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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.

5331-01-259-4086 (M25988/1-343)

NIIN: 01-259-4086
In stock
NSN: 5331-01-259-4086
FSC Code: 5331
MPN: M259881343

5331-01-007-1620 (M25988/1-346)

NIIN: 01-007-1620
In stock
NSN: 5331-01-007-1620
FSC Code: 5331
MPN: M259881346

5331-00-292-5476 (M25988/1-335)

NIIN: 00-292-5476
In stock
NSN: 5331-00-292-5476
FSC Code: 5331
MPN: M259881335

5331-00-558-1003 (M25988/1-333)

NIIN: 00-558-1003
In stock
NSN: 5331-00-558-1003
FSC Code: 5331
MPN: M259881333

5331-01-181-2360 (M25988/1-336)

NIIN: 01-181-2360
In stock
NSN: 5331-01-181-2360
FSC Code: 5331
MPN: M259881336

5331-01-102-1899 (M25988/1-320)

NIIN: 01-102-1899
In stock
NSN: 5331-01-102-1899
FSC Code: 5331
MPN: M259881320

5331-01-083-6507 (M25988/1-324)

NIIN: 01-083-6507
In stock
NSN: 5331-01-083-6507
FSC Code: 5331
MPN: M259881324

5331-01-089-2577 (M25988/1-275)

NIIN: 01-089-2577
In stock
NSN: 5331-01-089-2577
FSC Code: 5331
MPN: M259881275

5331-01-129-3147 (M25988/1-259)

NIIN: 01-129-3147
In stock
NSN: 5331-01-129-3147
FSC Code: 5331
MPN: M259881259

5331-01-220-2475 (M25988/1-318)

NIIN: 01-220-2475
In stock
NSN: 5331-01-220-2475
FSC Code: 5331
MPN: M259881318

5331-01-007-1615 (M25988/1-270)

NIIN: 01-007-1615
In stock
NSN: 5331-01-007-1615
FSC Code: 5331
MPN: M259881270

5331-01-322-8784 (M25988/1-279)

NIIN: 01-322-8784
In stock
NSN: 5331-01-322-8784
FSC Code: 5331
MPN: M259881279

5331-00-283-4631 (M25988/1-257)

NIIN: 00-283-4631
In stock
NSN: 5331-00-283-4631
FSC Code: 5331
MPN: M259881257

5331-01-007-1612 (M25988/1-263)

NIIN: 01-007-1612
In stock
NSN: 5331-01-007-1612
FSC Code: 5331
MPN: M259881263

5331-00-303-0092 (M25988/1-266)

NIIN: 00-303-0092
In stock
NSN: 5331-00-303-0092
FSC Code: 5331
MPN: M259881266

5331-01-007-1614 (M25988/1-268)

NIIN: 01-007-1614
In stock
NSN: 5331-01-007-1614
FSC Code: 5331
MPN: M259881268

5331-01-007-1613 (M25988/1-267)

NIIN: 01-007-1613
In stock
NSN: 5331-01-007-1613
FSC Code: 5331
MPN: M259881267

5331-01-007-7088 (M25988/1-258)

NIIN: 01-007-7088
In stock
NSN: 5331-01-007-7088
FSC Code: 5331
MPN: M259881258

5331-01-007-1610 (M25988/1-260)

NIIN: 01-007-1610
In stock
NSN: 5331-01-007-1610
FSC Code: 5331
MPN: M259881260

5331-01-007-4905 (M25988/1-255)

NIIN: 01-007-4905
In stock
NSN: 5331-01-007-4905
FSC Code: 5331
MPN: M259881255

5331-01-007-4903 (M25988/1-253)

NIIN: 01-007-4903
In stock
NSN: 5331-01-007-4903
FSC Code: 5331
MPN: M259881253

5331-01-007-4902 (M25988/1-252)

NIIN: 01-007-4902
In stock
NSN: 5331-01-007-4902
FSC Code: 5331
MPN: M259881252

5331-01-007-4904 (M25988/1-254)

NIIN: 01-007-4904
In stock
NSN: 5331-01-007-4904
FSC Code: 5331
MPN: M259881254

5331-00-288-2380 (M25988/1-249)

NIIN: 00-288-2380
In stock
NSN: 5331-00-288-2380
FSC Code: 5331
MPN: M259881249

5331-00-279-4329 (M25988/1-227)

NIIN: 00-279-4329
In stock
NSN: 5331-00-279-4329
FSC Code: 5331
MPN: M259881227

5331-01-189-6351 (M25988/1-246)

NIIN: 01-189-6351
In stock
NSN: 5331-01-189-6351
FSC Code: 5331
MPN: M259881246

5331-01-007-1632 (M25988/1-248)

NIIN: 01-007-1632
In stock
NSN: 5331-01-007-1632
FSC Code: 5331
MPN: M259881248

5331-00-279-9351 (M25988/1-240)

NIIN: 00-279-9351
In stock
NSN: 5331-00-279-9351
FSC Code: 5331
MPN: M259881240

5331-00-326-4360 (M25988/1-223)

NIIN: 00-326-4360
In stock
NSN: 5331-00-326-4360
FSC Code: 5331
MPN: M259881223

5331-01-010-2420 (M25988/1-220)

NIIN: 01-010-2420
In stock
NSN: 5331-01-010-2420
FSC Code: 5331
MPN: M259881220

5331-01-086-1745 (M25988/1-209)

NIIN: 01-086-1745
In stock
NSN: 5331-01-086-1745
FSC Code: 5331
MPN: M259881209

5331-00-917-4502 (M25988/1-220)

NIIN: 00-917-4502
In stock
NSN: 5331-00-917-4502
FSC Code: 5331
MPN: M259881220

5331-01-108-0079 (M25988/1-178)

NIIN: 01-108-0079
In stock
NSN: 5331-01-108-0079
FSC Code: 5331
MPN: M259881178

5331-01-029-8944 (M25988/1-208)

NIIN: 01-029-8944
In stock
NSN: 5331-01-029-8944
FSC Code: 5331
MPN: M259881208

5331-00-301-5296 (M25988/1-175)

NIIN: 00-301-5296
In stock
NSN: 5331-00-301-5296
FSC Code: 5331
MPN: M259881175

5331-01-104-0115 (M25988/1-173)

NIIN: 01-104-0115
In stock
NSN: 5331-01-104-0115
FSC Code: 5331
MPN: M259881173

5331-00-565-4978 (M25988/1-170)

NIIN: 00-565-4978
In stock
NSN: 5331-00-565-4978
FSC Code: 5331
MPN: M259881170

5331-01-006-9053 (M25988/1-167)

NIIN: 01-006-9053
In stock
NSN: 5331-01-006-9053
FSC Code: 5331
MPN: M259881167

5331-01-149-5968 (M25988/1-163)

NIIN: 01-149-5968
In stock
NSN: 5331-01-149-5968
FSC Code: 5331
MPN: M259881163

5331-01-129-2002 (M25988/1-168)

NIIN: 01-129-2002
In stock
NSN: 5331-01-129-2002
FSC Code: 5331
MPN: M259881168

5331-01-281-6513 (M25988/1-171)

NIIN: 01-281-6513
In stock
NSN: 5331-01-281-6513
FSC Code: 5331
MPN: M259881171

5331-01-006-9052 (M25988/1-165)

NIIN: 01-006-9052
In stock
NSN: 5331-01-006-9052
FSC Code: 5331
MPN: M259881165

5331-01-007-1607 (M25988/1-161)

NIIN: 01-007-1607
In stock
NSN: 5331-01-007-1607
FSC Code: 5331
MPN: M259881161

5331-01-008-5426 (M25988/1-157)

NIIN: 01-008-5426
In stock
NSN: 5331-01-008-5426
FSC Code: 5331
MPN: M259881157

5331-01-133-4880 (M25988/1-151)

NIIN: 01-133-4880
In stock
NSN: 5331-01-133-4880
FSC Code: 5331
MPN: M259881151

5331-01-007-1623 (M25988/1-144)

NIIN: 01-007-1623
In stock
NSN: 5331-01-007-1623
FSC Code: 5331
MPN: M259881144

5331-00-357-2039 (M25988/1-142)

NIIN: 00-357-2039
In stock
NSN: 5331-00-357-2039
FSC Code: 5331
MPN: M259881142

5331-00-279-9410 (M25988/1-045)

NIIN: 00-279-9410
In stock
NSN: 5331-00-279-9410
FSC Code: 5331
MPN: M259881045