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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.

5331-00-435-8505 (Y125-7)

NIIN: 00-435-8505
In stock
NSN: 5331-00-435-8505
FSC Code: 5331
MPN: Y1257

5331-01-196-2461 (Y125-28)

NIIN: 01-196-2461
In stock
NSN: 5331-01-196-2461
FSC Code: 5331
MPN: Y12528

5331-01-290-3362 (Y125-16)

NIIN: 01-290-3362
In stock
NSN: 5331-01-290-3362
FSC Code: 5331
MPN: Y12516

5331-01-196-6551 (Y125-15)

NIIN: 01-196-6551
In stock
NSN: 5331-01-196-6551
FSC Code: 5331
MPN: Y12515

5331-00-933-1364 (Y1175-2-1)

NIIN: 00-933-1364
In stock
NSN: 5331-00-933-1364
FSC Code: 5331
MPN: Y117521

5331-00-232-8315 (Y1175-6-9)

NIIN: 00-232-8315
In stock
NSN: 5331-00-232-8315
FSC Code: 5331
MPN: Y117569

5331-01-018-0756 (Y125-14)

NIIN: 01-018-0756
In stock
NSN: 5331-01-018-0756
FSC Code: 5331
MPN: Y12514

5331-00-232-7968 (Y1175-6-4)

NIIN: 00-232-7968
In stock
NSN: 5331-00-232-7968
FSC Code: 5331
MPN: Y117564

5331-00-435-8501 (Y125-1)

NIIN: 00-435-8501
In stock
NSN: 5331-00-435-8501
FSC Code: 5331
MPN: Y1251

5331-00-232-7967 (Y1175-6-2)

NIIN: 00-232-7967
In stock
NSN: 5331-00-232-7967
FSC Code: 5331
MPN: Y117562

5331-99-133-5127 (G221110311/G2211TT73)

NIIN: 99-133-5127
In stock
NSN: 5331-99-133-5127
FSC Code: 5331
MPN: G221110311G2211TT73

5331-99-168-2106 (G221110311/G2211TT73)

NIIN: 99-168-2106
In stock
NSN: 5331-99-168-2106
FSC Code: 5331
MPN: G221110311G2211TT73

5331-01-066-9414 (Y-1175-6-16)

NIIN: 01-066-9414
In stock
NSN: 5331-01-066-9414
FSC Code: 5331
MPN: Y1175616

5331-99-238-9088 (G221110311/G2211TT73)

NIIN: 99-238-9088
In stock
NSN: 5331-99-238-9088
FSC Code: 5331
MPN: G221110311G2211TT73

5331-99-488-7508 (G221110311/G2211TT73)

NIIN: 99-488-7508
In stock
NSN: 5331-99-488-7508
FSC Code: 5331
MPN: G221110311G2211TT73

5331-00-891-1429 (Y-1126-132)

NIIN: 00-891-1429
In stock
NSN: 5331-00-891-1429
FSC Code: 5331
MPN: Y1126132

5331-01-239-8645 (Y-1139-23-5)

NIIN: 01-239-8645
In stock
NSN: 5331-01-239-8645
FSC Code: 5331
MPN: Y1139235

5331-01-191-2318 (Y000-56)

NIIN: 01-191-2318
In stock
NSN: 5331-01-191-2318
FSC Code: 5331
MPN: Y00056

5331-01-361-2604 (G-2.0-692F-150-B1-0)

NIIN: 01-361-2604
In stock
NSN: 5331-01-361-2604
FSC Code: 5331
MPN: G20692F150B10

5331-00-232-8420 (XP175-6)

NIIN: 00-232-8420
In stock
NSN: 5331-00-232-8420
FSC Code: 5331
MPN: XP1756

5331-01-295-8721 (XNC-NS-019)

NIIN: 01-295-8721
In stock
NSN: 5331-01-295-8721
FSC Code: 5331
MPN: XNCNS019

5331-01-386-7478 (G150-00000-200)

NIIN: 01-386-7478
In stock
NSN: 5331-01-386-7478
FSC Code: 5331
MPN: G15000000200

5331-01-394-9308 (G14-473)

NIIN: 01-394-9308
In stock
NSN: 5331-01-394-9308
FSC Code: 5331
MPN: G14473

5331-01-295-8720 (XEQ-A-6770)

NIIN: 01-295-8720
In stock
NSN: 5331-01-295-8720
FSC Code: 5331
MPN: XEQA6770

5331-01-295-8722 (XCY-1A0520)

NIIN: 01-295-8722
In stock
NSN: 5331-01-295-8722
FSC Code: 5331
MPN: XCY1A0520

5331-01-287-6269 (XA-15938)

NIIN: 01-287-6269
In stock
NSN: 5331-01-287-6269
FSC Code: 5331
MPN: XA15938

5331-01-407-7247 (G113A)

NIIN: 01-407-7247
In stock
NSN: 5331-01-407-7247
FSC Code: 5331
MPN: G113A

5331-01-393-3042 (G1-1050-12)

NIIN: 01-393-3042
In stock
NSN: 5331-01-393-3042
FSC Code: 5331
MPN: G1105012

5331-01-215-1387 (X8019507-001)

NIIN: 01-215-1387
In stock
NSN: 5331-01-215-1387
FSC Code: 5331
MPN: X8019507001

5331-01-215-1389 (X8019507-002)

NIIN: 01-215-1389
In stock
NSN: 5331-01-215-1389
FSC Code: 5331
MPN: X8019507002

5331-00-585-5457 (X703)

NIIN: 00-585-5457
In stock
NSN: 5331-00-585-5457
FSC Code: 5331
MPN: X703

5331-01-226-6682 (X-6841)

NIIN: 01-226-6682
In stock
NSN: 5331-01-226-6682
FSC Code: 5331
MPN: X6841

5331-01-341-2128 (G-1.0-692F-B1-0)

NIIN: 01-341-2128
In stock
NSN: 5331-01-341-2128
FSC Code: 5331
MPN: G10692FB10

5331-01-392-1709 (G0V-060-000)

NIIN: 01-392-1709
In stock
NSN: 5331-01-392-1709
FSC Code: 5331
MPN: G0V060000

5331-01-391-0268 (G0V-050-016)

NIIN: 01-391-0268
In stock
NSN: 5331-01-391-0268
FSC Code: 5331
MPN: G0V050016

5331-01-522-2907 (G-0565A)

NIIN: 01-522-2907
In stock
NSN: 5331-01-522-2907
FSC Code: 5331
MPN: G0565A

5331-01-280-7514 (X-6477-1)

NIIN: 01-280-7514
In stock
NSN: 5331-01-280-7514
FSC Code: 5331
MPN: X64771

5331-01-289-1821 (X-6477-1)

NIIN: 01-289-1821
In stock
NSN: 5331-01-289-1821
FSC Code: 5331
MPN: X64771

5331-01-539-7572 (G-0186B)

NIIN: 01-539-7572
In stock
NSN: 5331-01-539-7572
FSC Code: 5331
MPN: G0186B

5331-01-296-1951 (X3Q-CH612-6)

NIIN: 01-296-1951
In stock
NSN: 5331-01-296-1951
FSC Code: 5331
MPN: X3QCH6126

5331-01-222-4002 (X3542)

NIIN: 01-222-4002
In stock
NSN: 5331-01-222-4002
FSC Code: 5331
MPN: X3542

5331-01-296-1952 (X30VA-024)

NIIN: 01-296-1952
In stock
NSN: 5331-01-296-1952
FSC Code: 5331
MPN: X30VA024

5331-01-295-8719 (X30VA-016)

NIIN: 01-295-8719
In stock
NSN: 5331-01-295-8719
FSC Code: 5331
MPN: X30VA016

5331-01-309-2484 (X25341)

NIIN: 01-309-2484
In stock
NSN: 5331-01-309-2484
FSC Code: 5331
MPN: X25341

5331-01-319-9223 (X-2260)

NIIN: 01-319-9223
In stock
NSN: 5331-01-319-9223
FSC Code: 5331
MPN: X2260

5331-01-319-9222 (X-2217)

NIIN: 01-319-9222
In stock
NSN: 5331-01-319-9222
FSC Code: 5331
MPN: X2217

5331-01-075-8483 (X20A11EM232)

NIIN: 01-075-8483
In stock
NSN: 5331-01-075-8483
FSC Code: 5331
MPN: X20A11EM232

5331-01-369-8838 (FV254-551-1)

NIIN: 01-369-8838
In stock
NSN: 5331-01-369-8838
FSC Code: 5331
MPN: FV2545511