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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.

5331-01-096-8818 (54370-900)

NIIN: 01-096-8818
In stock
NSN: 5331-01-096-8818
FSC Code: 5331
MPN: 54370900

5331-01-365-1462 (2002AS810-1)

NIIN: 01-365-1462
In stock
NSN: 5331-01-365-1462
FSC Code: 5331
MPN: 2002AS8101

5331-01-366-0285 (3356ASAS813-1)

NIIN: 01-366-0285
In stock
NSN: 5331-01-366-0285
FSC Code: 5331
MPN: 3356ASAS8131

5331-01-365-1461 (2002AS707-1)

NIIN: 01-365-1461
In stock
NSN: 5331-01-365-1461
FSC Code: 5331
MPN: 2002AS7071

5331-01-365-3329 (2002AS537-1)

NIIN: 01-365-3329
In stock
NSN: 5331-01-365-3329
FSC Code: 5331
MPN: 2002AS5371

5331-01-365-1460 (2002AS557-1)

NIIN: 01-365-1460
In stock
NSN: 5331-01-365-1460
FSC Code: 5331
MPN: 2002AS5571

5331-01-365-8790 (2002AS809-1)

NIIN: 01-365-8790
In stock
NSN: 5331-01-365-8790
FSC Code: 5331
MPN: 2002AS8091

5331-01-366-3060 (2002AS527-1)

NIIN: 01-366-3060
In stock
NSN: 5331-01-366-3060
FSC Code: 5331
MPN: 2002AS5271

5331-01-365-1459 (2002AS5564-1)

NIIN: 01-365-1459
In stock
NSN: 5331-01-365-1459
FSC Code: 5331
MPN: 2002AS55641

5331-01-365-3328 (2002AS505-1)

NIIN: 01-365-3328
In stock
NSN: 5331-01-365-3328
FSC Code: 5331
MPN: 2002AS5051

5331-01-365-1458 (2002AS550-1)

NIIN: 01-365-1458
In stock
NSN: 5331-01-365-1458
FSC Code: 5331
MPN: 2002AS5501

5331-01-365-3327 (2002AS404-1)

NIIN: 01-365-3327
In stock
NSN: 5331-01-365-3327
FSC Code: 5331
MPN: 2002AS4041

5331-01-497-3444 (UFR-23557)

NIIN: 01-497-3444
In stock
NSN: 5331-01-497-3444
FSC Code: 5331
MPN: UFR23557

5331-01-364-9131 (200-252-4490)

NIIN: 01-364-9131
In stock
NSN: 5331-01-364-9131
FSC Code: 5331
MPN: 2002524490

5331-00-449-2977 (5-431S564-6)

NIIN: 00-449-2977
In stock
NSN: 5331-00-449-2977
FSC Code: 5331
MPN: 5431S5646

5331-01-485-0551 (200-2448-070)

NIIN: 01-485-0551
In stock
NSN: 5331-01-485-0551
FSC Code: 5331
MPN: 2002448070

5331-01-530-0611 (200-2442-120)

NIIN: 01-530-0611
In stock
NSN: 5331-01-530-0611
FSC Code: 5331
MPN: 2002442120

5331-01-500-9186 (200-2442-070)

NIIN: 01-500-9186
In stock
NSN: 5331-01-500-9186
FSC Code: 5331
MPN: 2002442070

5331-01-521-1727 (200-2442-110)

NIIN: 01-521-1727
In stock
NSN: 5331-01-521-1727
FSC Code: 5331
MPN: 2002442110

5331-01-521-0987 (200-2470-010)

NIIN: 01-521-0987
In stock
NSN: 5331-01-521-0987
FSC Code: 5331
MPN: 2002470010

5331-01-209-4111 (54314-01)

NIIN: 01-209-4111
In stock
NSN: 5331-01-209-4111
FSC Code: 5331
MPN: 5431401

5331-01-255-2710 (5-430V747-75)

NIIN: 01-255-2710
In stock
NSN: 5331-01-255-2710
FSC Code: 5331
MPN: 5430V74775

5331-01-360-2844 (200-247-4490)

NIIN: 01-360-2844
In stock
NSN: 5331-01-360-2844
FSC Code: 5331
MPN: 2002474490

5331-01-364-9130 (200-246-4490)

NIIN: 01-364-9130
In stock
NSN: 5331-01-364-9130
FSC Code: 5331
MPN: 2002464490

5331-99-819-4949 (200-235-4490)

NIIN: 99-819-4949
In stock
NSN: 5331-99-819-4949
FSC Code: 5331
MPN: 2002354490

5331-99-540-6838 (200-214-4460)

NIIN: 99-540-6838
In stock
NSN: 5331-99-540-6838
FSC Code: 5331
MPN: 2002144460

5331-99-543-4221 (B152-TT4449767)

NIIN: 99-543-4221
In stock
NSN: 5331-99-543-4221
FSC Code: 5331
MPN: B152TT4449767

5331-99-544-3411 (200-215-4480)

NIIN: 99-544-3411
In stock
NSN: 5331-99-544-3411
FSC Code: 5331
MPN: 2002154480

5331-01-475-2762 (SB20-02-1416)

NIIN: 01-475-2762
In stock
NSN: 5331-01-475-2762
FSC Code: 5331
MPN: SB20021416

5331-00-580-8377 (5427-33)

NIIN: 00-580-8377
In stock
NSN: 5331-00-580-8377
FSC Code: 5331
MPN: 542733

5331-00-106-6337 (5427-7)

NIIN: 00-106-6337
In stock
NSN: 5331-00-106-6337
FSC Code: 5331
MPN: 54277

5331-00-255-6667 (5427-41)

NIIN: 00-255-6667
In stock
NSN: 5331-00-255-6667
FSC Code: 5331
MPN: 542741

5331-00-109-7394 (5427-24)

NIIN: 00-109-7394
In stock
NSN: 5331-00-109-7394
FSC Code: 5331
MPN: 542724

5331-01-379-9962 (200145AA)

NIIN: 01-379-9962
In stock
NSN: 5331-01-379-9962
FSC Code: 5331
MPN: 200145AA

5331-01-423-8183 (200-12EE-5)

NIIN: 01-423-8183
In stock
NSN: 5331-01-423-8183
FSC Code: 5331
MPN: 20012EE5

5331-01-423-8184 (200-12EE-6)

NIIN: 01-423-8184
In stock
NSN: 5331-01-423-8184
FSC Code: 5331
MPN: 20012EE6

5331-01-376-0684 (200-118-4470)

NIIN: 01-376-0684
In stock
NSN: 5331-01-376-0684
FSC Code: 5331
MPN: 2001184470

5331-01-361-1505 (200-116-4490)

NIIN: 01-361-1505
In stock
NSN: 5331-01-361-1505
FSC Code: 5331
MPN: 2001164490

5331-01-475-2763 (20-01-1416)

NIIN: 01-475-2763
In stock
NSN: 5331-01-475-2763
FSC Code: 5331
MPN: 20011416

5331-99-212-4644 (G406/8024/3840)

NIIN: 99-212-4644
In stock
NSN: 5331-99-212-4644
FSC Code: 5331
MPN: G40680243840

5331-01-432-9794 (200-113)

NIIN: 01-432-9794
In stock
NSN: 5331-01-432-9794
FSC Code: 5331
MPN: 200113

5331-22-269-2329 (200-1117)

NIIN: 22-269-2329
In stock
NSN: 5331-22-269-2329
FSC Code: 5331
MPN: 2001117

5331-22-269-2328 (200-1102)

NIIN: 22-269-2328
In stock
NSN: 5331-22-269-2328
FSC Code: 5331
MPN: 2001102

5331-99-558-4729 (FRS412-516-01)

NIIN: 99-558-4729
In stock
NSN: 5331-99-558-4729
FSC Code: 5331
MPN: FRS41251601

5331-01-203-8080 (541-5750590REVA)

NIIN: 01-203-8080
In stock
NSN: 5331-01-203-8080
FSC Code: 5331
MPN: 5415750590REVA

5331-01-354-0832 (2001-0052NWND19)

NIIN: 01-354-0832
In stock
NSN: 5331-01-354-0832
FSC Code: 5331
MPN: 20010052NWND19

5331-01-388-1656 (2501275-14)

NIIN: 01-388-1656
In stock
NSN: 5331-01-388-1656
FSC Code: 5331
MPN: 250127514

5331-01-361-7916 (200-044-4490)

NIIN: 01-361-7916
In stock
NSN: 5331-01-361-7916
FSC Code: 5331
MPN: 2000444490