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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.

5331-01-609-5863 (59A-004)

NIIN: 01-609-5863
In stock
NSN: 5331-01-609-5863
FSC Code: 5331
MPN: 59A004

5331-01-609-4123 (109205)

NIIN: 01-609-4123
In stock
NSN: 5331-01-609-4123
FSC Code: 5331
MPN: 109205

5331-01-610-3728 (LS1070049)

NIIN: 01-610-3728
In stock
NSN: 5331-01-610-3728
FSC Code: 5331
MPN: LS1070049

5331-01-610-2620 (2918148)

NIIN: 01-610-2620
In stock
NSN: 5331-01-610-2620
FSC Code: 5331
MPN: 2918148

5331-01-610-2639 (3170014)

NIIN: 01-610-2639
In stock
NSN: 5331-01-610-2639
FSC Code: 5331
MPN: 3170014

5331-01-610-0886 (652567068)

NIIN: 01-610-0886
In stock
NSN: 5331-01-610-0886
FSC Code: 5331
MPN: 652567068

5331-01-610-0864 (2ACA12021)

NIIN: 01-610-0864
In stock
NSN: 5331-01-610-0864
FSC Code: 5331
MPN: 2ACA12021

5331-01-610-0598 (8T-4750)

NIIN: 01-610-0598
In stock
NSN: 5331-01-610-0598
FSC Code: 5331
MPN: 8T4750

5331-01-609-5337 (347/22476)

NIIN: 01-609-5337
In stock
NSN: 5331-01-609-5337
FSC Code: 5331
MPN: 34722476

5331-01-609-4601 (137R135)

NIIN: 01-609-4601
In stock
NSN: 5331-01-609-4601
FSC Code: 5331
MPN: 137R135

5331-01-609-7465 (ST1946-226)

NIIN: 01-609-7465
In stock
NSN: 5331-01-609-7465
FSC Code: 5331
MPN: ST1946226

5331-01-609-4551 (137R026)

NIIN: 01-609-4551
In stock
NSN: 5331-01-609-4551
FSC Code: 5331
MPN: 137R026

5331-01-610-3411 (564700)

NIIN: 01-610-3411
In stock
NSN: 5331-01-610-3411
FSC Code: 5331
MPN: 564700

5331-01-610-2067 (M83641-1-276)

NIIN: 01-610-2067
In stock
NSN: 5331-01-610-2067
FSC Code: 5331
MPN: M836411276

5331-01-610-0847 (605000006)

NIIN: 01-610-0847
In stock
NSN: 5331-01-610-0847
FSC Code: 5331
MPN: 605000006

5331-01-610-0303 (1978930)

NIIN: 01-610-0303
In stock
NSN: 5331-01-610-0303
FSC Code: 5331
MPN: 1978930

5331-01-609-9769 (100632701)

NIIN: 01-609-9769
In stock
NSN: 5331-01-609-9769
FSC Code: 5331
MPN: 100632701

5331-01-609-4598 (137R910)

NIIN: 01-609-4598
In stock
NSN: 5331-01-609-4598
FSC Code: 5331
MPN: 137R910

5331-01-609-4600 (137R912)

NIIN: 01-609-4600
In stock
NSN: 5331-01-609-4600
FSC Code: 5331
MPN: 137R912

5331-01-609-4102 (347/22499)

NIIN: 01-609-4102
In stock
NSN: 5331-01-609-4102
FSC Code: 5331
MPN: 34722499

5331-01-610-0285 (10034032)

NIIN: 01-610-0285
In stock
NSN: 5331-01-610-0285
FSC Code: 5331
MPN: 10034032

5331-01-609-7630 (828/00291)

NIIN: 01-609-7630
In stock
NSN: 5331-01-609-7630
FSC Code: 5331
MPN: 82800291

5331-01-609-4573 (137R906)

NIIN: 01-609-4573
In stock
NSN: 5331-01-609-4573
FSC Code: 5331
MPN: 137R906

5331-01-609-3089 (652305363)

NIIN: 01-609-3089
In stock
NSN: 5331-01-609-3089
FSC Code: 5331
MPN: 652305363

5331-01-609-2847 (732072)

NIIN: 01-609-2847
In stock
NSN: 5331-01-609-2847
FSC Code: 5331
MPN: 732072

5331-01-609-2603 (O-4-1-18)

NIIN: 01-609-2603
In stock
NSN: 5331-01-609-2603
FSC Code: 5331
MPN: O4118

5331-01-610-1610 (1811747)

NIIN: 01-610-1610
In stock
NSN: 5331-01-610-1610
FSC Code: 5331
MPN: 1811747

5331-01-610-1282 (4ORIN-011)

NIIN: 01-610-1282
In stock
NSN: 5331-01-610-1282
FSC Code: 5331
MPN: 4ORIN011

5331-01-609-6112 (828/10254)

NIIN: 01-609-6112
In stock
NSN: 5331-01-609-6112
FSC Code: 5331
MPN: 82810254

5331-01-609-5764 (J221P050)

NIIN: 01-609-5764
In stock
NSN: 5331-01-609-5764
FSC Code: 5331
MPN: J221P050

5331-01-609-4543 (0200-001-908)

NIIN: 01-609-4543
In stock
NSN: 5331-01-609-4543
FSC Code: 5331
MPN: 0200001908

5331-01-609-2605 (O-4-1-20)

NIIN: 01-609-2605
In stock
NSN: 5331-01-609-2605
FSC Code: 5331
MPN: O4120

5331-01-609-2568 (O-13-1-2)

NIIN: 01-609-2568
In stock
NSN: 5331-01-609-2568
FSC Code: 5331
MPN: O1312

5331-01-609-2561 (O-12-2-12)

NIIN: 01-609-2561
In stock
NSN: 5331-01-609-2561
FSC Code: 5331
MPN: O12212

5331-01-609-2562 (O-12-2-13)

NIIN: 01-609-2562
In stock
NSN: 5331-01-609-2562
FSC Code: 5331
MPN: O12213

5331-01-610-0276 (15/920138)

NIIN: 01-610-0276
In stock
NSN: 5331-01-610-0276
FSC Code: 5331
MPN: 15920138

5331-01-609-9858 (S205-343)

NIIN: 01-609-9858
In stock
NSN: 5331-01-609-9858
FSC Code: 5331
MPN: S205343

5331-01-609-9534 (655123363)

NIIN: 01-609-9534
In stock
NSN: 5331-01-609-9534
FSC Code: 5331
MPN: 655123363

5331-01-609-6660 (69494J344)

NIIN: 01-609-6660
In stock
NSN: 5331-01-609-6660
FSC Code: 5331
MPN: 69494J344

5331-01-609-2597 (O-10-4-15)

NIIN: 01-609-2597
In stock
NSN: 5331-01-609-2597
FSC Code: 5331
MPN: O10415

5331-01-609-2600 (O-8-2-26)

NIIN: 01-609-2600
In stock
NSN: 5331-01-609-2600
FSC Code: 5331
MPN: O8226

5331-01-609-2543 (O-11-1-18)

NIIN: 01-609-2543
In stock
NSN: 5331-01-609-2543
FSC Code: 5331
MPN: O11118

5331-01-609-0713 (98W77)

NIIN: 01-609-0713
In stock
NSN: 5331-01-609-0713
FSC Code: 5331
MPN: 98W77

5331-01-609-0302 (7-57-161)

NIIN: 01-609-0302
In stock
NSN: 5331-01-609-0302
FSC Code: 5331
MPN: 757161

5331-01-610-0376 (5AEJ.515A)

NIIN: 01-610-0376
In stock
NSN: 5331-01-610-0376
FSC Code: 5331
MPN: 5AEJ515A

5331-01-609-4582 (AS568-439 NEOPRENE-1)

NIIN: 01-609-4582
In stock
NSN: 5331-01-609-4582
FSC Code: 5331
MPN: AS568439NEOPRENE1

5331-01-609-3085 (2ALA12025)

NIIN: 01-609-3085
In stock
NSN: 5331-01-609-3085
FSC Code: 5331
MPN: 2ALA12025

5331-01-609-2574 (O-8-3-29)

NIIN: 01-609-2574
In stock
NSN: 5331-01-609-2574
FSC Code: 5331
MPN: O8329