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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.

5331-01-509-7511 (MA3352A0224)

NIIN: 01-509-7511
In stock
NSN: 5331-01-509-7511
FSC Code: 5331
MPN: MA3352A0224

5331-01-533-7871 (MA3352A0118)

NIIN: 01-533-7871
In stock
NSN: 5331-01-533-7871
FSC Code: 5331
MPN: MA3352A0118

5331-01-499-3524 (MA3352A0106)

NIIN: 01-499-3524
In stock
NSN: 5331-01-499-3524
FSC Code: 5331
MPN: MA3352A0106

5331-01-506-5352 (MA3352A0112)

NIIN: 01-506-5352
In stock
NSN: 5331-01-506-5352
FSC Code: 5331
MPN: MA3352A0112

5331-01-509-7499 (MA3352A0075)

NIIN: 01-509-7499
In stock
NSN: 5331-01-509-7499
FSC Code: 5331
MPN: MA3352A0075

5331-01-506-5353 (MA3352A0090)

NIIN: 01-506-5353
In stock
NSN: 5331-01-506-5353
FSC Code: 5331
MPN: MA3352A0090

5331-01-509-7495 (MA3352A0125)

NIIN: 01-509-7495
In stock
NSN: 5331-01-509-7495
FSC Code: 5331
MPN: MA3352A0125

5331-01-509-7507 (MA3342B0335)

NIIN: 01-509-7507
In stock
NSN: 5331-01-509-7507
FSC Code: 5331
MPN: MA3342B0335

5331-01-509-7508 (MA3352A0056)

NIIN: 01-509-7508
In stock
NSN: 5331-01-509-7508
FSC Code: 5331
MPN: MA3352A0056

5331-01-533-7869 (MA3352A0100)

NIIN: 01-533-7869
In stock
NSN: 5331-01-533-7869
FSC Code: 5331
MPN: MA3352A0100

5331-01-506-5356 (MA3352A0045)

NIIN: 01-506-5356
In stock
NSN: 5331-01-506-5356
FSC Code: 5331
MPN: MA3352A0045

5331-01-506-5357 (MA3352A0051)

NIIN: 01-506-5357
In stock
NSN: 5331-01-506-5357
FSC Code: 5331
MPN: MA3352A0051

5331-01-495-5771 (MA-1061-C)

NIIN: 01-495-5771
In stock
NSN: 5331-01-495-5771
FSC Code: 5331
MPN: MA1061C

5331-01-342-5711 (MIL-P-87175/2)

NIIN: 01-342-5711
In stock
NSN: 5331-01-342-5711
FSC Code: 5331
MPN: MILP871752

5331-01-342-7297 (MIL-P-87175/2)

NIIN: 01-342-7297
In stock
NSN: 5331-01-342-7297
FSC Code: 5331
MPN: MILP871752

5331-01-342-5709 (MIL-P-87175/2)

NIIN: 01-342-5709
In stock
NSN: 5331-01-342-5709
FSC Code: 5331
MPN: MILP871752

5331-01-342-7299 (MIL-P-87175/2)

NIIN: 01-342-7299
In stock
NSN: 5331-01-342-7299
FSC Code: 5331
MPN: MILP871752

5331-01-342-5713 (MIL-P-87175/2)

NIIN: 01-342-5713
In stock
NSN: 5331-01-342-5713
FSC Code: 5331
MPN: MILP871752

5331-01-343-1776 (MIL-P-87175/2)

NIIN: 01-343-1776
In stock
NSN: 5331-01-343-1776
FSC Code: 5331
MPN: MILP871752

5331-01-342-7295 (MIL-P-87175/2)

NIIN: 01-342-7295
In stock
NSN: 5331-01-342-7295
FSC Code: 5331
MPN: MILP871752

5331-01-342-7298 (MIL-P-87175/2)

NIIN: 01-342-7298
In stock
NSN: 5331-01-342-7298
FSC Code: 5331
MPN: MILP871752

5331-01-527-4909 (M87175/1-005)

NIIN: 01-527-4909
In stock
NSN: 5331-01-527-4909
FSC Code: 5331
MPN: M871751005

5331-01-527-4929 (M87175/1-003)

NIIN: 01-527-4929
In stock
NSN: 5331-01-527-4929
FSC Code: 5331
MPN: M871751003

5331-01-568-1955 (MIL-DTL-83528/5)

NIIN: 01-568-1955
In stock
NSN: 5331-01-568-1955
FSC Code: 5331
MPN: MILDTL835285

5331-01-367-0798 (M83485/1-459)

NIIN: 01-367-0798
In stock
NSN: 5331-01-367-0798
FSC Code: 5331
MPN: M834851459

5331-01-480-3701 (M83485/1-249)

NIIN: 01-480-3701
In stock
NSN: 5331-01-480-3701
FSC Code: 5331
MPN: M834851249

5331-01-504-6419 (M-83485/1-471)

NIIN: 01-504-6419
In stock
NSN: 5331-01-504-6419
FSC Code: 5331
MPN: M834851471

5331-01-477-7363 (M83485/1-910)

NIIN: 01-477-7363
In stock
NSN: 5331-01-477-7363
FSC Code: 5331
MPN: M834851910

5331-01-412-4831 (M83485/1-912)

NIIN: 01-412-4831
In stock
NSN: 5331-01-412-4831
FSC Code: 5331
MPN: M834851912

5331-01-480-1804 (M83485/1-333)

NIIN: 01-480-1804
In stock
NSN: 5331-01-480-1804
FSC Code: 5331
MPN: M834851333

5331-01-485-6422 (M83485/1-235)

NIIN: 01-485-6422
In stock
NSN: 5331-01-485-6422
FSC Code: 5331
MPN: M834851235

5331-01-485-6450 (M83485/1-245)

NIIN: 01-485-6450
In stock
NSN: 5331-01-485-6450
FSC Code: 5331
MPN: M834851245

5331-01-485-6442 (M83485/1-238)

NIIN: 01-485-6442
In stock
NSN: 5331-01-485-6442
FSC Code: 5331
MPN: M834851238

5331-01-509-5453 (M83485/1-345)

NIIN: 01-509-5453
In stock
NSN: 5331-01-509-5453
FSC Code: 5331
MPN: M834851345

5331-01-485-6407 (M83485/1-050)

NIIN: 01-485-6407
In stock
NSN: 5331-01-485-6407
FSC Code: 5331
MPN: M834851050

5331-01-477-7385 (M83485/1-234)

NIIN: 01-477-7385
In stock
NSN: 5331-01-477-7385
FSC Code: 5331
MPN: M834851234

5331-01-509-5445 (M83485/1-159)

NIIN: 01-509-5445
In stock
NSN: 5331-01-509-5445
FSC Code: 5331
MPN: M834851159

5331-01-525-8462 (M83485/1-236)

NIIN: 01-525-8462
In stock
NSN: 5331-01-525-8462
FSC Code: 5331
MPN: M834851236

5331-01-485-6397 (M83485/1-160)

NIIN: 01-485-6397
In stock
NSN: 5331-01-485-6397
FSC Code: 5331
MPN: M834851160

5331-01-485-6414 (M83485/1-136)

NIIN: 01-485-6414
In stock
NSN: 5331-01-485-6414
FSC Code: 5331
MPN: M834851136

5331-01-485-6463 (M83485/1-242)

NIIN: 01-485-6463
In stock
NSN: 5331-01-485-6463
FSC Code: 5331
MPN: M834851242

5331-01-485-6456 (M83485/1-168)

NIIN: 01-485-6456
In stock
NSN: 5331-01-485-6456
FSC Code: 5331
MPN: M834851168

5331-01-480-1800 (M83485/1-211)

NIIN: 01-480-1800
In stock
NSN: 5331-01-480-1800
FSC Code: 5331
MPN: M834851211

5331-01-457-5110 (MIL-R-83485/1)

NIIN: 01-457-5110
In stock
NSN: 5331-01-457-5110
FSC Code: 5331
MPN: MILR834851

5331-01-545-9936 (M83485/1-158)

NIIN: 01-545-9936
In stock
NSN: 5331-01-545-9936
FSC Code: 5331
MPN: M834851158

5331-01-564-6479 (M83485/1-126)

NIIN: 01-564-6479
In stock
NSN: 5331-01-564-6479
FSC Code: 5331
MPN: M834851126

5331-01-485-6400 (M83485/1-161)

NIIN: 01-485-6400
In stock
NSN: 5331-01-485-6400
FSC Code: 5331
MPN: M834851161

5331-01-485-6458 (M83485/1-205)

NIIN: 01-485-6458
In stock
NSN: 5331-01-485-6458
FSC Code: 5331
MPN: M834851205