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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.

5331-00-851-6431 (561D1)

NIIN: 00-851-6431
In stock
NSN: 5331-00-851-6431
FSC Code: 5331
MPN: 561D1

5331-01-377-3712 (S30652-210N)

NIIN: 01-377-3712
In stock
NSN: 5331-01-377-3712
FSC Code: 5331
MPN: S30652210N

5331-01-470-0703 (MS28778-042)

NIIN: 01-470-0703
In stock
NSN: 5331-01-470-0703
FSC Code: 5331
MPN: MS28778042

5331-01-336-2269 (5-616)

NIIN: 01-336-2269
In stock
NSN: 5331-01-336-2269
FSC Code: 5331
MPN: 5616

5331-01-249-7047 (561-515-0004)

NIIN: 01-249-7047
In stock
NSN: 5331-01-249-7047
FSC Code: 5331
MPN: 5615150004

5331-01-250-6069 (561-515-0003)

NIIN: 01-250-6069
In stock
NSN: 5331-01-250-6069
FSC Code: 5331
MPN: 5615150003

5331-00-135-3015 (5615-12-41N)

NIIN: 00-135-3015
In stock
NSN: 5331-00-135-3015
FSC Code: 5331
MPN: 56151241N

5331-01-250-7089 (561-515-0001)

NIIN: 01-250-7089
In stock
NSN: 5331-01-250-7089
FSC Code: 5331
MPN: 5615150001

5331-01-308-5848 (561-502-9129)

NIIN: 01-308-5848
In stock
NSN: 5331-01-308-5848
FSC Code: 5331
MPN: 5615029129

5331-01-227-5600 (561-271-107)

NIIN: 01-227-5600
In stock
NSN: 5331-01-227-5600
FSC Code: 5331
MPN: 561271107

5331-01-323-2716 (560K0124)

NIIN: 01-323-2716
In stock
NSN: 5331-01-323-2716
FSC Code: 5331
MPN: 560K0124

5331-01-270-2628 (561-008-9112)

NIIN: 01-270-2628
In stock
NSN: 5331-01-270-2628
FSC Code: 5331
MPN: 5610089112

5331-01-323-2713 (560K1094)

NIIN: 01-323-2713
In stock
NSN: 5331-01-323-2713
FSC Code: 5331
MPN: 560K1094

5331-99-061-4336 (3880047)

NIIN: 99-061-4336
In stock
NSN: 5331-99-061-4336
FSC Code: 5331
MPN: 3880047

5331-01-323-2714 (560K1069)

NIIN: 01-323-2714
In stock
NSN: 5331-01-323-2714
FSC Code: 5331
MPN: 560K1069

5331-01-323-2727 (560F1023)

NIIN: 01-323-2727
In stock
NSN: 5331-01-323-2727
FSC Code: 5331
MPN: 560F1023

5331-01-323-2715 (560K0079)

NIIN: 01-323-2715
In stock
NSN: 5331-01-323-2715
FSC Code: 5331
MPN: 560K0079

5331-01-323-2717 (560F1022)

NIIN: 01-323-2717
In stock
NSN: 5331-01-323-2717
FSC Code: 5331
MPN: 560F1022

5331-01-323-2719 (560F0021)

NIIN: 01-323-2719
In stock
NSN: 5331-01-323-2719
FSC Code: 5331
MPN: 560F0021

5331-01-323-2722 (560F0017)

NIIN: 01-323-2722
In stock
NSN: 5331-01-323-2722
FSC Code: 5331
MPN: 560F0017

5331-01-323-2712 (560K0044)

NIIN: 01-323-2712
In stock
NSN: 5331-01-323-2712
FSC Code: 5331
MPN: 560K0044

5331-01-323-2721 (560F1031)

NIIN: 01-323-2721
In stock
NSN: 5331-01-323-2721
FSC Code: 5331
MPN: 560F1031

5331-01-323-2725 (560K0027)

NIIN: 01-323-2725
In stock
NSN: 5331-01-323-2725
FSC Code: 5331
MPN: 560K0027

5331-01-323-2723 (560F0020)

NIIN: 01-323-2723
In stock
NSN: 5331-01-323-2723
FSC Code: 5331
MPN: 560F0020

5331-01-323-2711 (560F0013)

NIIN: 01-323-2711
In stock
NSN: 5331-01-323-2711
FSC Code: 5331
MPN: 560F0013

5331-01-323-2726 (560F0009)

NIIN: 01-323-2726
In stock
NSN: 5331-01-323-2726
FSC Code: 5331
MPN: 560F0009

5331-01-323-2718 (560B1008)

NIIN: 01-323-2718
In stock
NSN: 5331-01-323-2718
FSC Code: 5331
MPN: 560B1008

5331-01-323-2724 (560B0016)

NIIN: 01-323-2724
In stock
NSN: 5331-01-323-2724
FSC Code: 5331
MPN: 560B0016

5331-01-525-1618 (2-041)

NIIN: 01-525-1618
In stock
NSN: 5331-01-525-1618
FSC Code: 5331
MPN: 2041

5331-01-386-2049 (2-041)

NIIN: 01-386-2049
In stock
NSN: 5331-01-386-2049
FSC Code: 5331
MPN: 2041

5331-01-282-7693 (5608D)

NIIN: 01-282-7693
In stock
NSN: 5331-01-282-7693
FSC Code: 5331
MPN: 5608D

5331-01-226-3203 (5607-80-010)

NIIN: 01-226-3203
In stock
NSN: 5331-01-226-3203
FSC Code: 5331
MPN: 560780010

5331-00-441-1615 (5605-2615-003)

NIIN: 00-441-1615
In stock
NSN: 5331-00-441-1615
FSC Code: 5331
MPN: 56052615003

5331-00-559-8878 (5605-5817-001)

NIIN: 00-559-8878
In stock
NSN: 5331-00-559-8878
FSC Code: 5331
MPN: 56055817001

5331-00-559-8887 (5605-1717-001)

NIIN: 00-559-8887
In stock
NSN: 5331-00-559-8887
FSC Code: 5331
MPN: 56051717001

5331-00-155-7310 (5605-1515-001)

NIIN: 00-155-7310
In stock
NSN: 5331-00-155-7310
FSC Code: 5331
MPN: 56051515001

5331-00-131-2180 (5602BPC10)

NIIN: 00-131-2180
In stock
NSN: 5331-00-131-2180
FSC Code: 5331
MPN: 5602BPC10

5331-00-230-1897 (5601PC3)

NIIN: 00-230-1897
In stock
NSN: 5331-00-230-1897
FSC Code: 5331
MPN: 5601PC3

5331-01-312-7601 (560-062-360)

NIIN: 01-312-7601
In stock
NSN: 5331-01-312-7601
FSC Code: 5331
MPN: 560062360

5331-01-300-5103 (560-058-360)

NIIN: 01-300-5103
In stock
NSN: 5331-01-300-5103
FSC Code: 5331
MPN: 560058360

5331-01-300-5104 (560-040-360)

NIIN: 01-300-5104
In stock
NSN: 5331-01-300-5104
FSC Code: 5331
MPN: 560040360

5331-01-278-1753 (560-047-360)

NIIN: 01-278-1753
In stock
NSN: 5331-01-278-1753
FSC Code: 5331
MPN: 560047360

5331-01-300-5105 (560-030-363)

NIIN: 01-300-5105
In stock
NSN: 5331-01-300-5105
FSC Code: 5331
MPN: 560030363

5331-01-125-1891 (560-020-360)

NIIN: 01-125-1891
In stock
NSN: 5331-01-125-1891
FSC Code: 5331
MPN: 560020360

5331-01-286-1672 (560-028-363)

NIIN: 01-286-1672
In stock
NSN: 5331-01-286-1672
FSC Code: 5331
MPN: 560028363

5331-01-033-8619 (560-021-360)

NIIN: 01-033-8619
In stock
NSN: 5331-01-033-8619
FSC Code: 5331
MPN: 560021360

5331-01-176-7935 (560-023-360)

NIIN: 01-176-7935
In stock
NSN: 5331-01-176-7935
FSC Code: 5331
MPN: 560023360

5331-01-182-3060 (560-022-360)

NIIN: 01-182-3060
In stock
NSN: 5331-01-182-3060
FSC Code: 5331
MPN: 560022360