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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.

5331-01-350-6010 (4400571-0090)

NIIN: 01-350-6010
In stock
NSN: 5331-01-350-6010
FSC Code: 5331
MPN: 44005710090

5331-00-994-8917 (8668-345X3PC8)

NIIN: 00-994-8917
In stock
NSN: 5331-00-994-8917
FSC Code: 5331
MPN: 8668345X3PC8

5331-01-453-1286 (4400483-0070)

NIIN: 01-453-1286
In stock
NSN: 5331-01-453-1286
FSC Code: 5331
MPN: 44004830070

5331-01-486-7856 (4400173-1270)

NIIN: 01-486-7856
In stock
NSN: 5331-01-486-7856
FSC Code: 5331
MPN: 44001731270

5331-01-468-7756 (4400181-0080)

NIIN: 01-468-7756
In stock
NSN: 5331-01-468-7756
FSC Code: 5331
MPN: 44001810080

5331-01-462-6260 (4400181-1200)

NIIN: 01-462-6260
In stock
NSN: 5331-01-462-6260
FSC Code: 5331
MPN: 44001811200

5331-01-486-7937 (4400173-1210)

NIIN: 01-486-7937
In stock
NSN: 5331-01-486-7937
FSC Code: 5331
MPN: 44001731210

5331-01-431-9428 (44.2X5.7)

NIIN: 01-431-9428
In stock
NSN: 5331-01-431-9428
FSC Code: 5331
MPN: 442X57

5331-01-431-9392 (44.2X3.0)

NIIN: 01-431-9392
In stock
NSN: 5331-01-431-9392
FSC Code: 5331
MPN: 442X30

5331-14-306-3471 (R04400X300AD016)

NIIN: 14-306-3471
In stock
NSN: 5331-14-306-3471
FSC Code: 5331
MPN: R04400X300AD016

5331-01-432-9303 (44.2X3)

NIIN: 01-432-9303
In stock
NSN: 5331-01-432-9303
FSC Code: 5331
MPN: 442X3

5331-01-462-9174 (43990-0066)

NIIN: 01-462-9174
In stock
NSN: 5331-01-462-9174
FSC Code: 5331
MPN: 439900066

5331-01-477-2834 (4398597-R-77)

NIIN: 01-477-2834
In stock
NSN: 5331-01-477-2834
FSC Code: 5331
MPN: 4398597R77

5331-01-436-2564 (4397B26H05)

NIIN: 01-436-2564
In stock
NSN: 5331-01-436-2564
FSC Code: 5331
MPN: 4397B26H05

5331-01-436-2560 (4397B26H04)

NIIN: 01-436-2560
In stock
NSN: 5331-01-436-2560
FSC Code: 5331
MPN: 4397B26H04

5331-01-439-8821 (4397059-016)

NIIN: 01-439-8821
In stock
NSN: 5331-01-439-8821
FSC Code: 5331
MPN: 4397059016

5331-01-269-7281 (86-489)

NIIN: 01-269-7281
In stock
NSN: 5331-01-269-7281
FSC Code: 5331
MPN: 86489

5331-01-346-3492 (4393B56)

NIIN: 01-346-3492
In stock
NSN: 5331-01-346-3492
FSC Code: 5331
MPN: 4393B56

5331-01-346-3491 (4393B60)

NIIN: 01-346-3491
In stock
NSN: 5331-01-346-3491
FSC Code: 5331
MPN: 4393B60

5331-01-346-3490 (4393B47)

NIIN: 01-346-3490
In stock
NSN: 5331-01-346-3490
FSC Code: 5331
MPN: 4393B47

5331-01-161-2424 (864-120)

NIIN: 01-161-2424
In stock
NSN: 5331-01-161-2424
FSC Code: 5331
MPN: 864120

5331-01-277-8804 (8632B)

NIIN: 01-277-8804
In stock
NSN: 5331-01-277-8804
FSC Code: 5331
MPN: 8632B

5331-01-124-2689 (8630B)

NIIN: 01-124-2689
In stock
NSN: 5331-01-124-2689
FSC Code: 5331
MPN: 8630B

5331-01-373-6907 (902-08492-000)

NIIN: 01-373-6907
In stock
NSN: 5331-01-373-6907
FSC Code: 5331
MPN: 90208492000

5331-00-066-5005 (8626503-4)

NIIN: 00-066-5005
In stock
NSN: 5331-00-066-5005
FSC Code: 5331
MPN: 86265034

5331-00-069-3338 (8626503-3)

NIIN: 00-069-3338
In stock
NSN: 5331-00-069-3338
FSC Code: 5331
MPN: 86265033

5331-00-069-3340 (8626503-6)

NIIN: 00-069-3340
In stock
NSN: 5331-00-069-3340
FSC Code: 5331
MPN: 86265036

5331-00-069-3339 (8626503-5)

NIIN: 00-069-3339
In stock
NSN: 5331-00-069-3339
FSC Code: 5331
MPN: 86265035

5331-00-948-9725 (8626503-1)

NIIN: 00-948-9725
In stock
NSN: 5331-00-948-9725
FSC Code: 5331
MPN: 86265031

5331-00-088-8066 (8626503-2)

NIIN: 00-088-8066
In stock
NSN: 5331-00-088-8066
FSC Code: 5331
MPN: 86265032

5331-01-568-1128 (4379RD537280)

NIIN: 01-568-1128
In stock
NSN: 5331-01-568-1128
FSC Code: 5331
MPN: 4379RD537280

5331-00-180-9785 (8624876-1)

NIIN: 00-180-9785
In stock
NSN: 5331-00-180-9785
FSC Code: 5331
MPN: 86248761

5331-00-930-6769 (8624710-8)

NIIN: 00-930-6769
In stock
NSN: 5331-00-930-6769
FSC Code: 5331
MPN: 86247108

5331-00-912-2661 (8624710-7)

NIIN: 00-912-2661
In stock
NSN: 5331-00-912-2661
FSC Code: 5331
MPN: 86247107

5331-00-912-2657 (8624711-2)

NIIN: 00-912-2657
In stock
NSN: 5331-00-912-2657
FSC Code: 5331
MPN: 86247112

5331-00-905-9871 (8624711-1)

NIIN: 00-905-9871
In stock
NSN: 5331-00-905-9871
FSC Code: 5331
MPN: 86247111

5331-00-912-2658 (8624710-6)

NIIN: 00-912-2658
In stock
NSN: 5331-00-912-2658
FSC Code: 5331
MPN: 86247106

5331-00-912-2659 (8624710-5)

NIIN: 00-912-2659
In stock
NSN: 5331-00-912-2659
FSC Code: 5331
MPN: 86247105

5331-00-912-2662 (8624710-3)

NIIN: 00-912-2662
In stock
NSN: 5331-00-912-2662
FSC Code: 5331
MPN: 86247103

5331-00-912-2664 (8624710-2)

NIIN: 00-912-2664
In stock
NSN: 5331-00-912-2664
FSC Code: 5331
MPN: 86247102

5331-00-912-2656 (8624710-1)

NIIN: 00-912-2656
In stock
NSN: 5331-00-912-2656
FSC Code: 5331
MPN: 86247101

5331-00-111-6737 (8623877-5)

NIIN: 00-111-6737
In stock
NSN: 5331-00-111-6737
FSC Code: 5331
MPN: 86238775

5331-12-314-3484 (700429090000)

NIIN: 12-314-3484
In stock
NSN: 5331-12-314-3484
FSC Code: 5331
MPN: 700429090000

5331-12-332-4593 (005001 700429005001)

NIIN: 12-332-4593
In stock
NSN: 5331-12-332-4593
FSC Code: 5331
MPN: 005001700429005001

5331-01-145-0702 (86-218-05-006)

NIIN: 01-145-0702
In stock
NSN: 5331-01-145-0702
FSC Code: 5331
MPN: 8621805006

5331-01-423-7144 (AE22103-026)

NIIN: 01-423-7144
In stock
NSN: 5331-01-423-7144
FSC Code: 5331
MPN: AE22103026

5331-00-250-2111 (861320-7)

NIIN: 00-250-2111
In stock
NSN: 5331-00-250-2111
FSC Code: 5331
MPN: 8613207

5331-01-259-9307 (861131-036)

NIIN: 01-259-9307
In stock
NSN: 5331-01-259-9307
FSC Code: 5331
MPN: 861131036