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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.

5331-01-537-0193 (A3.4065-.75IN-ITEM)

NIIN: 01-537-0193
In stock
NSN: 5331-01-537-0193
FSC Code: 5331
MPN: A3406575INITEM

5331-01-561-6991 (A3.4002S-1)

NIIN: 01-561-6991
In stock
NSN: 5331-01-561-6991
FSC Code: 5331
MPN: A34002S1

5331-99-775-0644 (A3.3712-7/1-1/2IN)

NIIN: 99-775-0644
In stock
NSN: 5331-99-775-0644
FSC Code: 5331
MPN: A337127112IN

5331-01-537-0211 (A3.4065-1.250IN-ITEM)

NIIN: 01-537-0211
In stock
NSN: 5331-01-537-0211
FSC Code: 5331
MPN: A340651250INITEM

5331-99-284-2972 (A3.3712-7/1-1/2IN)

NIIN: 99-284-2972
In stock
NSN: 5331-99-284-2972
FSC Code: 5331
MPN: A337127112IN

5331-01-572-6886 (A2916KG)

NIIN: 01-572-6886
In stock
NSN: 5331-01-572-6886
FSC Code: 5331
MPN: A2916KG

5331-01-546-5098 (A2916LZ)

NIIN: 01-546-5098
In stock
NSN: 5331-01-546-5098
FSC Code: 5331
MPN: A2916LZ

5331-01-529-3088 (A2916JP)

NIIN: 01-529-3088
In stock
NSN: 5331-01-529-3088
FSC Code: 5331
MPN: A2916JP

5331-01-529-3048 (A2916HC)

NIIN: 01-529-3048
In stock
NSN: 5331-01-529-3048
FSC Code: 5331
MPN: A2916HC

5331-01-535-6015 (A2916KL)

NIIN: 01-535-6015
In stock
NSN: 5331-01-535-6015
FSC Code: 5331
MPN: A2916KL

5331-01-529-2645 (A2916FB)

NIIN: 01-529-2645
In stock
NSN: 5331-01-529-2645
FSC Code: 5331
MPN: A2916FB

5331-01-517-3769 (A2916KK)

NIIN: 01-517-3769
In stock
NSN: 5331-01-517-3769
FSC Code: 5331
MPN: A2916KK

5331-01-508-3449 (A2916BR)

NIIN: 01-508-3449
In stock
NSN: 5331-01-508-3449
FSC Code: 5331
MPN: A2916BR

5331-01-525-1998 (A2916HJ)

NIIN: 01-525-1998
In stock
NSN: 5331-01-525-1998
FSC Code: 5331
MPN: A2916HJ

5331-01-529-3087 (A2916JR)

NIIN: 01-529-3087
In stock
NSN: 5331-01-529-3087
FSC Code: 5331
MPN: A2916JR

5331-01-529-2647 (A2916FT)

NIIN: 01-529-2647
In stock
NSN: 5331-01-529-2647
FSC Code: 5331
MPN: A2916FT

5331-01-529-2640 (A2916JA)

NIIN: 01-529-2640
In stock
NSN: 5331-01-529-2640
FSC Code: 5331
MPN: A2916JA

5331-01-529-2545 (A2916GH)

NIIN: 01-529-2545
In stock
NSN: 5331-01-529-2545
FSC Code: 5331
MPN: A2916GH

5331-01-518-0410 (A2916AU)

NIIN: 01-518-0410
In stock
NSN: 5331-01-518-0410
FSC Code: 5331
MPN: A2916AU

5331-01-445-3792 (A2916JV)

NIIN: 01-445-3792
In stock
NSN: 5331-01-445-3792
FSC Code: 5331
MPN: A2916JV

5331-01-513-9470 (A2916CR)

NIIN: 01-513-9470
In stock
NSN: 5331-01-513-9470
FSC Code: 5331
MPN: A2916CR

5331-01-535-6069 (A2916BJ)

NIIN: 01-535-6069
In stock
NSN: 5331-01-535-6069
FSC Code: 5331
MPN: A2916BJ

5331-01-513-9747 (A2669DK)

NIIN: 01-513-9747
In stock
NSN: 5331-01-513-9747
FSC Code: 5331
MPN: A2669DK

5331-01-565-4959 (A25163-012-020)

NIIN: 01-565-4959
In stock
NSN: 5331-01-565-4959
FSC Code: 5331
MPN: A25163012020

5331-01-392-4121 (A25163-017-020)

NIIN: 01-392-4121
In stock
NSN: 5331-01-392-4121
FSC Code: 5331
MPN: A25163017020

5331-01-425-9884 (A24400-524)

NIIN: 01-425-9884
In stock
NSN: 5331-01-425-9884
FSC Code: 5331
MPN: A24400524

5331-01-448-0425 (A24400-518)

NIIN: 01-448-0425
In stock
NSN: 5331-01-448-0425
FSC Code: 5331
MPN: A24400518

5331-01-482-1740 (A24400-531)

NIIN: 01-482-1740
In stock
NSN: 5331-01-482-1740
FSC Code: 5331
MPN: A24400531

5331-01-482-1743 (A24400-908)

NIIN: 01-482-1743
In stock
NSN: 5331-01-482-1743
FSC Code: 5331
MPN: A24400908

5331-01-442-4799 (A24400-528)

NIIN: 01-442-4799
In stock
NSN: 5331-01-442-4799
FSC Code: 5331
MPN: A24400528

5331-01-444-5908 (A24400-525)

NIIN: 01-444-5908
In stock
NSN: 5331-01-444-5908
FSC Code: 5331
MPN: A24400525

5331-01-479-2880 (A24400-541)

NIIN: 01-479-2880
In stock
NSN: 5331-01-479-2880
FSC Code: 5331
MPN: A24400541

5331-01-482-1737 (A24400-530)

NIIN: 01-482-1737
In stock
NSN: 5331-01-482-1737
FSC Code: 5331
MPN: A24400530

5331-01-393-5627 (A24400-048)

NIIN: 01-393-5627
In stock
NSN: 5331-01-393-5627
FSC Code: 5331
MPN: A24400048

5331-01-493-6431 (SAE-AS83461/1)

NIIN: 01-493-6431
In stock
NSN: 5331-01-493-6431
FSC Code: 5331
MPN: SAEAS834611

5331-01-377-5221 (A24400-500)

NIIN: 01-377-5221
In stock
NSN: 5331-01-377-5221
FSC Code: 5331
MPN: A24400500

5331-01-425-9882 (A24400-522)

NIIN: 01-425-9882
In stock
NSN: 5331-01-425-9882
FSC Code: 5331
MPN: A24400522

5331-01-488-4990 (A24400-504)

NIIN: 01-488-4990
In stock
NSN: 5331-01-488-4990
FSC Code: 5331
MPN: A24400504

5331-01-345-0051 (A/B33-23)

NIIN: 01-345-0051
In stock
NSN: 5331-01-345-0051
FSC Code: 5331
MPN: AB3323

5331-01-369-2545 (TC-030-G2)

NIIN: 01-369-2545
In stock
NSN: 5331-01-369-2545
FSC Code: 5331
MPN: TC030G2

5331-17-109-1908 (A209793/7087935-42)

NIIN: 17-109-1908
In stock
NSN: 5331-17-109-1908
FSC Code: 5331
MPN: A209793708793542

5331-17-109-1904 (A209793/7087935-26)

NIIN: 17-109-1904
In stock
NSN: 5331-17-109-1904
FSC Code: 5331
MPN: A209793708793526

5331-01-559-5753 (A203AR012)

NIIN: 01-559-5753
In stock
NSN: 5331-01-559-5753
FSC Code: 5331
MPN: A203AR012

5331-01-413-8509 (A-20039)

NIIN: 01-413-8509
In stock
NSN: 5331-01-413-8509
FSC Code: 5331
MPN: A20039

5331-21-914-3739 (A2)

NIIN: 21-914-3739
In stock
NSN: 5331-21-914-3739
FSC Code: 5331
MPN: A2

5331-21-914-3740 (A2)

NIIN: 21-914-3740
In stock
NSN: 5331-21-914-3740
FSC Code: 5331
MPN: A2

5331-21-914-3737 (A2)

NIIN: 21-914-3737
In stock
NSN: 5331-21-914-3737
FSC Code: 5331
MPN: A2

5331-01-424-8486 (MS28775-123CP)

NIIN: 01-424-8486
In stock
NSN: 5331-01-424-8486
FSC Code: 5331
MPN: MS28775123CP