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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.

5331-01-305-6012 (633B1202)

NIIN: 01-305-6012
In stock
NSN: 5331-01-305-6012
FSC Code: 5331
MPN: 633B1202

5331-01-176-3924 (633-8304)

NIIN: 01-176-3924
In stock
NSN: 5331-01-176-3924
FSC Code: 5331
MPN: 6338304

5331-01-531-1860 (2564-00266)

NIIN: 01-531-1860
In stock
NSN: 5331-01-531-1860
FSC Code: 5331
MPN: 256400266

5331-01-176-3925 (633-8304)

NIIN: 01-176-3925
In stock
NSN: 5331-01-176-3925
FSC Code: 5331
MPN: 6338304

5331-01-538-8573 (2564-00113)

NIIN: 01-538-8573
In stock
NSN: 5331-01-538-8573
FSC Code: 5331
MPN: 256400113

5331-00-472-3186 (633-8242-18)

NIIN: 00-472-3186
In stock
NSN: 5331-00-472-3186
FSC Code: 5331
MPN: 633824218

5331-01-160-2508 (633-7942-16)

NIIN: 01-160-2508
In stock
NSN: 5331-01-160-2508
FSC Code: 5331
MPN: 633794216

5331-01-539-2413 (25-62705001)

NIIN: 01-539-2413
In stock
NSN: 5331-01-539-2413
FSC Code: 5331
MPN: 2562705001

5331-01-501-6319 (25-62702)

NIIN: 01-501-6319
In stock
NSN: 5331-01-501-6319
FSC Code: 5331
MPN: 2562702

5331-01-501-6337 (25-62705)

NIIN: 01-501-6337
In stock
NSN: 5331-01-501-6337
FSC Code: 5331
MPN: 2562705

5331-01-112-7763 (63355PC11)

NIIN: 01-112-7763
In stock
NSN: 5331-01-112-7763
FSC Code: 5331
MPN: 63355PC11

5331-01-561-2815 (25-584)

NIIN: 01-561-2815
In stock
NSN: 5331-01-561-2815
FSC Code: 5331
MPN: 25584

5331-01-114-5074 (6329098PC)

NIIN: 01-114-5074
In stock
NSN: 5331-01-114-5074
FSC Code: 5331
MPN: 6329098PC

5331-01-462-7785 (25-54029)

NIIN: 01-462-7785
In stock
NSN: 5331-01-462-7785
FSC Code: 5331
MPN: 2554029

5331-01-572-7942 (25-54030)

NIIN: 01-572-7942
In stock
NSN: 5331-01-572-7942
FSC Code: 5331
MPN: 2554030

5331-01-286-1670 (6325C)

NIIN: 01-286-1670
In stock
NSN: 5331-01-286-1670
FSC Code: 5331
MPN: 6325C

5331-01-183-4928 (63224A)

NIIN: 01-183-4928
In stock
NSN: 5331-01-183-4928
FSC Code: 5331
MPN: 63224A

5331-01-552-5800 (2551-2002)

NIIN: 01-552-5800
In stock
NSN: 5331-01-552-5800
FSC Code: 5331
MPN: 25512002

5331-01-545-7789 (G547-0002-6397304-27D0)

NIIN: 01-545-7789
In stock
NSN: 5331-01-545-7789
FSC Code: 5331
MPN: G5470002639730427D0

5331-01-552-5801 (2550-1902)

NIIN: 01-552-5801
In stock
NSN: 5331-01-552-5801
FSC Code: 5331
MPN: 25501902

5331-01-509-4321 (25-48462)

NIIN: 01-509-4321
In stock
NSN: 5331-01-509-4321
FSC Code: 5331
MPN: 2548462

5331-01-099-7924 (631805C1)

NIIN: 01-099-7924
In stock
NSN: 5331-01-099-7924
FSC Code: 5331
MPN: 631805C1

5331-01-462-7455 (25-48462A2)

NIIN: 01-462-7455
In stock
NSN: 5331-01-462-7455
FSC Code: 5331
MPN: 2548462A2

5331-01-438-3876 (25484-262-0000-000)

NIIN: 01-438-3876
In stock
NSN: 5331-01-438-3876
FSC Code: 5331
MPN: 254842620000000

5331-01-277-8803 (6314B)

NIIN: 01-277-8803
In stock
NSN: 5331-01-277-8803
FSC Code: 5331
MPN: 6314B

5331-01-024-4848 (631351C1)

NIIN: 01-024-4848
In stock
NSN: 5331-01-024-4848
FSC Code: 5331
MPN: 631351C1

5331-01-135-1000 (6311K12P0098)

NIIN: 01-135-1000
In stock
NSN: 5331-01-135-1000
FSC Code: 5331
MPN: 6311K12P0098

5331-01-116-5105 (6311K12P0097)

NIIN: 01-116-5105
In stock
NSN: 5331-01-116-5105
FSC Code: 5331
MPN: 6311K12P0097

5331-01-315-4904 (6310089-002)

NIIN: 01-315-4904
In stock
NSN: 5331-01-315-4904
FSC Code: 5331
MPN: 6310089002

5331-01-317-0493 (6310024-003)

NIIN: 01-317-0493
In stock
NSN: 5331-01-317-0493
FSC Code: 5331
MPN: 6310024003

5331-01-315-4903 (6310089-001)

NIIN: 01-315-4903
In stock
NSN: 5331-01-315-4903
FSC Code: 5331
MPN: 6310089001

5331-01-509-4382 (25-45711)

NIIN: 01-509-4382
In stock
NSN: 5331-01-509-4382
FSC Code: 5331
MPN: 2545711

5331-01-316-1485 (6310024-001)

NIIN: 01-316-1485
In stock
NSN: 5331-01-316-1485
FSC Code: 5331
MPN: 6310024001

5331-01-315-5557 (63100024-004)

NIIN: 01-315-5557
In stock
NSN: 5331-01-315-5557
FSC Code: 5331
MPN: 63100024004

5331-01-315-0180 (6310024-002)

NIIN: 01-315-0180
In stock
NSN: 5331-01-315-0180
FSC Code: 5331
MPN: 6310024002

5331-01-188-0878 (630BPIECE4A)

NIIN: 01-188-0878
In stock
NSN: 5331-01-188-0878
FSC Code: 5331
MPN: 630BPIECE4A

5331-01-462-7456 (25-4571081)

NIIN: 01-462-7456
In stock
NSN: 5331-01-462-7456
FSC Code: 5331
MPN: 254571081

5331-01-140-9965 (630979-3)

NIIN: 01-140-9965
In stock
NSN: 5331-01-140-9965
FSC Code: 5331
MPN: 6309793

5331-00-618-2995 (63077-5330-24-2)

NIIN: 00-618-2995
In stock
NSN: 5331-00-618-2995
FSC Code: 5331
MPN: 630775330242

5331-00-641-0775 (63077-5330-15-6)

NIIN: 00-641-0775
In stock
NSN: 5331-00-641-0775
FSC Code: 5331
MPN: 630775330156

5331-00-291-3361 (63077-5330-15-4)

NIIN: 00-291-3361
In stock
NSN: 5331-00-291-3361
FSC Code: 5331
MPN: 630775330154

5331-00-286-0066 (63077-5330-15-11)

NIIN: 00-286-0066
In stock
NSN: 5331-00-286-0066
FSC Code: 5331
MPN: 6307753301511

5331-00-599-0834 (63077-5330-15-10)

NIIN: 00-599-0834
In stock
NSN: 5331-00-599-0834
FSC Code: 5331
MPN: 6307753301510

5331-01-232-1479 (6305-53)

NIIN: 01-232-1479
In stock
NSN: 5331-01-232-1479
FSC Code: 5331
MPN: 630553

5331-00-486-5076 (6305-11PC69)

NIIN: 00-486-5076
In stock
NSN: 5331-00-486-5076
FSC Code: 5331
MPN: 630511PC69

5331-00-492-2907 (6305-11PC78)

NIIN: 00-492-2907
In stock
NSN: 5331-00-492-2907
FSC Code: 5331
MPN: 630511PC78

5331-00-486-5090 (6305-11)

NIIN: 00-486-5090
In stock
NSN: 5331-00-486-5090
FSC Code: 5331
MPN: 630511

5331-01-565-8155 (25416-84B)

NIIN: 01-565-8155
In stock
NSN: 5331-01-565-8155
FSC Code: 5331
MPN: 2541684B