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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.

5331-01-305-4350 (5-134-B612-70)

NIIN: 01-305-4350
In stock
NSN: 5331-01-305-4350
FSC Code: 5331
MPN: 5134B61270

5331-01-310-3986 (5-134V709-90)

NIIN: 01-310-3986
In stock
NSN: 5331-01-310-3986
FSC Code: 5331
MPN: 5134V70990

5331-01-047-9480 (5-134N304-75)

NIIN: 01-047-9480
In stock
NSN: 5331-01-047-9480
FSC Code: 5331
MPN: 5134N30475

5331-00-814-8636 (5-134)

NIIN: 00-814-8636
In stock
NSN: 5331-00-814-8636
FSC Code: 5331
MPN: 5134

5331-01-223-4807 (5-133-N304-75B1)

NIIN: 01-223-4807
In stock
NSN: 5331-01-223-4807
FSC Code: 5331
MPN: 5133N30475B1

5331-01-566-5728 (1871132C1)

NIIN: 01-566-5728
In stock
NSN: 5331-01-566-5728
FSC Code: 5331
MPN: 1871132C1

5331-01-029-1803 (5-133-8)

NIIN: 01-029-1803
In stock
NSN: 5331-01-029-1803
FSC Code: 5331
MPN: 51338

5331-01-029-1806 (5-133-22)

NIIN: 01-029-1806
In stock
NSN: 5331-01-029-1806
FSC Code: 5331
MPN: 513322

5331-01-029-1804 (5-133-14)

NIIN: 01-029-1804
In stock
NSN: 5331-01-029-1804
FSC Code: 5331
MPN: 513314

5331-00-618-6104 (513-3)

NIIN: 00-618-6104
In stock
NSN: 5331-00-618-6104
FSC Code: 5331
MPN: 5133

5331-00-771-7679 (5-133)

NIIN: 00-771-7679
In stock
NSN: 5331-00-771-7679
FSC Code: 5331
MPN: 5133

5331-00-936-9572 (5132502SAE120R1CLASS1)

NIIN: 00-936-9572
In stock
NSN: 5331-00-936-9572
FSC Code: 5331
MPN: 5132502SAE120R1CLASS1

5331-00-400-5451 (513-005-4)

NIIN: 00-400-5451
In stock
NSN: 5331-00-400-5451
FSC Code: 5331
MPN: 5130054

5331-01-361-5288 (186-6129)

NIIN: 01-361-5288
In stock
NSN: 5331-01-361-5288
FSC Code: 5331
MPN: 1866129

5331-01-351-2745 (18658-27)

NIIN: 01-351-2745
In stock
NSN: 5331-01-351-2745
FSC Code: 5331
MPN: 1865827

5331-01-359-1499 (186-6024)

NIIN: 01-359-1499
In stock
NSN: 5331-01-359-1499
FSC Code: 5331
MPN: 1866024

5331-01-447-6716 (18658-30)

NIIN: 01-447-6716
In stock
NSN: 5331-01-447-6716
FSC Code: 5331
MPN: 1865830

5331-01-351-2746 (18658-2)

NIIN: 01-351-2746
In stock
NSN: 5331-01-351-2746
FSC Code: 5331
MPN: 186582

5331-01-448-5910 (18658-25)

NIIN: 01-448-5910
In stock
NSN: 5331-01-448-5910
FSC Code: 5331
MPN: 1865825

5331-00-527-6034 (512A2-13)

NIIN: 00-527-6034
In stock
NSN: 5331-00-527-6034
FSC Code: 5331
MPN: 512A213

5331-00-291-5595 (512A2-2)

NIIN: 00-291-5595
In stock
NSN: 5331-00-291-5595
FSC Code: 5331
MPN: 512A22

5331-00-290-8828 (512A2-11)

NIIN: 00-290-8828
In stock
NSN: 5331-00-290-8828
FSC Code: 5331
MPN: 512A211

5331-01-182-5115 (5-125N702-90)

NIIN: 01-182-5115
In stock
NSN: 5331-01-182-5115
FSC Code: 5331
MPN: 5125N70290

5331-01-567-2917 (HY14-2536-M3/US)

NIIN: 01-567-2917
In stock
NSN: 5331-01-567-2917
FSC Code: 5331
MPN: HY142536M3US

5331-01-101-2517 (5-125-B612-70)

NIIN: 01-101-2517
In stock
NSN: 5331-01-101-2517
FSC Code: 5331
MPN: 5125B61270

5331-01-101-3193 (5-125)

NIIN: 01-101-3193
In stock
NSN: 5331-01-101-3193
FSC Code: 5331
MPN: 5125

5331-01-561-4986 (185D7159-4)

NIIN: 01-561-4986
In stock
NSN: 5331-01-561-4986
FSC Code: 5331
MPN: 185D71594

5331-01-408-7123 (18-59-MIL-1-2406-14)

NIIN: 01-408-7123
In stock
NSN: 5331-01-408-7123
FSC Code: 5331
MPN: 1859MIL1240614

5331-01-413-5500 (18-58002-1)

NIIN: 01-413-5500
In stock
NSN: 5331-01-413-5500
FSC Code: 5331
MPN: 18580021

5331-01-297-7428 (5120-V-15)

NIIN: 01-297-7428
In stock
NSN: 5331-01-297-7428
FSC Code: 5331
MPN: 5120V15

5331-00-641-3663 (5120-554514-2-4)

NIIN: 00-641-3663
In stock
NSN: 5331-00-641-3663
FSC Code: 5331
MPN: 512055451424

5331-00-486-8520 (5120-50)

NIIN: 00-486-8520
In stock
NSN: 5331-00-486-8520
FSC Code: 5331
MPN: 512050

5331-00-250-9894 (5120-20)

NIIN: 00-250-9894
In stock
NSN: 5331-00-250-9894
FSC Code: 5331
MPN: 512020

5331-01-436-6112 (185-6659)

NIIN: 01-436-6112
In stock
NSN: 5331-01-436-6112
FSC Code: 5331
MPN: 1856659

5331-01-514-6753 (185-6155)

NIIN: 01-514-6753
In stock
NSN: 5331-01-514-6753
FSC Code: 5331
MPN: 1856155

5331-01-514-1108 (185-5929)

NIIN: 01-514-1108
In stock
NSN: 5331-01-514-1108
FSC Code: 5331
MPN: 1855929

5331-01-514-5783 (185-5870)

NIIN: 01-514-5783
In stock
NSN: 5331-01-514-5783
FSC Code: 5331
MPN: 1855870

5331-01-436-6108 (185-5869)

NIIN: 01-436-6108
In stock
NSN: 5331-01-436-6108
FSC Code: 5331
MPN: 1855869

5331-01-514-1214 (185-5126)

NIIN: 01-514-1214
In stock
NSN: 5331-01-514-1214
FSC Code: 5331
MPN: 1855126

5331-01-436-6107 (185-3080)

NIIN: 01-436-6107
In stock
NSN: 5331-01-436-6107
FSC Code: 5331
MPN: 1853080

5331-01-411-4407 (185-2371)

NIIN: 01-411-4407
In stock
NSN: 5331-01-411-4407
FSC Code: 5331
MPN: 1852371

5331-01-411-5052 (185-2372)

NIIN: 01-411-5052
In stock
NSN: 5331-01-411-5052
FSC Code: 5331
MPN: 1852372

5331-01-411-4410 (185-2461)

NIIN: 01-411-4410
In stock
NSN: 5331-01-411-4410
FSC Code: 5331
MPN: 1852461

5331-01-411-5048 (185-2374)

NIIN: 01-411-5048
In stock
NSN: 5331-01-411-5048
FSC Code: 5331
MPN: 1852374

5331-01-411-5063 (185-2373)

NIIN: 01-411-5063
In stock
NSN: 5331-01-411-5063
FSC Code: 5331
MPN: 1852373

5331-01-411-5032 (185-2349)

NIIN: 01-411-5032
In stock
NSN: 5331-01-411-5032
FSC Code: 5331
MPN: 1852349

5331-01-412-0509 (185-2348)

NIIN: 01-412-0509
In stock
NSN: 5331-01-412-0509
FSC Code: 5331
MPN: 1852348

5331-01-411-5070 (185-2338)

NIIN: 01-411-5070
In stock
NSN: 5331-01-411-5070
FSC Code: 5331
MPN: 1852338