5331-00-950-4347 (STD3019B124)

NIIN: 00-950-4347
In stock
NSN: 5331-00-950-4347
FSC Code: 5331
MPN: STD3019B124

5331-00-404-6254 (STD3019C44)

NIIN: 00-404-6254
In stock
NSN: 5331-00-404-6254
FSC Code: 5331
MPN: STD3019C44

5331-00-604-1466 (STD3000E5)

NIIN: 00-604-1466
In stock
NSN: 5331-00-604-1466
FSC Code: 5331
MPN: STD3000E5

5331-00-027-5800 (STD3017D5)

NIIN: 00-027-5800
In stock
NSN: 5331-00-027-5800
FSC Code: 5331
MPN: STD3017D5

5331-00-182-3580 (STD3000E29)

NIIN: 00-182-3580
In stock
NSN: 5331-00-182-3580
FSC Code: 5331
MPN: STD3000E29

5331-00-604-1469 (STD3000E48)

NIIN: 00-604-1469
In stock
NSN: 5331-00-604-1469
FSC Code: 5331
MPN: STD3000E48

5331-00-878-5580 (STD3000E24)

NIIN: 00-878-5580
In stock
NSN: 5331-00-878-5580
FSC Code: 5331
MPN: STD3000E24

5331-01-180-2415 (STD3000E41)

NIIN: 01-180-2415
In stock
NSN: 5331-01-180-2415
FSC Code: 5331
MPN: STD3000E41

5331-00-950-2946 (STD3000E27)

NIIN: 00-950-2946
In stock
NSN: 5331-00-950-2946
FSC Code: 5331
MPN: STD3000E27

5331-00-951-8683 (STD3000E1)

NIIN: 00-951-8683
In stock
NSN: 5331-00-951-8683
FSC Code: 5331
MPN: STD3000E1

5331-00-618-0334 (STD3000C21)

NIIN: 00-618-0334
In stock
NSN: 5331-00-618-0334
FSC Code: 5331
MPN: STD3000C21

5331-00-706-7228 (STD3000E19)

NIIN: 00-706-7228
In stock
NSN: 5331-00-706-7228
FSC Code: 5331
MPN: STD3000E19

5331-00-069-9643 (STD1006)

NIIN: 00-069-9643
In stock
NSN: 5331-00-069-9643
FSC Code: 5331
MPN: STD1006

5331-01-097-0885 (STD101-37)

NIIN: 01-097-0885
In stock
NSN: 5331-01-097-0885
FSC Code: 5331
MPN: STD10137

5331-01-285-4806 (STAV047M019)

NIIN: 01-285-4806
In stock
NSN: 5331-01-285-4806
FSC Code: 5331
MPN: STAV047M019

5331-01-278-3793 (ST521Z6B)

NIIN: 01-278-3793
In stock
NSN: 5331-01-278-3793
FSC Code: 5331
MPN: ST521Z6B

5331-01-332-2142 (ST542Z10B)

NIIN: 01-332-2142
In stock
NSN: 5331-01-332-2142
FSC Code: 5331
MPN: ST542Z10B

5331-01-331-7155 (ST511Z15BMIL)

NIIN: 01-331-7155
In stock
NSN: 5331-01-331-7155
FSC Code: 5331
MPN: ST511Z15BMIL

5331-01-188-9420 (ST506-Z-5B)

NIIN: 01-188-9420
In stock
NSN: 5331-01-188-9420
FSC Code: 5331
MPN: ST506Z5B

5331-01-190-1859 (ST504Z5BMIL)

NIIN: 01-190-1859
In stock
NSN: 5331-01-190-1859
FSC Code: 5331
MPN: ST504Z5BMIL

5331-00-922-5129 (ST3001-018)

NIIN: 00-922-5129
In stock
NSN: 5331-00-922-5129
FSC Code: 5331
MPN: ST3001018

5331-00-922-5045 (ST3001-019)

NIIN: 00-922-5045
In stock
NSN: 5331-00-922-5045
FSC Code: 5331
MPN: ST3001019

5331-01-138-7111 (ST264-Z-5-B)

NIIN: 01-138-7111
In stock
NSN: 5331-01-138-7111
FSC Code: 5331
MPN: ST264Z5B

5331-01-218-4931 (ST2283-018)

NIIN: 01-218-4931
In stock
NSN: 5331-01-218-4931
FSC Code: 5331
MPN: ST2283018

5331-01-008-1150 (ST1050-251)

NIIN: 01-008-1150
In stock
NSN: 5331-01-008-1150
FSC Code: 5331
MPN: ST1050251

5331-01-013-8655 (ST11228)

NIIN: 01-013-8655
In stock
NSN: 5331-01-013-8655
FSC Code: 5331
MPN: ST11228

5331-01-010-2929 (ST1050-158)

NIIN: 01-010-2929
In stock
NSN: 5331-01-010-2929
FSC Code: 5331
MPN: ST1050158

5331-01-079-2492 (ST1050-236)

NIIN: 01-079-2492
In stock
NSN: 5331-01-079-2492
FSC Code: 5331
MPN: ST1050236

5331-01-079-1400 (ST1050-129)

NIIN: 01-079-1400
In stock
NSN: 5331-01-079-1400
FSC Code: 5331
MPN: ST1050129

5331-01-013-8654 (ST11248)

NIIN: 01-013-8654
In stock
NSN: 5331-01-013-8654
FSC Code: 5331
MPN: ST11248