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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.

5331-01-496-7894 (3-916E603-70)

NIIN: 01-496-7894
In stock
NSN: 5331-01-496-7894
FSC Code: 5331
MPN: 3916E60370

5331-01-472-3037 (3-916L449-6)

NIIN: 01-472-3037
In stock
NSN: 5331-01-472-3037
FSC Code: 5331
MPN: 3916L4496

5331-01-572-2554 (3-916E652-90)

NIIN: 01-572-2554
In stock
NSN: 5331-01-572-2554
FSC Code: 5331
MPN: 3916E65290

5331-01-268-1026 (7909532-00)

NIIN: 01-268-1026
In stock
NSN: 5331-01-268-1026
FSC Code: 5331
MPN: 790953200

5331-01-503-3544 (9HE915)

NIIN: 01-503-3544
In stock
NSN: 5331-01-503-3544
FSC Code: 5331
MPN: 9HE915

5331-01-561-7442 (3-916)

NIIN: 01-561-7442
In stock
NSN: 5331-01-561-7442
FSC Code: 5331
MPN: 3916

5331-01-541-1316 (3-916)

NIIN: 01-541-1316
In stock
NSN: 5331-01-541-1316
FSC Code: 5331
MPN: 3916

5331-01-372-2304 (AS568-914/M2AA815A13EA14F17)

NIIN: 01-372-2304
In stock
NSN: 5331-01-372-2304
FSC Code: 5331
MPN: AS568914M2AA815A13EA14F17

5331-01-366-6214 (B-14SR2702-75)

NIIN: 01-366-6214
In stock
NSN: 5331-01-366-6214
FSC Code: 5331
MPN: B14SR270275

5331-01-462-8217 (3-912N1206-70)

NIIN: 01-462-8217
In stock
NSN: 5331-01-462-8217
FSC Code: 5331
MPN: 3912N120670

5331-01-385-5805 (391-2881-203)

NIIN: 01-385-5805
In stock
NSN: 5331-01-385-5805
FSC Code: 5331
MPN: 3912881203

5331-01-344-3870 (3-912B591-80)

NIIN: 01-344-3870
In stock
NSN: 5331-01-344-3870
FSC Code: 5331
MPN: 3912B59180

5331-01-541-1313 (3-912-N0552)

NIIN: 01-541-1313
In stock
NSN: 5331-01-541-1313
FSC Code: 5331
MPN: 3912N0552

5331-01-385-7833 (391-2881-196)

NIIN: 01-385-7833
In stock
NSN: 5331-01-385-7833
FSC Code: 5331
MPN: 3912881196

5331-01-385-5632 (391-2881-333)

NIIN: 01-385-5632
In stock
NSN: 5331-01-385-5632
FSC Code: 5331
MPN: 3912881333

5331-01-385-7815 (391-2881-363)

NIIN: 01-385-7815
In stock
NSN: 5331-01-385-7815
FSC Code: 5331
MPN: 3912881363

5331-01-478-3330 (391-2881-134)

NIIN: 01-478-3330
In stock
NSN: 5331-01-478-3330
FSC Code: 5331
MPN: 3912881134

5331-01-385-5580 (391-2881-096)

NIIN: 01-385-5580
In stock
NSN: 5331-01-385-5580
FSC Code: 5331
MPN: 3912881096

5331-01-382-8999 (391-2638-148)

NIIN: 01-382-8999
In stock
NSN: 5331-01-382-8999
FSC Code: 5331
MPN: 3912638148

5331-01-506-3328 (AS568-912ZZR765CL2BGR70)

NIIN: 01-506-3328
In stock
NSN: 5331-01-506-3328
FSC Code: 5331
MPN: AS568912ZZR765CL2BGR70

5331-01-561-7410 (3-912)

NIIN: 01-561-7410
In stock
NSN: 5331-01-561-7410
FSC Code: 5331
MPN: 3912

5331-01-211-1333 (79-013-1)

NIIN: 01-211-1333
In stock
NSN: 5331-01-211-1333
FSC Code: 5331
MPN: 790131

5331-01-507-5448 (3-910-N552-90)

NIIN: 01-507-5448
In stock
NSN: 5331-01-507-5448
FSC Code: 5331
MPN: 3910N55290

5331-01-490-7585 (3-910N674-70)

NIIN: 01-490-7585
In stock
NSN: 5331-01-490-7585
FSC Code: 5331
MPN: 3910N67470

5331-01-344-3868 (3-910N602-70)

NIIN: 01-344-3868
In stock
NSN: 5331-01-344-3868
FSC Code: 5331
MPN: 3910N60270

5331-01-347-1929 (3-910B1167-80)

NIIN: 01-347-1929
In stock
NSN: 5331-01-347-1929
FSC Code: 5331
MPN: 3910B116780

5331-01-046-3920 (79-002-1)

NIIN: 01-046-3920
In stock
NSN: 5331-01-046-3920
FSC Code: 5331
MPN: 790021

5331-01-529-6827 (FIND NO. 224 7385926FINDNO224)

NIIN: 01-529-6827
In stock
NSN: 5331-01-529-6827
FSC Code: 5331
MPN: FINDNO2247385926FINDNO224

5331-01-564-3529 (7HB866)

NIIN: 01-564-3529
In stock
NSN: 5331-01-564-3529
FSC Code: 5331
MPN: 7HB866

5331-12-322-9038 (700429390000)

NIIN: 12-322-9038
In stock
NSN: 5331-12-322-9038
FSC Code: 5331
MPN: 700429390000

5331-01-441-2965 (3-908L806-80)

NIIN: 01-441-2965
In stock
NSN: 5331-01-441-2965
FSC Code: 5331
MPN: 3908L80680

5331-01-462-8215 (3-908N1206-70)

NIIN: 01-462-8215
In stock
NSN: 5331-01-462-8215
FSC Code: 5331
MPN: 3908N120670

5331-01-361-5583 (5330-006-0016)

NIIN: 01-361-5583
In stock
NSN: 5331-01-361-5583
FSC Code: 5331
MPN: 53300060016

5331-00-819-1511 (78M71-09PC29)

NIIN: 00-819-1511
In stock
NSN: 5331-00-819-1511
FSC Code: 5331
MPN: 78M7109PC29

5331-00-819-1508 (78M71-09PC27)

NIIN: 00-819-1508
In stock
NSN: 5331-00-819-1508
FSC Code: 5331
MPN: 78M7109PC27

5331-01-411-5876 (5331PL1677677)

NIIN: 01-411-5876
In stock
NSN: 5331-01-411-5876
FSC Code: 5331
MPN: 5331PL1677677

5331-01-561-7728 (3-908)

NIIN: 01-561-7728
In stock
NSN: 5331-01-561-7728
FSC Code: 5331
MPN: 3908

5331-01-572-2549 (3-906E652-90)

NIIN: 01-572-2549
In stock
NSN: 5331-01-572-2549
FSC Code: 5331
MPN: 3906E65290

5331-01-515-8382 (3-906E540-80(MIL-M-24777))

NIIN: 01-515-8382
In stock
NSN: 5331-01-515-8382
FSC Code: 5331
MPN: 3906E54080MILM24777

5331-01-441-5294 (568-906-1235-70)

NIIN: 01-441-5294
In stock
NSN: 5331-01-441-5294
FSC Code: 5331
MPN: 568906123570

5331-01-473-1563 (E130000700-907)

NIIN: 01-473-1563
In stock
NSN: 5331-01-473-1563
FSC Code: 5331
MPN: E130000700907

5331-01-527-1768 (3-906-V0747-75)

NIIN: 01-527-1768
In stock
NSN: 5331-01-527-1768
FSC Code: 5331
MPN: 3906V074775

5331-01-377-1564 (3-906V747-75)

NIIN: 01-377-1564
In stock
NSN: 5331-01-377-1564
FSC Code: 5331
MPN: 3906V74775

5331-01-412-4457 (5331PL1866113)

NIIN: 01-412-4457
In stock
NSN: 5331-01-412-4457
FSC Code: 5331
MPN: 5331PL1866113

5331-01-497-9327 (4900387-4)

NIIN: 01-497-9327
In stock
NSN: 5331-01-497-9327
FSC Code: 5331
MPN: 49003874

5331-01-572-4794 (3-905F953-70)

NIIN: 01-572-4794
In stock
NSN: 5331-01-572-4794
FSC Code: 5331
MPN: 3905F95370

5331-01-387-2249 (3-905E515-80)

NIIN: 01-387-2249
In stock
NSN: 5331-01-387-2249
FSC Code: 5331
MPN: 3905E51580

5331-01-460-1037 (3-904C147-70)

NIIN: 01-460-1037
In stock
NSN: 5331-01-460-1037
FSC Code: 5331
MPN: 3904C14770