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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.

5331-01-515-9920 (S41727)

NIIN: 01-515-9920
In stock
NSN: 5331-01-515-9920
FSC Code: 5331
MPN: S41727

5331-01-383-5975 (S37606-348-P-20)

NIIN: 01-383-5975
In stock
NSN: 5331-01-383-5975
FSC Code: 5331
MPN: S37606348P20

5331-01-569-4348 (S375Z292QTA)

NIIN: 01-569-4348
In stock
NSN: 5331-01-569-4348
FSC Code: 5331
MPN: S375Z292QTA

5331-01-382-7546 (S3662-12-0.2.5IN-P/N46-GRAFOIL)

NIIN: 01-382-7546
In stock
NSN: 5331-01-382-7546
FSC Code: 5331
MPN: S366212025INPN46GRAFOIL

5331-01-429-4927 (S35600-3062)

NIIN: 01-429-4927
In stock
NSN: 5331-01-429-4927
FSC Code: 5331
MPN: S356003062

5331-01-441-9556 (S35600-3039)

NIIN: 01-441-9556
In stock
NSN: 5331-01-441-9556
FSC Code: 5331
MPN: S356003039

5331-01-395-4777 (S34604040)

NIIN: 01-395-4777
In stock
NSN: 5331-01-395-4777
FSC Code: 5331
MPN: S34604040

5331-01-394-9331 (S34605010)

NIIN: 01-394-9331
In stock
NSN: 5331-01-394-9331
FSC Code: 5331
MPN: S34605010

5331-01-373-6860 (S33157-114-99)

NIIN: 01-373-6860
In stock
NSN: 5331-01-373-6860
FSC Code: 5331
MPN: S3315711499

5331-01-520-6143 (S3278C6)

NIIN: 01-520-6143
In stock
NSN: 5331-01-520-6143
FSC Code: 5331
MPN: S3278C6

5331-01-520-6142 (S3278C4)

NIIN: 01-520-6142
In stock
NSN: 5331-01-520-6142
FSC Code: 5331
MPN: S3278C4

5331-01-365-4617 (S3203-568)

NIIN: 01-365-4617
In stock
NSN: 5331-01-365-4617
FSC Code: 5331
MPN: S3203568

5331-01-365-4616 (S3203-564)

NIIN: 01-365-4616
In stock
NSN: 5331-01-365-4616
FSC Code: 5331
MPN: S3203564

5331-01-482-1108 (S3203-563)

NIIN: 01-482-1108
In stock
NSN: 5331-01-482-1108
FSC Code: 5331
MPN: S3203563

5331-01-354-7661 (S3203-604)

NIIN: 01-354-7661
In stock
NSN: 5331-01-354-7661
FSC Code: 5331
MPN: S3203604

5331-01-562-4726 (S30855-213BAE5)

NIIN: 01-562-4726
In stock
NSN: 5331-01-562-4726
FSC Code: 5331
MPN: S30855213BAE5

5331-01-543-6792 (S30640-0339)

NIIN: 01-543-6792
In stock
NSN: 5331-01-543-6792
FSC Code: 5331
MPN: S306400339

5331-01-562-4734 (S30855-213BAK5)

NIIN: 01-562-4734
In stock
NSN: 5331-01-562-4734
FSC Code: 5331
MPN: S30855213BAK5

5331-01-561-4263 (S30213-013)

NIIN: 01-561-4263
In stock
NSN: 5331-01-561-4263
FSC Code: 5331
MPN: S30213013

5331-01-561-4164 (S30213-015)

NIIN: 01-561-4164
In stock
NSN: 5331-01-561-4164
FSC Code: 5331
MPN: S30213015

5331-01-430-9105 (S300460)

NIIN: 01-430-9105
In stock
NSN: 5331-01-430-9105
FSC Code: 5331
MPN: S300460

5331-01-440-8668 (S300727)

NIIN: 01-440-8668
In stock
NSN: 5331-01-440-8668
FSC Code: 5331
MPN: S300727

5331-01-497-9301 (S2L-115)

NIIN: 01-497-9301
In stock
NSN: 5331-01-497-9301
FSC Code: 5331
MPN: S2L115

5331-01-494-2111 (S2L-012)

NIIN: 01-494-2111
In stock
NSN: 5331-01-494-2111
FSC Code: 5331
MPN: S2L012

5331-01-533-0499 (S2A-222)

NIIN: 01-533-0499
In stock
NSN: 5331-01-533-0499
FSC Code: 5331
MPN: S2A222

5331-01-559-3714 (S2439939-114)

NIIN: 01-559-3714
In stock
NSN: 5331-01-559-3714
FSC Code: 5331
MPN: S2439939114

5331-01-538-2027 (S2439939-5)

NIIN: 01-538-2027
In stock
NSN: 5331-01-538-2027
FSC Code: 5331
MPN: S24399395

5331-01-536-7828 (S2439939-12)

NIIN: 01-536-7828
In stock
NSN: 5331-01-536-7828
FSC Code: 5331
MPN: S243993912

5331-01-565-6439 (S23094-1)

NIIN: 01-565-6439
In stock
NSN: 5331-01-565-6439
FSC Code: 5331
MPN: S230941

5331-01-420-6094 (S211-120)

NIIN: 01-420-6094
In stock
NSN: 5331-01-420-6094
FSC Code: 5331
MPN: S211120

5331-01-422-1758 (S211-331)

NIIN: 01-422-1758
In stock
NSN: 5331-01-422-1758
FSC Code: 5331
MPN: S211331

5331-01-426-2567 (S-1700-80MM)

NIIN: 01-426-2567
In stock
NSN: 5331-01-426-2567
FSC Code: 5331
MPN: S170080MM

5331-01-452-4772 (V70900-44-8)

NIIN: 01-452-4772
In stock
NSN: 5331-01-452-4772
FSC Code: 5331
MPN: V70900448

5331-01-434-1364 (T064642)

NIIN: 01-434-1364
In stock
NSN: 5331-01-434-1364
FSC Code: 5331
MPN: T064642

5331-01-447-9833 (S-12995)

NIIN: 01-447-9833
In stock
NSN: 5331-01-447-9833
FSC Code: 5331
MPN: S12995

5331-01-457-2004 (S12735-3011)

NIIN: 01-457-2004
In stock
NSN: 5331-01-457-2004
FSC Code: 5331
MPN: S127353011

5331-01-505-2307 (S12604-214N)

NIIN: 01-505-2307
In stock
NSN: 5331-01-505-2307
FSC Code: 5331
MPN: S12604214N

5331-01-346-0270 (S-1205/6)

NIIN: 01-346-0270
In stock
NSN: 5331-01-346-0270
FSC Code: 5331
MPN: S12056

5331-01-426-0844 (S113612)

NIIN: 01-426-0844
In stock
NSN: 5331-01-426-0844
FSC Code: 5331
MPN: S113612

5331-01-342-5434 (S102AC6)

NIIN: 01-342-5434
In stock
NSN: 5331-01-342-5434
FSC Code: 5331
MPN: S102AC6

5331-01-342-5433 (S102AC51)

NIIN: 01-342-5433
In stock
NSN: 5331-01-342-5433
FSC Code: 5331
MPN: S102AC51

5331-01-343-2667 (S101B34)

NIIN: 01-343-2667
In stock
NSN: 5331-01-343-2667
FSC Code: 5331
MPN: S101B34

5331-01-343-2666 (S101B33)

NIIN: 01-343-2666
In stock
NSN: 5331-01-343-2666
FSC Code: 5331
MPN: S101B33

5331-01-389-1143 (S10104-1)

NIIN: 01-389-1143
In stock
NSN: 5331-01-389-1143
FSC Code: 5331
MPN: S101041

5331-01-563-1974 (S1001-1.5X55)

NIIN: 01-563-1974
In stock
NSN: 5331-01-563-1974
FSC Code: 5331
MPN: S100115X55

5331-01-563-1952 (S1001-1.5X25)

NIIN: 01-563-1952
In stock
NSN: 5331-01-563-1952
FSC Code: 5331
MPN: S100115X25

5331-01-563-1966 (S1001-1.5X35)

NIIN: 01-563-1966
In stock
NSN: 5331-01-563-1966
FSC Code: 5331
MPN: S100115X35

5331-01-564-3571 (S1001-1.5X77)

NIIN: 01-564-3571
In stock
NSN: 5331-01-564-3571
FSC Code: 5331
MPN: S100115X77