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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.

5331-00-514-4630 (9035-8A)

NIIN: 00-514-4630
In stock
NSN: 5331-00-514-4630
FSC Code: 5331
MPN: 90358A

5331-01-350-2980 (478543R1)

NIIN: 01-350-2980
In stock
NSN: 5331-01-350-2980
FSC Code: 5331
MPN: 478543R1

5331-00-432-6536 (903438C1)

NIIN: 00-432-6536
In stock
NSN: 5331-00-432-6536
FSC Code: 5331
MPN: 903438C1

5331-00-432-6533 (903422C1)

NIIN: 00-432-6533
In stock
NSN: 5331-00-432-6533
FSC Code: 5331
MPN: 903422C1

5331-00-427-7132 (903421C1)

NIIN: 00-427-7132
In stock
NSN: 5331-00-427-7132
FSC Code: 5331
MPN: 903421C1

5331-00-427-7064 (903285C1)

NIIN: 00-427-7064
In stock
NSN: 5331-00-427-7064
FSC Code: 5331
MPN: 903285C1

5331-00-427-7126 (903286C1)

NIIN: 00-427-7126
In stock
NSN: 5331-00-427-7126
FSC Code: 5331
MPN: 903286C1

5331-00-427-7127 (903290C1)

NIIN: 00-427-7127
In stock
NSN: 5331-00-427-7127
FSC Code: 5331
MPN: 903290C1

5331-01-070-9653 (903271C1)

NIIN: 01-070-9653
In stock
NSN: 5331-01-070-9653
FSC Code: 5331
MPN: 903271C1

5331-01-198-3492 (903281C1)

NIIN: 01-198-3492
In stock
NSN: 5331-01-198-3492
FSC Code: 5331
MPN: 903281C1

5331-01-289-0321 (903256C1)

NIIN: 01-289-0321
In stock
NSN: 5331-01-289-0321
FSC Code: 5331
MPN: 903256C1

5331-00-427-7063 (903254C1)

NIIN: 00-427-7063
In stock
NSN: 5331-00-427-7063
FSC Code: 5331
MPN: 903254C1

5331-00-503-6199 (903223-6)

NIIN: 00-503-6199
In stock
NSN: 5331-00-503-6199
FSC Code: 5331
MPN: 9032236

5331-00-879-7917 (903223-32)

NIIN: 00-879-7917
In stock
NSN: 5331-00-879-7917
FSC Code: 5331
MPN: 90322332

5331-00-393-3747 (903217C1)

NIIN: 00-393-3747
In stock
NSN: 5331-00-393-3747
FSC Code: 5331
MPN: 903217C1

5331-00-437-3438 (902E784ITEM7)

NIIN: 00-437-3438
In stock
NSN: 5331-00-437-3438
FSC Code: 5331
MPN: 902E784ITEM7

5331-01-249-7879 (902-9-292)

NIIN: 01-249-7879
In stock
NSN: 5331-01-249-7879
FSC Code: 5331
MPN: 9029292

5331-00-812-1375 (902-8)

NIIN: 00-812-1375
In stock
NSN: 5331-00-812-1375
FSC Code: 5331
MPN: 9028

5331-00-818-3133 (902-69-907-70)

NIIN: 00-818-3133
In stock
NSN: 5331-00-818-3133
FSC Code: 5331
MPN: 9026990770

5331-00-819-4636 (902-7)

NIIN: 00-819-4636
In stock
NSN: 5331-00-819-4636
FSC Code: 5331
MPN: 9027

5331-00-340-3899 (902-75-00)

NIIN: 00-340-3899
In stock
NSN: 5331-00-340-3899
FSC Code: 5331
MPN: 9027500

5331-00-818-3132 (902-65-907-70)

NIIN: 00-818-3132
In stock
NSN: 5331-00-818-3132
FSC Code: 5331
MPN: 9026590770

5331-01-145-6888 (902-6-146-70)

NIIN: 01-145-6888
In stock
NSN: 5331-01-145-6888
FSC Code: 5331
MPN: 902614670

5331-00-882-3596 (902-49)

NIIN: 00-882-3596
In stock
NSN: 5331-00-882-3596
FSC Code: 5331
MPN: 90249

5331-00-752-8191 (902-4AND907-70)

NIIN: 00-752-8191
In stock
NSN: 5331-00-752-8191
FSC Code: 5331
MPN: 9024AND90770

5331-00-057-0209 (902-38)

NIIN: 00-057-0209
In stock
NSN: 5331-00-057-0209
FSC Code: 5331
MPN: 90238

5331-00-825-3208 (902298-38)

NIIN: 00-825-3208
In stock
NSN: 5331-00-825-3208
FSC Code: 5331
MPN: 90229838

5331-00-551-8235 (902-3)

NIIN: 00-551-8235
In stock
NSN: 5331-00-551-8235
FSC Code: 5331
MPN: 9023

5331-00-842-1242 (902281-102)

NIIN: 00-842-1242
In stock
NSN: 5331-00-842-1242
FSC Code: 5331
MPN: 902281102

5331-00-842-1238 (902277-52)

NIIN: 00-842-1238
In stock
NSN: 5331-00-842-1238
FSC Code: 5331
MPN: 90227752

5331-01-236-1752 (902-3)

NIIN: 01-236-1752
In stock
NSN: 5331-01-236-1752
FSC Code: 5331
MPN: 9023

5331-01-013-5828 (902277-125)

NIIN: 01-013-5828
In stock
NSN: 5331-01-013-5828
FSC Code: 5331
MPN: 902277125

5331-00-818-2816 (902-2-907-70)

NIIN: 00-818-2816
In stock
NSN: 5331-00-818-2816
FSC Code: 5331
MPN: 902290770

5331-01-133-9307 (902-27-192)

NIIN: 01-133-9307
In stock
NSN: 5331-01-133-9307
FSC Code: 5331
MPN: 90227192

5331-01-161-2402 (902277-31)

NIIN: 01-161-2402
In stock
NSN: 5331-01-161-2402
FSC Code: 5331
MPN: 90227731

5331-00-457-2764 (902280-17)

NIIN: 00-457-2764
In stock
NSN: 5331-00-457-2764
FSC Code: 5331
MPN: 90228017

5331-00-070-1922 (902277-16)

NIIN: 00-070-1922
In stock
NSN: 5331-00-070-1922
FSC Code: 5331
MPN: 90227716

5331-01-033-5159 (902-27)

NIIN: 01-033-5159
In stock
NSN: 5331-01-033-5159
FSC Code: 5331
MPN: 90227

5331-00-726-8802 (902-21)

NIIN: 00-726-8802
In stock
NSN: 5331-00-726-8802
FSC Code: 5331
MPN: 90221

5331-01-098-5985 (902-21)

NIIN: 01-098-5985
In stock
NSN: 5331-01-098-5985
FSC Code: 5331
MPN: 90221

5331-01-485-3508 (477059-0)

NIIN: 01-485-3508
In stock
NSN: 5331-01-485-3508
FSC Code: 5331
MPN: 4770590

5331-01-053-9826 (902-18-192)

NIIN: 01-053-9826
In stock
NSN: 5331-01-053-9826
FSC Code: 5331
MPN: 90218192

5331-01-171-1307 (902-19)

NIIN: 01-171-1307
In stock
NSN: 5331-01-171-1307
FSC Code: 5331
MPN: 90219

5331-00-819-2338 (902-15-8306)

NIIN: 00-819-2338
In stock
NSN: 5331-00-819-2338
FSC Code: 5331
MPN: 902158306

5331-01-121-5366 (902-14-192)

NIIN: 01-121-5366
In stock
NSN: 5331-01-121-5366
FSC Code: 5331
MPN: 90214192

5331-01-133-9306 (902-14-146)

NIIN: 01-133-9306
In stock
NSN: 5331-01-133-9306
FSC Code: 5331
MPN: 90214146

5331-00-727-1292 (902-1-2)

NIIN: 00-727-1292
In stock
NSN: 5331-00-727-1292
FSC Code: 5331
MPN: 90212

5331-00-586-6172 (902-14-123)

NIIN: 00-586-6172
In stock
NSN: 5331-00-586-6172
FSC Code: 5331
MPN: 90214123