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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.

5331-01-481-4049 (A9A15701-00616)

NIIN: 01-481-4049
In stock
NSN: 5331-01-481-4049
FSC Code: 5331
MPN: A9A1570100616

5331-01-481-3962 (A9A12701-00616)

NIIN: 01-481-3962
In stock
NSN: 5331-01-481-3962
FSC Code: 5331
MPN: A9A1270100616

5331-01-526-7199 (A915601-00616)

NIIN: 01-526-7199
In stock
NSN: 5331-01-526-7199
FSC Code: 5331
MPN: A91560100616

5331-01-471-1710 (4074T58P02)

NIIN: 01-471-1710
In stock
NSN: 5331-01-471-1710
FSC Code: 5331
MPN: 4074T58P02

5331-01-526-8376 (A9A21201-00616)

NIIN: 01-526-8376
In stock
NSN: 5331-01-526-8376
FSC Code: 5331
MPN: A9A2120100616

5331-01-526-8373 (A9A11301-00616)

NIIN: 01-526-8373
In stock
NSN: 5331-01-526-8373
FSC Code: 5331
MPN: A9A1130100616

5331-01-481-3965 (A9A16501-00616)

NIIN: 01-481-3965
In stock
NSN: 5331-01-481-3965
FSC Code: 5331
MPN: A9A1650100616

5331-01-519-0952 (A901105-00616)

NIIN: 01-519-0952
In stock
NSN: 5331-01-519-0952
FSC Code: 5331
MPN: A90110500616

5331-01-526-8369 (A911503-00616)

NIIN: 01-526-8369
In stock
NSN: 5331-01-526-8369
FSC Code: 5331
MPN: A91150300616

5331-01-481-4109 (A9A01901-00616)

NIIN: 01-481-4109
In stock
NSN: 5331-01-481-4109
FSC Code: 5331
MPN: A9A0190100616

5331-01-544-5512 (40741PC16)

NIIN: 01-544-5512
In stock
NSN: 5331-01-544-5512
FSC Code: 5331
MPN: 40741PC16

5331-00-730-6414 (816919-3)

NIIN: 00-730-6414
In stock
NSN: 5331-00-730-6414
FSC Code: 5331
MPN: 8169193

5331-00-913-4075 (816-245)

NIIN: 00-913-4075
In stock
NSN: 5331-00-913-4075
FSC Code: 5331
MPN: 816245

5331-00-559-8708 (815743-1)

NIIN: 00-559-8708
In stock
NSN: 5331-00-559-8708
FSC Code: 5331
MPN: 8157431

5331-00-576-8536 (815678-1)

NIIN: 00-576-8536
In stock
NSN: 5331-00-576-8536
FSC Code: 5331
MPN: 8156781

5331-01-371-1701 (40663-5)

NIIN: 01-371-1701
In stock
NSN: 5331-01-371-1701
FSC Code: 5331
MPN: 406635

5331-01-382-3666 (40651-5)

NIIN: 01-382-3666
In stock
NSN: 5331-01-382-3666
FSC Code: 5331
MPN: 406515

5331-01-127-7613 (815-1853010)

NIIN: 01-127-7613
In stock
NSN: 5331-01-127-7613
FSC Code: 5331
MPN: 8151853010

5331-01-244-8987 (815-1197221)

NIIN: 01-244-8987
In stock
NSN: 5331-01-244-8987
FSC Code: 5331
MPN: 8151197221

5331-00-945-4400 (815058-1)

NIIN: 00-945-4400
In stock
NSN: 5331-00-945-4400
FSC Code: 5331
MPN: 8150581

5331-01-491-3885 (406-23)

NIIN: 01-491-3885
In stock
NSN: 5331-01-491-3885
FSC Code: 5331
MPN: 40623

5331-01-197-0893 (81476-1)

NIIN: 01-197-0893
In stock
NSN: 5331-01-197-0893
FSC Code: 5331
MPN: 814761

5331-00-756-9083 (814546-21)

NIIN: 00-756-9083
In stock
NSN: 5331-00-756-9083
FSC Code: 5331
MPN: 81454621

5331-00-106-0539 (8145-366Y)

NIIN: 00-106-0539
In stock
NSN: 5331-00-106-0539
FSC Code: 5331
MPN: 8145366Y

5331-00-027-7556 (814379-1)

NIIN: 00-027-7556
In stock
NSN: 5331-00-027-7556
FSC Code: 5331
MPN: 8143791

5331-00-171-6406 (814278-1)

NIIN: 00-171-6406
In stock
NSN: 5331-00-171-6406
FSC Code: 5331
MPN: 8142781

5331-01-205-9790 (813967-7)

NIIN: 01-205-9790
In stock
NSN: 5331-01-205-9790
FSC Code: 5331
MPN: 8139677

5331-01-338-6305 (8-132V709-90)

NIIN: 01-338-6305
In stock
NSN: 5331-01-338-6305
FSC Code: 5331
MPN: 8132V70990

5331-00-198-6182 (81312S41-622PC4)

NIIN: 00-198-6182
In stock
NSN: 5331-00-198-6182
FSC Code: 5331
MPN: 81312S41622PC4

5331-00-530-2312 (813058-1)

NIIN: 00-530-2312
In stock
NSN: 5331-00-530-2312
FSC Code: 5331
MPN: 8130581

5331-01-228-9538 (8121H)

NIIN: 01-228-9538
In stock
NSN: 5331-01-228-9538
FSC Code: 5331
MPN: 8121H

5331-01-277-0176 (81218-0005)

NIIN: 01-277-0176
In stock
NSN: 5331-01-277-0176
FSC Code: 5331
MPN: 812180005

5331-01-421-2895 (405-26X5-34)

NIIN: 01-421-2895
In stock
NSN: 5331-01-421-2895
FSC Code: 5331
MPN: 40526X534

5331-01-481-7435 (40511-1)

NIIN: 01-481-7435
In stock
NSN: 5331-01-481-7435
FSC Code: 5331
MPN: 405111

5331-01-481-6938 (40511-8)

NIIN: 01-481-6938
In stock
NSN: 5331-01-481-6938
FSC Code: 5331
MPN: 405118

5331-01-481-6940 (40511-9)

NIIN: 01-481-6940
In stock
NSN: 5331-01-481-6940
FSC Code: 5331
MPN: 405119

5331-01-481-6942 (40511-13)

NIIN: 01-481-6942
In stock
NSN: 5331-01-481-6942
FSC Code: 5331
MPN: 4051113

5331-01-481-6941 (40511-11)

NIIN: 01-481-6941
In stock
NSN: 5331-01-481-6941
FSC Code: 5331
MPN: 4051111

5331-01-481-6939 (40511-2)

NIIN: 01-481-6939
In stock
NSN: 5331-01-481-6939
FSC Code: 5331
MPN: 405112

5331-01-481-6185 (40511-5)

NIIN: 01-481-6185
In stock
NSN: 5331-01-481-6185
FSC Code: 5331
MPN: 405115

5331-01-481-6183 (40511-4)

NIIN: 01-481-6183
In stock
NSN: 5331-01-481-6183
FSC Code: 5331
MPN: 405114

5331-01-481-6187 (40511-14)

NIIN: 01-481-6187
In stock
NSN: 5331-01-481-6187
FSC Code: 5331
MPN: 4051114

5331-01-481-6929 (40511-10)

NIIN: 01-481-6929
In stock
NSN: 5331-01-481-6929
FSC Code: 5331
MPN: 4051110

5331-01-451-5951 (405-012)

NIIN: 01-451-5951
In stock
NSN: 5331-01-451-5951
FSC Code: 5331
MPN: 405012

5331-01-441-4577 (405-012)

NIIN: 01-441-4577
In stock
NSN: 5331-01-441-4577
FSC Code: 5331
MPN: 405012

5331-01-452-6481 (405-011)

NIIN: 01-452-6481
In stock
NSN: 5331-01-452-6481
FSC Code: 5331
MPN: 405011

5331-01-551-9830 (404-R)

NIIN: 01-551-9830
In stock
NSN: 5331-01-551-9830
FSC Code: 5331
MPN: 404R

5331-01-041-9175 (8115-MNP-082-10)

NIIN: 01-041-9175
In stock
NSN: 5331-01-041-9175
FSC Code: 5331
MPN: 8115MNP08210