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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.

5331-01-222-1647 (2666850-145)

NIIN: 01-222-1647
In stock
NSN: 5331-01-222-1647
FSC Code: 5331
MPN: 2666850145

5331-01-220-3369 (2666850-135)

NIIN: 01-220-3369
In stock
NSN: 5331-01-220-3369
FSC Code: 5331
MPN: 2666850135

5331-01-222-1641 (2666850-133)

NIIN: 01-222-1641
In stock
NSN: 5331-01-222-1641
FSC Code: 5331
MPN: 2666850133

5331-01-220-3381 (2666850-132)

NIIN: 01-220-3381
In stock
NSN: 5331-01-220-3381
FSC Code: 5331
MPN: 2666850132

5331-01-222-1640 (2666850-13)

NIIN: 01-222-1640
In stock
NSN: 5331-01-222-1640
FSC Code: 5331
MPN: 266685013

5331-01-220-3371 (2666850-131)

NIIN: 01-220-3371
In stock
NSN: 5331-01-220-3371
FSC Code: 5331
MPN: 2666850131

5331-01-222-1648 (2666850-128)

NIIN: 01-222-1648
In stock
NSN: 5331-01-222-1648
FSC Code: 5331
MPN: 2666850128

5331-01-220-3356 (2666850-127)

NIIN: 01-220-3356
In stock
NSN: 5331-01-220-3356
FSC Code: 5331
MPN: 2666850127

5331-01-220-3374 (2666850-12)

NIIN: 01-220-3374
In stock
NSN: 5331-01-220-3374
FSC Code: 5331
MPN: 266685012

5331-01-220-3360 (2666850-114)

NIIN: 01-220-3360
In stock
NSN: 5331-01-220-3360
FSC Code: 5331
MPN: 2666850114

5331-01-223-1074 (2666850-125)

NIIN: 01-223-1074
In stock
NSN: 5331-01-223-1074
FSC Code: 5331
MPN: 2666850125

5331-01-221-9216 (2666850-126)

NIIN: 01-221-9216
In stock
NSN: 5331-01-221-9216
FSC Code: 5331
MPN: 2666850126

5331-01-220-3376 (2666850-10)

NIIN: 01-220-3376
In stock
NSN: 5331-01-220-3376
FSC Code: 5331
MPN: 266685010

5331-01-222-1638 (2666850-11)

NIIN: 01-222-1638
In stock
NSN: 5331-01-222-1638
FSC Code: 5331
MPN: 266685011

5331-01-418-6766 (06016-13120)

NIIN: 01-418-6766
In stock
NSN: 5331-01-418-6766
FSC Code: 5331
MPN: 0601613120

5331-01-418-6776 (06016-13060)

NIIN: 01-418-6776
In stock
NSN: 5331-01-418-6776
FSC Code: 5331
MPN: 0601613060

5331-01-418-6770 (06016-13140)

NIIN: 01-418-6770
In stock
NSN: 5331-01-418-6770
FSC Code: 5331
MPN: 0601613140

5331-12-132-7547 (0R40-2-3-37PAB769)

NIIN: 12-132-7547
In stock
NSN: 5331-12-132-7547
FSC Code: 5331
MPN: 0R402337PAB769

5331-00-143-8728 (2661837-1)

NIIN: 00-143-8728
In stock
NSN: 5331-00-143-8728
FSC Code: 5331
MPN: 26618371

5331-00-143-8727 (2661837-2)

NIIN: 00-143-8727
In stock
NSN: 5331-00-143-8727
FSC Code: 5331
MPN: 26618372

5331-00-143-8726 (2661837-4)

NIIN: 00-143-8726
In stock
NSN: 5331-00-143-8726
FSC Code: 5331
MPN: 26618374

5331-00-143-8725 (2661837-6)

NIIN: 00-143-8725
In stock
NSN: 5331-00-143-8725
FSC Code: 5331
MPN: 26618376

5331-01-007-4900 (2661058Y237)

NIIN: 01-007-4900
In stock
NSN: 5331-01-007-4900
FSC Code: 5331
MPN: 2661058Y237

5331-01-007-1618 (2661058Y342)

NIIN: 01-007-1618
In stock
NSN: 5331-01-007-1618
FSC Code: 5331
MPN: 2661058Y342

5331-01-007-1611 (2661058Y261)

NIIN: 01-007-1611
In stock
NSN: 5331-01-007-1611
FSC Code: 5331
MPN: 2661058Y261

5331-01-007-4899 (2661058Y235)

NIIN: 01-007-4899
In stock
NSN: 5331-01-007-4899
FSC Code: 5331
MPN: 2661058Y235

5331-00-851-6656 (2661058Y151)

NIIN: 00-851-6656
In stock
NSN: 5331-00-851-6656
FSC Code: 5331
MPN: 2661058Y151

5331-00-364-9762 (2661058Y036)

NIIN: 00-364-9762
In stock
NSN: 5331-00-364-9762
FSC Code: 5331
MPN: 2661058Y036

5331-01-068-6374 (2661058Y032)

NIIN: 01-068-6374
In stock
NSN: 5331-01-068-6374
FSC Code: 5331
MPN: 2661058Y032

5331-00-381-8930 (2661058Y030)

NIIN: 00-381-8930
In stock
NSN: 5331-00-381-8930
FSC Code: 5331
MPN: 2661058Y030

5331-00-338-2338 (2661058Y011)

NIIN: 00-338-2338
In stock
NSN: 5331-00-338-2338
FSC Code: 5331
MPN: 2661058Y011

5331-01-209-7727 (2661058R015)

NIIN: 01-209-7727
In stock
NSN: 5331-01-209-7727
FSC Code: 5331
MPN: 2661058R015

5331-01-209-7729 (2661058R032)

NIIN: 01-209-7729
In stock
NSN: 5331-01-209-7729
FSC Code: 5331
MPN: 2661058R032

5331-01-560-0760 (060-00088)

NIIN: 01-560-0760
In stock
NSN: 5331-01-560-0760
FSC Code: 5331
MPN: 06000088

5331-00-338-2357 (2661058Y009)

NIIN: 00-338-2357
In stock
NSN: 5331-00-338-2357
FSC Code: 5331
MPN: 2661058Y009

5331-01-125-5081 (2661058R035)

NIIN: 01-125-5081
In stock
NSN: 5331-01-125-5081
FSC Code: 5331
MPN: 2661058R035

5331-01-224-8227 (2661058V006)

NIIN: 01-224-8227
In stock
NSN: 5331-01-224-8227
FSC Code: 5331
MPN: 2661058V006

5331-01-209-7728 (2661058R018)

NIIN: 01-209-7728
In stock
NSN: 5331-01-209-7728
FSC Code: 5331
MPN: 2661058R018

5331-01-047-2790 (2661058R034)

NIIN: 01-047-2790
In stock
NSN: 5331-01-047-2790
FSC Code: 5331
MPN: 2661058R034

5331-01-044-2852 (2661058R021)

NIIN: 01-044-2852
In stock
NSN: 5331-01-044-2852
FSC Code: 5331
MPN: 2661058R021

5331-01-047-3977 (2661058R006)

NIIN: 01-047-3977
In stock
NSN: 5331-01-047-3977
FSC Code: 5331
MPN: 2661058R006

5331-01-047-9369 (2661058R024)

NIIN: 01-047-9369
In stock
NSN: 5331-01-047-9369
FSC Code: 5331
MPN: 2661058R024

5331-01-047-3978 (2661058R011)

NIIN: 01-047-3978
In stock
NSN: 5331-01-047-3978
FSC Code: 5331
MPN: 2661058R011

5331-01-004-6979 (2661058R023)

NIIN: 01-004-6979
In stock
NSN: 5331-01-004-6979
FSC Code: 5331
MPN: 2661058R023

5331-00-627-3683 (2661058R011)

NIIN: 00-627-3683
In stock
NSN: 5331-00-627-3683
FSC Code: 5331
MPN: 2661058R011

5331-01-006-9481 (2661058R016)

NIIN: 01-006-9481
In stock
NSN: 5331-01-006-9481
FSC Code: 5331
MPN: 2661058R016

5331-01-004-6975 (2661058R012)

NIIN: 01-004-6975
In stock
NSN: 5331-01-004-6975
FSC Code: 5331
MPN: 2661058R012

5331-01-004-6974 (2661058R013)

NIIN: 01-004-6974
In stock
NSN: 5331-01-004-6974
FSC Code: 5331
MPN: 2661058R013