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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.

5331-01-379-1066 (9004104-0340)

NIIN: 01-379-1066
In stock
NSN: 5331-01-379-1066
FSC Code: 5331
MPN: 90041040340

5331-01-370-5719 (9004104-0140)

NIIN: 01-370-5719
In stock
NSN: 5331-01-370-5719
FSC Code: 5331
MPN: 90041040140

5331-01-379-8669 (9004104-1650)

NIIN: 01-379-8669
In stock
NSN: 5331-01-379-8669
FSC Code: 5331
MPN: 90041041650

5331-01-452-7649 (9004104-1490)

NIIN: 01-452-7649
In stock
NSN: 5331-01-452-7649
FSC Code: 5331
MPN: 90041041490

5331-01-378-7178 (9004104-1540)

NIIN: 01-378-7178
In stock
NSN: 5331-01-378-7178
FSC Code: 5331
MPN: 90041041540

5331-01-345-4570 (9004101-2240)

NIIN: 01-345-4570
In stock
NSN: 5331-01-345-4570
FSC Code: 5331
MPN: 90041012240

5331-01-351-1223 (9004100-2300)

NIIN: 01-351-1223
In stock
NSN: 5331-01-351-1223
FSC Code: 5331
MPN: 90041002300

5331-01-387-2168 (9004101-1530)

NIIN: 01-387-2168
In stock
NSN: 5331-01-387-2168
FSC Code: 5331
MPN: 90041011530

5331-01-370-5720 (9004104-0240)

NIIN: 01-370-5720
In stock
NSN: 5331-01-370-5720
FSC Code: 5331
MPN: 90041040240

5331-01-345-4568 (9004101-1160)

NIIN: 01-345-4568
In stock
NSN: 5331-01-345-4568
FSC Code: 5331
MPN: 90041011160

5331-01-370-5718 (9004104-0120)

NIIN: 01-370-5718
In stock
NSN: 5331-01-370-5718
FSC Code: 5331
MPN: 90041040120

5331-01-345-4571 (9004101-2380)

NIIN: 01-345-4571
In stock
NSN: 5331-01-345-4571
FSC Code: 5331
MPN: 90041012380

5331-01-380-0164 (9004100-1430)

NIIN: 01-380-0164
In stock
NSN: 5331-01-380-0164
FSC Code: 5331
MPN: 90041001430

5331-01-380-5204 (9004101-0250)

NIIN: 01-380-5204
In stock
NSN: 5331-01-380-5204
FSC Code: 5331
MPN: 90041010250

5331-01-524-5803 (9004100-1270)

NIIN: 01-524-5803
In stock
NSN: 5331-01-524-5803
FSC Code: 5331
MPN: 90041001270

5331-01-380-9088 (9004100-0220)

NIIN: 01-380-9088
In stock
NSN: 5331-01-380-9088
FSC Code: 5331
MPN: 90041000220

5331-01-380-5167 (9004100-2240)

NIIN: 01-380-5167
In stock
NSN: 5331-01-380-5167
FSC Code: 5331
MPN: 90041002240

5331-01-345-4573 (9004101-0170)

NIIN: 01-345-4573
In stock
NSN: 5331-01-345-4573
FSC Code: 5331
MPN: 90041010170

5331-01-452-7659 (9004100-0130)

NIIN: 01-452-7659
In stock
NSN: 5331-01-452-7659
FSC Code: 5331
MPN: 90041000130

5331-01-345-4574 (9004100-1310)

NIIN: 01-345-4574
In stock
NSN: 5331-01-345-4574
FSC Code: 5331
MPN: 90041001310

5331-01-452-7655 (BULLETIN9783REF10)

NIIN: 01-452-7655
In stock
NSN: 5331-01-452-7655
FSC Code: 5331
MPN: BULLETIN9783REF10

5331-01-379-8689 (9004100-1410)

NIIN: 01-379-8689
In stock
NSN: 5331-01-379-8689
FSC Code: 5331
MPN: 90041001410

5331-01-380-5160 (9004100-0290)

NIIN: 01-380-5160
In stock
NSN: 5331-01-380-5160
FSC Code: 5331
MPN: 90041000290

5331-01-382-4170 (9004100-0480)

NIIN: 01-382-4170
In stock
NSN: 5331-01-382-4170
FSC Code: 5331
MPN: 90041000480

5331-01-380-5156 (9004100-1210)

NIIN: 01-380-5156
In stock
NSN: 5331-01-380-5156
FSC Code: 5331
MPN: 90041001210

5331-01-370-5717 (9004100-0440)

NIIN: 01-370-5717
In stock
NSN: 5331-01-370-5717
FSC Code: 5331
MPN: 90041000440

5331-01-380-5131 (9004100-0370)

NIIN: 01-380-5131
In stock
NSN: 5331-01-380-5131
FSC Code: 5331
MPN: 90041000370

5331-01-380-7461 (9004100-0120)

NIIN: 01-380-7461
In stock
NSN: 5331-01-380-7461
FSC Code: 5331
MPN: 90041000120

5331-01-381-2232 (9002-114)

NIIN: 01-381-2232
In stock
NSN: 5331-01-381-2232
FSC Code: 5331
MPN: 9002114

5331-01-393-5630 (9002-00491-68)

NIIN: 01-393-5630
In stock
NSN: 5331-01-393-5630
FSC Code: 5331
MPN: 90020049168

5331-01-559-7990 (90-019-372)

NIIN: 01-559-7990
In stock
NSN: 5331-01-559-7990
FSC Code: 5331
MPN: 90019372

5331-01-322-1150 (M83485/1-275)

NIIN: 01-322-1150
In stock
NSN: 5331-01-322-1150
FSC Code: 5331
MPN: M834851275

5331-01-322-8060 (M83485/1-47)

NIIN: 01-322-8060
In stock
NSN: 5331-01-322-8060
FSC Code: 5331
MPN: M83485147

5331-01-466-5598 (9000-S6202-74013PC24)

NIIN: 01-466-5598
In stock
NSN: 5331-01-466-5598
FSC Code: 5331
MPN: 9000S620274013PC24

5331-01-322-8058 (M83485/1-236)

NIIN: 01-322-8058
In stock
NSN: 5331-01-322-8058
FSC Code: 5331
MPN: M834851236

5331-01-322-8057 (M83485/1-241)

NIIN: 01-322-8057
In stock
NSN: 5331-01-322-8057
FSC Code: 5331
MPN: M834851241

5331-01-322-8059 (M83485/1-258)

NIIN: 01-322-8059
In stock
NSN: 5331-01-322-8059
FSC Code: 5331
MPN: M834851258

5331-01-364-9134 (90009A1207-1)

NIIN: 01-364-9134
In stock
NSN: 5331-01-364-9134
FSC Code: 5331
MPN: 90009A12071

5331-01-366-9732 (90-0047)

NIIN: 01-366-9732
In stock
NSN: 5331-01-366-9732
FSC Code: 5331
MPN: 900047

5331-01-334-3655 (M83461/1-134)

NIIN: 01-334-3655
In stock
NSN: 5331-01-334-3655
FSC Code: 5331
MPN: M834611134

5331-01-406-3107 (9000-035)

NIIN: 01-406-3107
In stock
NSN: 5331-01-406-3107
FSC Code: 5331
MPN: 9000035

5331-01-334-3656 (M83461/1-132CP)

NIIN: 01-334-3656
In stock
NSN: 5331-01-334-3656
FSC Code: 5331
MPN: M834611132CP

5331-01-185-8704 (M83461/1-013)

NIIN: 01-185-8704
In stock
NSN: 5331-01-185-8704
FSC Code: 5331
MPN: M834611013

5331-01-366-9733 (90-0021)

NIIN: 01-366-9733
In stock
NSN: 5331-01-366-9733
FSC Code: 5331
MPN: 900021

5331-01-267-8926 (M83461/1-028)

NIIN: 01-267-8926
In stock
NSN: 5331-01-267-8926
FSC Code: 5331
MPN: M834611028

5331-01-185-8703 (M83461/1-028)

NIIN: 01-185-8703
In stock
NSN: 5331-01-185-8703
FSC Code: 5331
MPN: M834611028

5331-01-335-8010 (M83461/1-008CP)

NIIN: 01-335-8010
In stock
NSN: 5331-01-335-8010
FSC Code: 5331
MPN: M834611008CP

5331-01-334-7946 (M83461/1-012CP)

NIIN: 01-334-7946
In stock
NSN: 5331-01-334-7946
FSC Code: 5331
MPN: M834611012CP