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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.

5331-01-359-6719 (200-041-4490)

NIIN: 01-359-6719
In stock
NSN: 5331-01-359-6719
FSC Code: 5331
MPN: 2000414490

5331-01-137-7078 (5-401C147-70)

NIIN: 01-137-7078
In stock
NSN: 5331-01-137-7078
FSC Code: 5331
MPN: 5401C14770

5331-01-341-9361 (200-032-4470)

NIIN: 01-341-9361
In stock
NSN: 5331-01-341-9361
FSC Code: 5331
MPN: 2000324470

5331-99-544-1309 (200-021-4480)

NIIN: 99-544-1309
In stock
NSN: 5331-99-544-1309
FSC Code: 5331
MPN: 2000214480

5331-99-544-1308 (P8848-00-0100)

NIIN: 99-544-1308
In stock
NSN: 5331-99-544-1308
FSC Code: 5331
MPN: P8848000100

5331-22-269-2318 (200-0117)

NIIN: 22-269-2318
In stock
NSN: 5331-22-269-2318
FSC Code: 5331
MPN: 2000117

5331-01-375-6453 (200-012-4470)

NIIN: 01-375-6453
In stock
NSN: 5331-01-375-6453
FSC Code: 5331
MPN: 2000124470

5331-01-272-3411 (5400-14)

NIIN: 01-272-3411
In stock
NSN: 5331-01-272-3411
FSC Code: 5331
MPN: 540014

5331-99-545-8969 (200-008-4480)

NIIN: 99-545-8969
In stock
NSN: 5331-99-545-8969
FSC Code: 5331
MPN: 2000084480

5331-01-199-9477 (54-000299-000)

NIIN: 01-199-9477
In stock
NSN: 5331-01-199-9477
FSC Code: 5331
MPN: 54000299000

5331-01-272-0640 (53S-0022V0020)

NIIN: 01-272-0640
In stock
NSN: 5331-01-272-0640
FSC Code: 5331
MPN: 53S0022V0020

5331-01-067-3289 (53S-0590M-001)

NIIN: 01-067-3289
In stock
NSN: 5331-01-067-3289
FSC Code: 5331
MPN: 53S0590M001

5331-00-770-9410 (53S)

NIIN: 00-770-9410
In stock
NSN: 5331-00-770-9410
FSC Code: 5331
MPN: 53S

5331-01-422-6038 (2.50IN-R64466TTSW)

NIIN: 01-422-6038
In stock
NSN: 5331-01-422-6038
FSC Code: 5331
MPN: 250INR64466TTSW

5331-01-364-1517 (2.72-34261-7)

NIIN: 01-364-1517
In stock
NSN: 5331-01-364-1517
FSC Code: 5331
MPN: 272342617

5331-01-363-3462 (9.21.103E981-50)

NIIN: 01-363-3462
In stock
NSN: 5331-01-363-3462
FSC Code: 5331
MPN: 921103E98150

5331-01-365-4787 (2.72-34072-3708)

NIIN: 01-365-4787
In stock
NSN: 5331-01-365-4787
FSC Code: 5331
MPN: 272340723708

5331-01-361-2966 (2.337X0.118)

NIIN: 01-361-2966
In stock
NSN: 5331-01-361-2966
FSC Code: 5331
MPN: 2337X0118

5331-01-528-8371 (2.3.5.1)

NIIN: 01-528-8371
In stock
NSN: 5331-01-528-8371
FSC Code: 5331
MPN: 2351

5331-15-198-3129 (1Z)

NIIN: 15-198-3129
In stock
NSN: 5331-15-198-3129
FSC Code: 5331
MPN: 1Z

5331-15-198-3131 (1Z)

NIIN: 15-198-3131
In stock
NSN: 5331-15-198-3131
FSC Code: 5331
MPN: 1Z

5331-01-340-8179 (BY49122C-TFGP)

NIIN: 01-340-8179
In stock
NSN: 5331-01-340-8179
FSC Code: 5331
MPN: BY49122CTFGP

5331-01-570-6506 (1X7325)

NIIN: 01-570-6506
In stock
NSN: 5331-01-570-6506
FSC Code: 5331
MPN: 1X7325

5331-01-351-2731 (1W-3557)

NIIN: 01-351-2731
In stock
NSN: 5331-01-351-2731
FSC Code: 5331
MPN: 1W3557

5331-00-720-2637 (53A22177)

NIIN: 00-720-2637
In stock
NSN: 5331-00-720-2637
FSC Code: 5331
MPN: 53A22177

5331-01-313-5725 (5-39MIL3-1606-14)

NIIN: 01-313-5725
In stock
NSN: 5331-01-313-5725
FSC Code: 5331
MPN: 539MIL3160614

5331-01-287-4820 (53A-00-149-2)

NIIN: 01-287-4820
In stock
NSN: 5331-01-287-4820
FSC Code: 5331
MPN: 53A001492

5331-00-821-2972 (539D520P013)

NIIN: 00-821-2972
In stock
NSN: 5331-00-821-2972
FSC Code: 5331
MPN: 539D520P013

5331-01-280-8226 (5-39MIL3-1204-14)

NIIN: 01-280-8226
In stock
NSN: 5331-01-280-8226
FSC Code: 5331
MPN: 539MIL3120414

5331-01-351-3543 (1W-0118)

NIIN: 01-351-3543
In stock
NSN: 5331-01-351-3543
FSC Code: 5331
MPN: 1W0118

5331-01-425-0421 (6V-5141)

NIIN: 01-425-0421
In stock
NSN: 5331-01-425-0421
FSC Code: 5331
MPN: 6V5141

5331-01-351-3542 (1W-0115)

NIIN: 01-351-3542
In stock
NSN: 5331-01-351-3542
FSC Code: 5331
MPN: 1W0115

5331-00-930-4322 (5-3965613-60)

NIIN: 00-930-4322
In stock
NSN: 5331-00-930-4322
FSC Code: 5331
MPN: 5396561360

5331-01-395-8050 (1SSB790KLPS2-U)

NIIN: 01-395-8050
In stock
NSN: 5331-01-395-8050
FSC Code: 5331
MPN: 1SSB790KLPS2U

5331-01-291-0021 (53-912)

NIIN: 01-291-0021
In stock
NSN: 5331-01-291-0021
FSC Code: 5331
MPN: 53912

5331-01-197-2282 (53-910)

NIIN: 01-197-2282
In stock
NSN: 5331-01-197-2282
FSC Code: 5331
MPN: 53910

5331-00-559-2107 (53910-6)

NIIN: 00-559-2107
In stock
NSN: 5331-00-559-2107
FSC Code: 5331
MPN: 539106

5331-01-296-2654 (53-908)

NIIN: 01-296-2654
In stock
NSN: 5331-01-296-2654
FSC Code: 5331
MPN: 53908

5331-01-287-0922 (539-0779)

NIIN: 01-287-0922
In stock
NSN: 5331-01-287-0922
FSC Code: 5331
MPN: 5390779

5331-01-201-0164 (538F0R525-SN-1)

NIIN: 01-201-0164
In stock
NSN: 5331-01-201-0164
FSC Code: 5331
MPN: 538F0R525SN1

5331-01-438-3433 (1S-5473-.75IN)

NIIN: 01-438-3433
In stock
NSN: 5331-01-438-3433
FSC Code: 5331
MPN: 1S547375IN

5331-01-438-3449 (1S-5473-.75IN)

NIIN: 01-438-3449
In stock
NSN: 5331-01-438-3449
FSC Code: 5331
MPN: 1S547375IN

5331-01-499-4541 (D3114444A)

NIIN: 01-499-4541
In stock
NSN: 5331-01-499-4541
FSC Code: 5331
MPN: D3114444A

5331-01-499-4539 (D3114448A)

NIIN: 01-499-4539
In stock
NSN: 5331-01-499-4539
FSC Code: 5331
MPN: D3114448A

5331-01-499-4534 (D3114447A)

NIIN: 01-499-4534
In stock
NSN: 5331-01-499-4534
FSC Code: 5331
MPN: D3114447A

5331-01-499-4536 (D3114432A)

NIIN: 01-499-4536
In stock
NSN: 5331-01-499-4536
FSC Code: 5331
MPN: D3114432A

5331-01-499-4537 (D3114434A)

NIIN: 01-499-4537
In stock
NSN: 5331-01-499-4537
FSC Code: 5331
MPN: D3114434A

5331-15-179-6463 (1R346706)

NIIN: 15-179-6463
In stock
NSN: 5331-15-179-6463
FSC Code: 5331
MPN: 1R346706