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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.

5331-01-380-2113 (2-176-E540-90)

NIIN: 01-380-2113
In stock
NSN: 5331-01-380-2113
FSC Code: 5331
MPN: 2176E54090

5331-01-370-5712 (2-17670/NAVY)

NIIN: 01-370-5712
In stock
NSN: 5331-01-370-5712
FSC Code: 5331
MPN: 217670NAVY

5331-01-531-9898 (F9676-000004)

NIIN: 01-531-9898
In stock
NSN: 5331-01-531-9898
FSC Code: 5331
MPN: F9676000004

5331-01-529-0525 (S1224-2-176-70)

NIIN: 01-529-0525
In stock
NSN: 5331-01-529-0525
FSC Code: 5331
MPN: S1224217670

5331-01-483-6424 (217536-8)

NIIN: 01-483-6424
In stock
NSN: 5331-01-483-6424
FSC Code: 5331
MPN: 2175368

5331-01-306-2728 (5B3718)

NIIN: 01-306-2728
In stock
NSN: 5331-01-306-2728
FSC Code: 5331
MPN: 5B3718

5331-01-532-9235 (2173533/0)

NIIN: 01-532-9235
In stock
NSN: 5331-01-532-9235
FSC Code: 5331
MPN: 21735330

5331-01-569-1890 (217-3875)

NIIN: 01-569-1890
In stock
NSN: 5331-01-569-1890
FSC Code: 5331
MPN: 2173875

5331-01-532-9573 (2173705/1)

NIIN: 01-532-9573
In stock
NSN: 5331-01-532-9573
FSC Code: 5331
MPN: 21737051

5331-01-532-9548 (2173636/0)

NIIN: 01-532-9548
In stock
NSN: 5331-01-532-9548
FSC Code: 5331
MPN: 21736360

5331-01-536-5557 (2-172-L1223-60)

NIIN: 01-536-5557
In stock
NSN: 5331-01-536-5557
FSC Code: 5331
MPN: 2172L122360

5331-01-558-3296 (E1267-80)

NIIN: 01-558-3296
In stock
NSN: 5331-01-558-3296
FSC Code: 5331
MPN: E126780

5331-01-497-8721 (3780-T-150)

NIIN: 01-497-8721
In stock
NSN: 5331-01-497-8721
FSC Code: 5331
MPN: 3780T150

5331-01-532-9232 (2172412/1)

NIIN: 01-532-9232
In stock
NSN: 5331-01-532-9232
FSC Code: 5331
MPN: 21724121

5331-01-497-8723 (217218-2)

NIIN: 01-497-8723
In stock
NSN: 5331-01-497-8723
FSC Code: 5331
MPN: 2172182

5331-01-483-7267 (217169-10)

NIIN: 01-483-7267
In stock
NSN: 5331-01-483-7267
FSC Code: 5331
MPN: 21716910

5331-01-377-7515 (2-170N525-60)

NIIN: 01-377-7515
In stock
NSN: 5331-01-377-7515
FSC Code: 5331
MPN: 2170N52560

5331-01-369-8046 (2-170-L1223-60)

NIIN: 01-369-8046
In stock
NSN: 5331-01-369-8046
FSC Code: 5331
MPN: 2170L122360

5331-00-869-1776 (59C22184)

NIIN: 00-869-1776
In stock
NSN: 5331-00-869-1776
FSC Code: 5331
MPN: 59C22184

5331-01-283-1396 (5999D)

NIIN: 01-283-1396
In stock
NSN: 5331-01-283-1396
FSC Code: 5331
MPN: 5999D

5331-01-560-2696 (216C9186P1)

NIIN: 01-560-2696
In stock
NSN: 5331-01-560-2696
FSC Code: 5331
MPN: 216C9186P1

5331-01-406-3763 (2-168L1223-60)

NIIN: 01-406-3763
In stock
NSN: 5331-01-406-3763
FSC Code: 5331
MPN: 2168L122360

5331-01-517-8147 (2-168C873-70)

NIIN: 01-517-8147
In stock
NSN: 5331-01-517-8147
FSC Code: 5331
MPN: 2168C87370

5331-01-533-3743 (216-7015788ITEMF-407)

NIIN: 01-533-3743
In stock
NSN: 5331-01-533-3743
FSC Code: 5331
MPN: 2167015788ITEMF407

5331-01-445-2295 (2-166-N674-70)

NIIN: 01-445-2295
In stock
NSN: 5331-01-445-2295
FSC Code: 5331
MPN: 2166N67470

5331-01-533-3742 (216-6985937ITEMF-723)

NIIN: 01-533-3742
In stock
NSN: 5331-01-533-3742
FSC Code: 5331
MPN: 2166985937ITEMF723

5331-01-533-3678 (216-6985937ITEMF-320)

NIIN: 01-533-3678
In stock
NSN: 5331-01-533-3678
FSC Code: 5331
MPN: 2166985937ITEMF320

5331-01-533-3679 (216-6985937ITEMF-688)

NIIN: 01-533-3679
In stock
NSN: 5331-01-533-3679
FSC Code: 5331
MPN: 2166985937ITEMF688

5331-01-533-6603 (AMS-R-83285GR80/AS568-220)

NIIN: 01-533-6603
In stock
NSN: 5331-01-533-6603
FSC Code: 5331
MPN: AMSR83285GR80AS568220

5331-01-369-3571 (2-165-N507-90)

NIIN: 01-369-3571
In stock
NSN: 5331-01-369-3571
FSC Code: 5331
MPN: 2165N50790

5331-00-542-1850 (598-700-1893079REVAPC48)

NIIN: 00-542-1850
In stock
NSN: 5331-00-542-1850
FSC Code: 5331
MPN: 5987001893079REVAPC48

5331-00-542-1852 (598-700-1893093REVCPC31)

NIIN: 00-542-1852
In stock
NSN: 5331-00-542-1852
FSC Code: 5331
MPN: 5987001893093REVCPC31

5331-01-390-6648 (2-165B1167-80)

NIIN: 01-390-6648
In stock
NSN: 5331-01-390-6648
FSC Code: 5331
MPN: 2165B116780

5331-01-470-6209 (216-5911301PC6)

NIIN: 01-470-6209
In stock
NSN: 5331-01-470-6209
FSC Code: 5331
MPN: 2165911301PC6

5331-01-447-0745 (2-165B0612-70)

NIIN: 01-447-0745
In stock
NSN: 5331-01-447-0745
FSC Code: 5331
MPN: 2165B061270

5331-00-585-0586 (598-515-1893153REVAPC4)

NIIN: 00-585-0586
In stock
NSN: 5331-00-585-0586
FSC Code: 5331
MPN: 5985151893153REVAPC4

5331-01-501-4292 (5331PL0658575)

NIIN: 01-501-4292
In stock
NSN: 5331-01-501-4292
FSC Code: 5331
MPN: 5331PL0658575

5331-01-525-4933 (2-165)

NIIN: 01-525-4933
In stock
NSN: 5331-01-525-4933
FSC Code: 5331
MPN: 2165

5331-01-462-6523 (2-163T)

NIIN: 01-462-6523
In stock
NSN: 5331-01-462-6523
FSC Code: 5331
MPN: 2163T

5331-01-529-6786 (FIND NO. 281 7385926FINDNO281)

NIIN: 01-529-6786
In stock
NSN: 5331-01-529-6786
FSC Code: 5331
MPN: FINDNO2817385926FINDNO281

5331-01-501-4323 (M83485/1-164)

NIIN: 01-501-4323
In stock
NSN: 5331-01-501-4323
FSC Code: 5331
MPN: M834851164

5331-01-226-5950 (5-983E688-70)

NIIN: 01-226-5950
In stock
NSN: 5331-01-226-5950
FSC Code: 5331
MPN: 5983E68870

5331-01-322-9626 (5-983N602-70)

NIIN: 01-322-9626
In stock
NSN: 5331-01-322-9626
FSC Code: 5331
MPN: 5983N60270

5331-01-453-9934 (2-162-L6413)

NIIN: 01-453-9934
In stock
NSN: 5331-01-453-9934
FSC Code: 5331
MPN: 2162L6413

5331-01-390-6646 (2-162B1167-80)

NIIN: 01-390-6646
In stock
NSN: 5331-01-390-6646
FSC Code: 5331
MPN: 2162B116780

5331-00-542-1603 (598-203-1893097REVAPC8)

NIIN: 00-542-1603
In stock
NSN: 5331-00-542-1603
FSC Code: 5331
MPN: 5982031893097REVAPC8

5331-00-542-1601 (598-203-1891802REVBPC41)

NIIN: 00-542-1601
In stock
NSN: 5331-00-542-1601
FSC Code: 5331
MPN: 5982031891802REVBPC41

5331-01-458-5068 (2-161N525-60)

NIIN: 01-458-5068
In stock
NSN: 5331-01-458-5068
FSC Code: 5331
MPN: 2161N52560