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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.

5331-00-949-0180 (566S22)

NIIN: 00-949-0180
In stock
NSN: 5331-00-949-0180
FSC Code: 5331
MPN: 566S22

5331-00-136-5614 (5-669L449-6)

NIIN: 00-136-5614
In stock
NSN: 5331-00-136-5614
FSC Code: 5331
MPN: 5669L4496

5331-01-522-8267 (820-7425867PC1-32)

NIIN: 01-522-8267
In stock
NSN: 5331-01-522-8267
FSC Code: 5331
MPN: 8207425867PC132

5331-01-360-8011 (2-049N756-75)

NIIN: 01-360-8011
In stock
NSN: 5331-01-360-8011
FSC Code: 5331
MPN: 2049N75675

5331-01-205-7485 (5-666N304-75)

NIIN: 01-205-7485
In stock
NSN: 5331-01-205-7485
FSC Code: 5331
MPN: 5666N30475

5331-01-226-9336 (5661-0904)

NIIN: 01-226-9336
In stock
NSN: 5331-01-226-9336
FSC Code: 5331
MPN: 56610904

5331-01-226-9337 (5661-0903)

NIIN: 01-226-9337
In stock
NSN: 5331-01-226-9337
FSC Code: 5331
MPN: 56610903

5331-01-501-3073 (AMS-R-83485/M83485/1-048)

NIIN: 01-501-3073
In stock
NSN: 5331-01-501-3073
FSC Code: 5331
MPN: AMSR83485M834851048

5331-01-007-1626 (5-655N304-75)

NIIN: 01-007-1626
In stock
NSN: 5331-01-007-1626
FSC Code: 5331
MPN: 5655N30475

5331-00-914-5203 (5653PC)

NIIN: 00-914-5203
In stock
NSN: 5331-00-914-5203
FSC Code: 5331
MPN: 5653PC

5331-01-486-1076 (2-046-B612-70)

NIIN: 01-486-1076
In stock
NSN: 5331-01-486-1076
FSC Code: 5331
MPN: 2046B61270

5331-01-014-6171 (5-646N674-70)

NIIN: 01-014-6171
In stock
NSN: 5331-01-014-6171
FSC Code: 5331
MPN: 5646N67470

5331-00-455-0445 (5-643C557-7)

NIIN: 00-455-0445
In stock
NSN: 5331-00-455-0445
FSC Code: 5331
MPN: 5643C5577

5331-01-246-1041 (5-642-47-071)

NIIN: 01-246-1041
In stock
NSN: 5331-01-246-1041
FSC Code: 5331
MPN: 564247071

5331-01-485-3300 (7052637-14)

NIIN: 01-485-3300
In stock
NSN: 5331-01-485-3300
FSC Code: 5331
MPN: 705263714

5331-01-485-6402 (2-045V0835-75)

NIIN: 01-485-6402
In stock
NSN: 5331-01-485-6402
FSC Code: 5331
MPN: 2045V083575

5331-01-360-9032 (2176AX)

NIIN: 01-360-9032
In stock
NSN: 5331-01-360-9032
FSC Code: 5331
MPN: 2176AX

5331-01-271-6391 (564-0113-802)

NIIN: 01-271-6391
In stock
NSN: 5331-01-271-6391
FSC Code: 5331
MPN: 5640113802

5331-01-266-0766 (564-0177-802)

NIIN: 01-266-0766
In stock
NSN: 5331-01-266-0766
FSC Code: 5331
MPN: 5640177802

5331-01-065-2577 (563993-1)

NIIN: 01-065-2577
In stock
NSN: 5331-01-065-2577
FSC Code: 5331
MPN: 5639931

5331-01-085-6773 (563-7067896-225)

NIIN: 01-085-6773
In stock
NSN: 5331-01-085-6773
FSC Code: 5331
MPN: 5637067896225

5331-00-167-5162 (563-7067896-67)

NIIN: 00-167-5162
In stock
NSN: 5331-00-167-5162
FSC Code: 5331
MPN: 563706789667

5331-01-006-0318 (563-7067896-43)

NIIN: 01-006-0318
In stock
NSN: 5331-01-006-0318
FSC Code: 5331
MPN: 563706789643

5331-00-599-3144 (563-4801-931915PC13)

NIIN: 00-599-3144
In stock
NSN: 5331-00-599-3144
FSC Code: 5331
MPN: 5634801931915PC13

5331-00-559-3862 (563431-2)

NIIN: 00-559-3862
In stock
NSN: 5331-00-559-3862
FSC Code: 5331
MPN: 5634312

5331-00-298-5865 (563-4105-930838ALT3PC13)

NIIN: 00-298-5865
In stock
NSN: 5331-00-298-5865
FSC Code: 5331
MPN: 5634105930838ALT3PC13

5331-00-599-3150 (563-4105-931585PC7)

NIIN: 00-599-3150
In stock
NSN: 5331-00-599-3150
FSC Code: 5331
MPN: 5634105931585PC7

5331-00-599-2847 (563-4105-930838ALT3PC14)

NIIN: 00-599-2847
In stock
NSN: 5331-00-599-2847
FSC Code: 5331
MPN: 5634105930838ALT3PC14

5331-00-298-5864 (563-4105-930838ALT3PC12)

NIIN: 00-298-5864
In stock
NSN: 5331-00-298-5864
FSC Code: 5331
MPN: 5634105930838ALT3PC12

5331-01-382-4286 (2-044S355-75)

NIIN: 01-382-4286
In stock
NSN: 5331-01-382-4286
FSC Code: 5331
MPN: 2044S35575

5331-01-361-0032 (A2440-045)

NIIN: 01-361-0032
In stock
NSN: 5331-01-361-0032
FSC Code: 5331
MPN: A2440045

5331-01-478-7191 (2-044-N552-90)

NIIN: 01-478-7191
In stock
NSN: 5331-01-478-7191
FSC Code: 5331
MPN: 2044N55290

5331-01-006-2116 (56254-01)

NIIN: 01-006-2116
In stock
NSN: 5331-01-006-2116
FSC Code: 5331
MPN: 5625401

5331-01-276-1673 (5-624N602-70)

NIIN: 01-276-1673
In stock
NSN: 5331-01-276-1673
FSC Code: 5331
MPN: 5624N60270

5331-01-253-3102 (56229-11)

NIIN: 01-253-3102
In stock
NSN: 5331-01-253-3102
FSC Code: 5331
MPN: 5622911

5331-01-255-2709 (56229-12)

NIIN: 01-255-2709
In stock
NSN: 5331-01-255-2709
FSC Code: 5331
MPN: 5622912

5331-01-249-6735 (5620-SS)

NIIN: 01-249-6735
In stock
NSN: 5331-01-249-6735
FSC Code: 5331
MPN: 5620SS

5331-01-035-9490 (561S10)

NIIN: 01-035-9490
In stock
NSN: 5331-01-035-9490
FSC Code: 5331
MPN: 561S10

5331-01-035-9489 (561S218)

NIIN: 01-035-9489
In stock
NSN: 5331-01-035-9489
FSC Code: 5331
MPN: 561S218

5331-00-044-4790 (561D23)

NIIN: 00-044-4790
In stock
NSN: 5331-00-044-4790
FSC Code: 5331
MPN: 561D23

5331-01-273-6808 (561K12)

NIIN: 01-273-6808
In stock
NSN: 5331-01-273-6808
FSC Code: 5331
MPN: 561K12

5331-00-814-1717 (561D4)

NIIN: 00-814-1717
In stock
NSN: 5331-00-814-1717
FSC Code: 5331
MPN: 561D4

5331-01-273-6807 (561K11)

NIIN: 01-273-6807
In stock
NSN: 5331-01-273-6807
FSC Code: 5331
MPN: 561K11

5331-00-128-1922 (561D25)

NIIN: 00-128-1922
In stock
NSN: 5331-00-128-1922
FSC Code: 5331
MPN: 561D25

5331-00-121-2166 (561D26)

NIIN: 00-121-2166
In stock
NSN: 5331-00-121-2166
FSC Code: 5331
MPN: 561D26

5331-00-850-7538 (561D16)

NIIN: 00-850-7538
In stock
NSN: 5331-00-850-7538
FSC Code: 5331
MPN: 561D16

5331-00-495-3032 (561D19)

NIIN: 00-495-3032
In stock
NSN: 5331-00-495-3032
FSC Code: 5331
MPN: 561D19

5331-00-239-8575 (561D24)

NIIN: 00-239-8575
In stock
NSN: 5331-00-239-8575
FSC Code: 5331
MPN: 561D24