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.

5331-00-917-9799 (W3704-2)

NIIN: 00-917-9799
In stock
NSN: 5331-00-917-9799
FSC Code: 5331
MPN: W37042

5331-00-917-7823 (W3706-2)

NIIN: 00-917-7823
In stock
NSN: 5331-00-917-7823
FSC Code: 5331
MPN: W37062

5331-00-196-7042 (W306)

NIIN: 00-196-7042
In stock
NSN: 5331-00-196-7042
FSC Code: 5331
MPN: W306

5331-01-559-5339 (FD3370)

NIIN: 01-559-5339
In stock
NSN: 5331-01-559-5339
FSC Code: 5331
MPN: FD3370

5331-01-571-5028 (FD2585)

NIIN: 01-571-5028
In stock
NSN: 5331-01-571-5028
FSC Code: 5331
MPN: FD2585

5331-01-296-0288 (W-244469)

NIIN: 01-296-0288
In stock
NSN: 5331-01-296-0288
FSC Code: 5331
MPN: W244469

5331-01-296-0287 (W-244469)

NIIN: 01-296-0287
In stock
NSN: 5331-01-296-0287
FSC Code: 5331
MPN: W244469

5331-01-554-4436 (FD0885)

NIIN: 01-554-4436
In stock
NSN: 5331-01-554-4436
FSC Code: 5331
MPN: FD0885

5331-01-279-0490 (W22367)

NIIN: 01-279-0490
In stock
NSN: 5331-01-279-0490
FSC Code: 5331
MPN: W22367

5331-01-285-4791 (W22367)

NIIN: 01-285-4791
In stock
NSN: 5331-01-285-4791
FSC Code: 5331
MPN: W22367

5331-99-700-0057 (H729-301765)

NIIN: 99-700-0057
In stock
NSN: 5331-99-700-0057
FSC Code: 5331
MPN: H729301765

5331-99-700-1168 (H729-301772)

NIIN: 99-700-1168
In stock
NSN: 5331-99-700-1168
FSC Code: 5331
MPN: H729301772

5331-99-109-0540 (FBS70C13)

NIIN: 99-109-0540
In stock
NSN: 5331-99-109-0540
FSC Code: 5331
MPN: FBS70C13

5331-99-109-0499 (FBS70B6)

NIIN: 99-109-0499
In stock
NSN: 5331-99-109-0499
FSC Code: 5331
MPN: FBS70B6

5331-99-606-5388 (FBS1211)

NIIN: 99-606-5388
In stock
NSN: 5331-99-606-5388
FSC Code: 5331
MPN: FBS1211

5331-00-491-5491 (W02307)

NIIN: 00-491-5491
In stock
NSN: 5331-00-491-5491
FSC Code: 5331
MPN: W02307

5331-01-380-0247 (FB-50009)

NIIN: 01-380-0247
In stock
NSN: 5331-01-380-0247
FSC Code: 5331
MPN: FB50009

5331-01-269-7450 (W006001-003)

NIIN: 01-269-7450
In stock
NSN: 5331-01-269-7450
FSC Code: 5331
MPN: W006001003

5331-01-281-0568 (W0011-0011-002)

NIIN: 01-281-0568
In stock
NSN: 5331-01-281-0568
FSC Code: 5331
MPN: W00110011002

5331-01-491-7925 (FA05002-21)

NIIN: 01-491-7925
In stock
NSN: 5331-01-491-7925
FSC Code: 5331
MPN: FA0500221

5331-01-491-7918 (FA05002-19)

NIIN: 01-491-7918
In stock
NSN: 5331-01-491-7918
FSC Code: 5331
MPN: FA0500219

5331-01-519-4931 (FA05002-20)

NIIN: 01-519-4931
In stock
NSN: 5331-01-519-4931
FSC Code: 5331
MPN: FA0500220

5331-01-317-6281 (VT10105)

NIIN: 01-317-6281
In stock
NSN: 5331-01-317-6281
FSC Code: 5331
MPN: VT10105

5331-01-540-7196 (F950R)

NIIN: 01-540-7196
In stock
NSN: 5331-01-540-7196
FSC Code: 5331
MPN: F950R

5331-01-464-3329 (F9300AJ)

NIIN: 01-464-3329
In stock
NSN: 5331-01-464-3329
FSC Code: 5331
MPN: F9300AJ

5331-01-464-3323 (F9341JP)

NIIN: 01-464-3323
In stock
NSN: 5331-01-464-3323
FSC Code: 5331
MPN: F9341JP

5331-01-388-8968 (F738-10-B11-G-PC-23)

NIIN: 01-388-8968
In stock
NSN: 5331-01-388-8968
FSC Code: 5331
MPN: F73810B11GPC23

5331-01-355-4805 (F69200222)

NIIN: 01-355-4805
In stock
NSN: 5331-01-355-4805
FSC Code: 5331
MPN: F69200222

5331-01-354-4163 (F69200210)

NIIN: 01-354-4163
In stock
NSN: 5331-01-354-4163
FSC Code: 5331
MPN: F69200210

5331-01-372-9308 (F-661-3IN-11)

NIIN: 01-372-9308
In stock
NSN: 5331-01-372-9308
FSC Code: 5331
MPN: F6613IN11

5331-01-200-6014 (VI70-8C-K4)

NIIN: 01-200-6014
In stock
NSN: 5331-01-200-6014
FSC Code: 5331
MPN: VI708CK4

5331-00-918-2477 (VG9095)

NIIN: 00-918-2477
In stock
NSN: 5331-00-918-2477
FSC Code: 5331
MPN: VG9095

5331-01-394-3470 (F-46660)

NIIN: 01-394-3470
In stock
NSN: 5331-01-394-3470
FSC Code: 5331
MPN: F46660

5331-01-533-2482 (OR-001-09)

NIIN: 01-533-2482
In stock
NSN: 5331-01-533-2482
FSC Code: 5331
MPN: OR00109

5331-01-191-8037 (VDH-925G)

NIIN: 01-191-8037
In stock
NSN: 5331-01-191-8037
FSC Code: 5331
MPN: VDH925G

5331-01-191-8038 (VDH-324G)

NIIN: 01-191-8038
In stock
NSN: 5331-01-191-8038
FSC Code: 5331
MPN: VDH324G

5331-01-193-9385 (VDH-424G)

NIIN: 01-193-9385
In stock
NSN: 5331-01-193-9385
FSC Code: 5331
MPN: VDH424G

5331-01-525-6737 (F4003-6)

NIIN: 01-525-6737
In stock
NSN: 5331-01-525-6737
FSC Code: 5331
MPN: F40036

5331-01-472-2716 (F4003-4)

NIIN: 01-472-2716
In stock
NSN: 5331-01-472-2716
FSC Code: 5331
MPN: F40034

5331-01-353-1916 (F37060910)

NIIN: 01-353-1916
In stock
NSN: 5331-01-353-1916
FSC Code: 5331
MPN: F37060910

5331-01-438-0328 (F37060914)

NIIN: 01-438-0328
In stock
NSN: 5331-01-438-0328
FSC Code: 5331
MPN: F37060914

5331-01-353-1915 (F37060916)

NIIN: 01-353-1915
In stock
NSN: 5331-01-353-1915
FSC Code: 5331
MPN: F37060916

5331-01-356-2446 (F-375-B-120-ZZZ)

NIIN: 01-356-2446
In stock
NSN: 5331-01-356-2446
FSC Code: 5331
MPN: F375B120ZZZ

5331-01-353-1917 (F37040326)

NIIN: 01-353-1917
In stock
NSN: 5331-01-353-1917
FSC Code: 5331
MPN: F37040326

5331-01-353-1911 (F37020159)

NIIN: 01-353-1911
In stock
NSN: 5331-01-353-1911
FSC Code: 5331
MPN: F37020159

5331-01-353-1913 (F37060912)

NIIN: 01-353-1913
In stock
NSN: 5331-01-353-1913
FSC Code: 5331
MPN: F37060912

5331-01-353-1918 (F37030210E)

NIIN: 01-353-1918
In stock
NSN: 5331-01-353-1918
FSC Code: 5331
MPN: F37030210E

5331-01-353-1914 (F37020155)

NIIN: 01-353-1914
In stock
NSN: 5331-01-353-1914
FSC Code: 5331
MPN: F37020155