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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.

5331-01-228-6166 (T-9K-7)

NIIN: 01-228-6166
In stock
NSN: 5331-01-228-6166
FSC Code: 5331
MPN: T9K7

5331-01-084-1082 (T-9A-44-1)

NIIN: 01-084-1082
In stock
NSN: 5331-01-084-1082
FSC Code: 5331
MPN: T9A441

5331-01-084-1850 (T-9B-44)

NIIN: 01-084-1850
In stock
NSN: 5331-01-084-1850
FSC Code: 5331
MPN: T9B44

5331-01-128-4449 (T-9B-43-1)

NIIN: 01-128-4449
In stock
NSN: 5331-01-128-4449
FSC Code: 5331
MPN: T9B431

5331-01-211-7349 (T-9-67)

NIIN: 01-211-7349
In stock
NSN: 5331-01-211-7349
FSC Code: 5331
MPN: T967

5331-01-180-4613 (T-98-12W)

NIIN: 01-180-4613
In stock
NSN: 5331-01-180-4613
FSC Code: 5331
MPN: T9812W

5331-01-427-9787 (N48855-94)

NIIN: 01-427-9787
In stock
NSN: 5331-01-427-9787
FSC Code: 5331
MPN: N4885594

5331-01-546-2299 (E-347PC29)

NIIN: 01-546-2299
In stock
NSN: 5331-01-546-2299
FSC Code: 5331
MPN: E347PC29

5331-01-104-4699 (T9-0008)

NIIN: 01-104-4699
In stock
NSN: 5331-01-104-4699
FSC Code: 5331
MPN: T90008

5331-01-374-2741 (E322-2066-J)

NIIN: 01-374-2741
In stock
NSN: 5331-01-374-2741
FSC Code: 5331
MPN: E3222066J

5331-01-303-6280 (T-85127-0-11)

NIIN: 01-303-6280
In stock
NSN: 5331-01-303-6280
FSC Code: 5331
MPN: T85127011

5331-01-310-8448 (T77858)

NIIN: 01-310-8448
In stock
NSN: 5331-01-310-8448
FSC Code: 5331
MPN: T77858

5331-01-310-8449 (T77613)

NIIN: 01-310-8449
In stock
NSN: 5331-01-310-8449
FSC Code: 5331
MPN: T77613

5331-01-289-9130 (T76938)

NIIN: 01-289-9130
In stock
NSN: 5331-01-289-9130
FSC Code: 5331
MPN: T76938

5331-01-312-4820 (T71981)

NIIN: 01-312-4820
In stock
NSN: 5331-01-312-4820
FSC Code: 5331
MPN: T71981

5331-01-312-7165 (T72571)

NIIN: 01-312-7165
In stock
NSN: 5331-01-312-7165
FSC Code: 5331
MPN: T72571

5331-01-312-7164 (T72573)

NIIN: 01-312-7164
In stock
NSN: 5331-01-312-7164
FSC Code: 5331
MPN: T72573

5331-01-255-3561 (T68412)

NIIN: 01-255-3561
In stock
NSN: 5331-01-255-3561
FSC Code: 5331
MPN: T68412

5331-01-332-4077 (T-595-Y)

NIIN: 01-332-4077
In stock
NSN: 5331-01-332-4077
FSC Code: 5331
MPN: T595Y

5331-01-291-6539 (T-590-Y-BR-20-1)

NIIN: 01-291-6539
In stock
NSN: 5331-01-291-6539
FSC Code: 5331
MPN: T590YBR201

5331-01-332-4078 (T-595-Y)

NIIN: 01-332-4078
In stock
NSN: 5331-01-332-4078
FSC Code: 5331
MPN: T595Y

5331-01-111-9281 (T59816)

NIIN: 01-111-9281
In stock
NSN: 5331-01-111-9281
FSC Code: 5331
MPN: T59816

5331-01-031-4865 (T590YPC13SIZE1-1/2IN)

NIIN: 01-031-4865
In stock
NSN: 5331-01-031-4865
FSC Code: 5331
MPN: T590YPC13SIZE112IN

5331-01-097-8847 (T59932)

NIIN: 01-097-8847
In stock
NSN: 5331-01-097-8847
FSC Code: 5331
MPN: T59932

5331-01-313-0245 (T56186)

NIIN: 01-313-0245
In stock
NSN: 5331-01-313-0245
FSC Code: 5331
MPN: T56186

5331-01-178-1751 (T-4J-P4)

NIIN: 01-178-1751
In stock
NSN: 5331-01-178-1751
FSC Code: 5331
MPN: T4JP4

5331-01-255-1054 (T-4JB-K1)

NIIN: 01-255-1054
In stock
NSN: 5331-01-255-1054
FSC Code: 5331
MPN: T4JBK1

5331-01-331-9977 (T45902)

NIIN: 01-331-9977
In stock
NSN: 5331-01-331-9977
FSC Code: 5331
MPN: T45902

5331-01-331-9976 (T45900)

NIIN: 01-331-9976
In stock
NSN: 5331-01-331-9976
FSC Code: 5331
MPN: T45900

5331-01-076-2980 (T42215)

NIIN: 01-076-2980
In stock
NSN: 5331-01-076-2980
FSC Code: 5331
MPN: T42215

5331-01-076-2979 (T39429)

NIIN: 01-076-2979
In stock
NSN: 5331-01-076-2979
FSC Code: 5331
MPN: T39429

5331-01-151-7293 (T37381)

NIIN: 01-151-7293
In stock
NSN: 5331-01-151-7293
FSC Code: 5331
MPN: T37381

5331-01-313-4952 (T34248)

NIIN: 01-313-4952
In stock
NSN: 5331-01-313-4952
FSC Code: 5331
MPN: T34248

5331-01-111-2650 (T32344)

NIIN: 01-111-2650
In stock
NSN: 5331-01-111-2650
FSC Code: 5331
MPN: T32344

5331-01-352-6364 (E163.05201-224)

NIIN: 01-352-6364
In stock
NSN: 5331-01-352-6364
FSC Code: 5331
MPN: E16305201224

5331-01-371-3287 (E1567A/20)

NIIN: 01-371-3287
In stock
NSN: 5331-01-371-3287
FSC Code: 5331
MPN: E1567A20

5331-01-330-9596 (T29789)

NIIN: 01-330-9596
In stock
NSN: 5331-01-330-9596
FSC Code: 5331
MPN: T29789

5331-01-277-4198 (T28070)

NIIN: 01-277-4198
In stock
NSN: 5331-01-277-4198
FSC Code: 5331
MPN: T28070

5331-01-477-2662 (E130000710-907)

NIIN: 01-477-2662
In stock
NSN: 5331-01-477-2662
FSC Code: 5331
MPN: E130000710907

5331-01-476-8183 (E130000701-907)

NIIN: 01-476-8183
In stock
NSN: 5331-01-476-8183
FSC Code: 5331
MPN: E130000701907

5331-01-391-3436 (NAS1611-016A)

NIIN: 01-391-3436
In stock
NSN: 5331-01-391-3436
FSC Code: 5331
MPN: NAS1611016A

5331-01-545-6986 (E1267-2-030)

NIIN: 01-545-6986
In stock
NSN: 5331-01-545-6986
FSC Code: 5331
MPN: E12672030

5331-01-472-2925 (E-126042)

NIIN: 01-472-2925
In stock
NSN: 5331-01-472-2925
FSC Code: 5331
MPN: E126042

5331-01-313-0246 (T22828)

NIIN: 01-313-0246
In stock
NSN: 5331-01-313-0246
FSC Code: 5331
MPN: T22828

5331-01-530-7624 (E1000-123)

NIIN: 01-530-7624
In stock
NSN: 5331-01-530-7624
FSC Code: 5331
MPN: E1000123

5331-01-505-3069 (E1000-007)

NIIN: 01-505-3069
In stock
NSN: 5331-01-505-3069
FSC Code: 5331
MPN: E1000007

5331-01-340-8197 (E0UZ7288-A)

NIIN: 01-340-8197
In stock
NSN: 5331-01-340-8197
FSC Code: 5331
MPN: E0UZ7288A

5331-01-568-2596 (E0962-90)

NIIN: 01-568-2596
In stock
NSN: 5331-01-568-2596
FSC Code: 5331
MPN: E096290