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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.

5331-01-516-4005 (2-024E515-80)

NIIN: 01-516-4005
In stock
NSN: 5331-01-516-4005
FSC Code: 5331
MPN: 2024E51580

5331-01-250-0652 (5530-224)

NIIN: 01-250-0652
In stock
NSN: 5331-01-250-0652
FSC Code: 5331
MPN: 5530224

5331-01-507-0286 (5162-021-000)

NIIN: 01-507-0286
In stock
NSN: 5331-01-507-0286
FSC Code: 5331
MPN: 5162021000

5331-01-312-0162 (5530-137)

NIIN: 01-312-0162
In stock
NSN: 5331-01-312-0162
FSC Code: 5331
MPN: 5530137

5331-01-494-5486 (2-024L1218-80)

NIIN: 01-494-5486
In stock
NSN: 5331-01-494-5486
FSC Code: 5331
MPN: 2024L121880

5331-01-312-0161 (5530-135)

NIIN: 01-312-0161
In stock
NSN: 5331-01-312-0161
FSC Code: 5331
MPN: 5530135

5331-01-276-8432 (5530-115)

NIIN: 01-276-8432
In stock
NSN: 5331-01-276-8432
FSC Code: 5331
MPN: 5530115

5331-01-255-1852 (5530-113)

NIIN: 01-255-1852
In stock
NSN: 5331-01-255-1852
FSC Code: 5331
MPN: 5530113

5331-01-296-6454 (5530-012)

NIIN: 01-296-6454
In stock
NSN: 5331-01-296-6454
FSC Code: 5331
MPN: 5530012

5331-01-272-4838 (55300-11000)

NIIN: 01-272-4838
In stock
NSN: 5331-01-272-4838
FSC Code: 5331
MPN: 5530011000

5331-01-324-3397 (5526-116)

NIIN: 01-324-3397
In stock
NSN: 5331-01-324-3397
FSC Code: 5331
MPN: 5526116

5331-01-324-2532 (5526-212)

NIIN: 01-324-2532
In stock
NSN: 5331-01-324-2532
FSC Code: 5331
MPN: 5526212

5331-01-324-3394 (5526-117)

NIIN: 01-324-3394
In stock
NSN: 5331-01-324-3394
FSC Code: 5331
MPN: 5526117

5331-01-334-2731 (5526-115)

NIIN: 01-334-2731
In stock
NSN: 5331-01-334-2731
FSC Code: 5331
MPN: 5526115

5331-01-382-5198 (2-024)

NIIN: 01-382-5198
In stock
NSN: 5331-01-382-5198
FSC Code: 5331
MPN: 2024

5331-01-461-2004 (705748-001)

NIIN: 01-461-2004
In stock
NSN: 5331-01-461-2004
FSC Code: 5331
MPN: 705748001

5331-01-360-1900 (2-023-V835-75)

NIIN: 01-360-1900
In stock
NSN: 5331-01-360-1900
FSC Code: 5331
MPN: 2023V83575

5331-01-324-3396 (5526-114)

NIIN: 01-324-3396
In stock
NSN: 5331-01-324-3396
FSC Code: 5331
MPN: 5526114

5331-01-497-3079 (202368-1)

NIIN: 01-497-3079
In stock
NSN: 5331-01-497-3079
FSC Code: 5331
MPN: 2023681

5331-01-505-7283 (202-3263)

NIIN: 01-505-7283
In stock
NSN: 5331-01-505-7283
FSC Code: 5331
MPN: 2023263

5331-01-500-9673 (820-6896278PC8)

NIIN: 01-500-9673
In stock
NSN: 5331-01-500-9673
FSC Code: 5331
MPN: 8206896278PC8

5331-01-491-4480 (23247-03424)

NIIN: 01-491-4480
In stock
NSN: 5331-01-491-4480
FSC Code: 5331
MPN: 2324703424

5331-01-441-6389 (2-022S899-50)

NIIN: 01-441-6389
In stock
NSN: 5331-01-441-6389
FSC Code: 5331
MPN: 2022S89950

5331-01-129-8887 (55-22055)

NIIN: 01-129-8887
In stock
NSN: 5331-01-129-8887
FSC Code: 5331
MPN: 5522055

5331-01-249-1630 (55-22046-54)

NIIN: 01-249-1630
In stock
NSN: 5331-01-249-1630
FSC Code: 5331
MPN: 552204654

5331-00-901-0360 (55-216-8307)

NIIN: 00-901-0360
In stock
NSN: 5331-00-901-0360
FSC Code: 5331
MPN: 552168307

5331-01-020-9255 (55-2039)

NIIN: 01-020-9255
In stock
NSN: 5331-01-020-9255
FSC Code: 5331
MPN: 552039

5331-01-278-8285 (551-6685221-6)

NIIN: 01-278-8285
In stock
NSN: 5331-01-278-8285
FSC Code: 5331
MPN: 55166852216

5331-01-143-1020 (5-516N674-70)

NIIN: 01-143-1020
In stock
NSN: 5331-01-143-1020
FSC Code: 5331
MPN: 5516N67470

5331-00-216-8475 (5-516N506-7)

NIIN: 00-216-8475
In stock
NSN: 5331-00-216-8475
FSC Code: 5331
MPN: 5516N5067

5331-01-172-6394 (55-154-8309)

NIIN: 01-172-6394
In stock
NSN: 5331-01-172-6394
FSC Code: 5331
MPN: 551548309

5331-01-309-2489 (55-153-8309)

NIIN: 01-309-2489
In stock
NSN: 5331-01-309-2489
FSC Code: 5331
MPN: 551538309

5331-00-343-1599 (551-12536-2)

NIIN: 00-343-1599
In stock
NSN: 5331-00-343-1599
FSC Code: 5331
MPN: 551125362

5331-00-081-7172 (55-1109)

NIIN: 00-081-7172
In stock
NSN: 5331-00-081-7172
FSC Code: 5331
MPN: 551109

5331-01-408-7361 (2-021S595-50)

NIIN: 01-408-7361
In stock
NSN: 5331-01-408-7361
FSC Code: 5331
MPN: 2021S59550

5331-01-522-5671 (2-021N552-90)

NIIN: 01-522-5671
In stock
NSN: 5331-01-522-5671
FSC Code: 5331
MPN: 2021N55290

5331-01-469-1835 (2-021N0552-90)

NIIN: 01-469-1835
In stock
NSN: 5331-01-469-1835
FSC Code: 5331
MPN: 2021N055290

5331-01-516-8839 (2-021C3229-70)

NIIN: 01-516-8839
In stock
NSN: 5331-01-516-8839
FSC Code: 5331
MPN: 2021C322970

5331-01-571-5903 (2-021N0756)

NIIN: 01-571-5903
In stock
NSN: 5331-01-571-5903
FSC Code: 5331
MPN: 2021N0756

5331-01-513-4618 (5331-LL-N01-J751)

NIIN: 01-513-4618
In stock
NSN: 5331-01-513-4618
FSC Code: 5331
MPN: 5331LLN01J751

5331-01-342-2544 (202-13)

NIIN: 01-342-2544
In stock
NSN: 5331-01-342-2544
FSC Code: 5331
MPN: 20213

5331-01-503-3972 (9HE914)

NIIN: 01-503-3972
In stock
NSN: 5331-01-503-3972
FSC Code: 5331
MPN: 9HE914

5331-01-426-0803 (2-020N760-90)

NIIN: 01-426-0803
In stock
NSN: 5331-01-426-0803
FSC Code: 5331
MPN: 2020N76090

5331-01-561-7554 (2-021)

NIIN: 01-561-7554
In stock
NSN: 5331-01-561-7554
FSC Code: 5331
MPN: 2021

5331-01-571-9849 (2-020S0604-70)

NIIN: 01-571-9849
In stock
NSN: 5331-01-571-9849
FSC Code: 5331
MPN: 2020S060470

5331-01-567-5464 (2-021)

NIIN: 01-567-5464
In stock
NSN: 5331-01-567-5464
FSC Code: 5331
MPN: 2021

5331-01-513-4788 (5330-LL-N01-K151)

NIIN: 01-513-4788
In stock
NSN: 5331-01-513-4788
FSC Code: 5331
MPN: 5330LLN01K151

5331-01-553-1114 (20204N674-70)

NIIN: 01-553-1114
In stock
NSN: 5331-01-553-1114
FSC Code: 5331
MPN: 20204N67470