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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.

5331-01-372-8228 (902-00-516)

NIIN: 01-372-8228
In stock
NSN: 5331-01-372-8228
FSC Code: 5331
MPN: 90200516

5331-01-376-0688 (902-00-207)

NIIN: 01-376-0688
In stock
NSN: 5331-01-376-0688
FSC Code: 5331
MPN: 90200207

5331-01-376-0555 (902-00-106)

NIIN: 01-376-0555
In stock
NSN: 5331-01-376-0555
FSC Code: 5331
MPN: 90200106

5331-01-503-8943 (901V912-906)

NIIN: 01-503-8943
In stock
NSN: 5331-01-503-8943
FSC Code: 5331
MPN: 901V912906

5331-01-372-8225 (902-00-109)

NIIN: 01-372-8225
In stock
NSN: 5331-01-372-8225
FSC Code: 5331
MPN: 90200109

5331-01-503-8941 (901V912-904)

NIIN: 01-503-8941
In stock
NSN: 5331-01-503-8941
FSC Code: 5331
MPN: 901V912904

5331-01-503-8944 (901V912-908)

NIIN: 01-503-8944
In stock
NSN: 5331-01-503-8944
FSC Code: 5331
MPN: 901V912908

5331-01-503-8950 (901V912-910)

NIIN: 01-503-8950
In stock
NSN: 5331-01-503-8950
FSC Code: 5331
MPN: 901V912910

5331-01-503-8946 (901V912-912)

NIIN: 01-503-8946
In stock
NSN: 5331-01-503-8946
FSC Code: 5331
MPN: 901V912912

5331-01-471-2068 (901B1-987)

NIIN: 01-471-2068
In stock
NSN: 5331-01-471-2068
FSC Code: 5331
MPN: 901B1987

5331-01-482-4005 (901920-02)

NIIN: 01-482-4005
In stock
NSN: 5331-01-482-4005
FSC Code: 5331
MPN: 90192002

5331-01-513-4623 (A901699-00937)

NIIN: 01-513-4623
In stock
NSN: 5331-01-513-4623
FSC Code: 5331
MPN: A90169900937

5331-01-088-5964 (MA236-21055)

NIIN: 01-088-5964
In stock
NSN: 5331-01-088-5964
FSC Code: 5331
MPN: MA23621055

5331-01-343-2651 (90-1600-00400)

NIIN: 01-343-2651
In stock
NSN: 5331-01-343-2651
FSC Code: 5331
MPN: 90160000400

5331-01-343-2652 (90-1600-00400)

NIIN: 01-343-2652
In stock
NSN: 5331-01-343-2652
FSC Code: 5331
MPN: 90160000400

5331-01-391-7848 (90155-153)

NIIN: 01-391-7848
In stock
NSN: 5331-01-391-7848
FSC Code: 5331
MPN: 90155153

5331-00-599-0495 (M9726086REV7PT4)

NIIN: 00-599-0495
In stock
NSN: 5331-00-599-0495
FSC Code: 5331
MPN: M9726086REV7PT4

5331-00-640-9730 (M9726086P7)

NIIN: 00-640-9730
In stock
NSN: 5331-00-640-9730
FSC Code: 5331
MPN: M9726086P7

5331-01-441-5791 (9012-987)

NIIN: 01-441-5791
In stock
NSN: 5331-01-441-5791
FSC Code: 5331
MPN: 9012987

5331-01-512-3720 (A901299-00937)

NIIN: 01-512-3720
In stock
NSN: 5331-01-512-3720
FSC Code: 5331
MPN: A90129900937

5331-01-442-2591 (90121-015)

NIIN: 01-442-2591
In stock
NSN: 5331-01-442-2591
FSC Code: 5331
MPN: 90121015

5331-01-330-2368 (M87175/1-349)

NIIN: 01-330-2368
In stock
NSN: 5331-01-330-2368
FSC Code: 5331
MPN: M871751349

5331-01-325-9964 (M87175/1-243)

NIIN: 01-325-9964
In stock
NSN: 5331-01-325-9964
FSC Code: 5331
MPN: M871751243

5331-01-287-3585 (M87175/1-016)

NIIN: 01-287-3585
In stock
NSN: 5331-01-287-3585
FSC Code: 5331
MPN: M871751016

5331-01-163-1991 (M87175/1-017)

NIIN: 01-163-1991
In stock
NSN: 5331-01-163-1991
FSC Code: 5331
MPN: M871751017

5331-01-163-9324 (M87175/1-018)

NIIN: 01-163-9324
In stock
NSN: 5331-01-163-9324
FSC Code: 5331
MPN: M871751018

5331-01-532-6137 (901-125-621-221)

NIIN: 01-532-6137
In stock
NSN: 5331-01-532-6137
FSC Code: 5331
MPN: 901125621221

5331-22-269-0501 (90102-08-0335)

NIIN: 22-269-0501
In stock
NSN: 5331-22-269-0501
FSC Code: 5331
MPN: 90102080335

5331-22-269-0036 (90101-37-1256)

NIIN: 22-269-0036
In stock
NSN: 5331-22-269-0036
FSC Code: 5331
MPN: 90101371256

5331-01-543-5806 (90-0476)

NIIN: 01-543-5806
In stock
NSN: 5331-01-543-5806
FSC Code: 5331
MPN: 900476

5331-01-361-5330 (90043PN21)

NIIN: 01-361-5330
In stock
NSN: 5331-01-361-5330
FSC Code: 5331
MPN: 90043PN21

5331-01-345-4569 (9004375-0022)

NIIN: 01-345-4569
In stock
NSN: 5331-01-345-4569
FSC Code: 5331
MPN: 90043750022

5331-01-345-4572 (9004375-0024)

NIIN: 01-345-4572
In stock
NSN: 5331-01-345-4572
FSC Code: 5331
MPN: 90043750024

5331-01-437-9107 (9004375-0012)

NIIN: 01-437-9107
In stock
NSN: 5331-01-437-9107
FSC Code: 5331
MPN: 90043750012

5331-01-361-5331 (90043PN22)

NIIN: 01-361-5331
In stock
NSN: 5331-01-361-5331
FSC Code: 5331
MPN: 90043PN22

5331-01-361-5332 (90043PN23)

NIIN: 01-361-5332
In stock
NSN: 5331-01-361-5332
FSC Code: 5331
MPN: 90043PN23

5331-01-437-9106 (9004375-0017)

NIIN: 01-437-9106
In stock
NSN: 5331-01-437-9106
FSC Code: 5331
MPN: 90043750017

5331-01-406-8224 (9004375-0023)

NIIN: 01-406-8224
In stock
NSN: 5331-01-406-8224
FSC Code: 5331
MPN: 90043750023

5331-01-380-7563 (9004201-9000)

NIIN: 01-380-7563
In stock
NSN: 5331-01-380-7563
FSC Code: 5331
MPN: 90042019000

5331-01-370-5715 (9004104-0440)

NIIN: 01-370-5715
In stock
NSN: 5331-01-370-5715
FSC Code: 5331
MPN: 90041040440

5331-01-370-5721 (9004105-0190)

NIIN: 01-370-5721
In stock
NSN: 5331-01-370-5721
FSC Code: 5331
MPN: 90041050190

5331-01-379-1135 (9004104-0350)

NIIN: 01-379-1135
In stock
NSN: 5331-01-379-1135
FSC Code: 5331
MPN: 90041040350

5331-01-348-8332 (9004104-1290)

NIIN: 01-348-8332
In stock
NSN: 5331-01-348-8332
FSC Code: 5331
MPN: 90041041290

5331-01-452-7657 (9004104-1560)

NIIN: 01-452-7657
In stock
NSN: 5331-01-452-7657
FSC Code: 5331
MPN: 90041041560

5331-01-452-7660 (9004104-2450)

NIIN: 01-452-7660
In stock
NSN: 5331-01-452-7660
FSC Code: 5331
MPN: 90041042450

5331-01-370-5716 (9004104-1580)

NIIN: 01-370-5716
In stock
NSN: 5331-01-370-5716
FSC Code: 5331
MPN: 90041041580

5331-01-380-5219 (9004104-2590)

NIIN: 01-380-5219
In stock
NSN: 5331-01-380-5219
FSC Code: 5331
MPN: 90041042590

5331-01-381-2019 (9004104-1510)

NIIN: 01-381-2019
In stock
NSN: 5331-01-381-2019
FSC Code: 5331
MPN: 90041041510