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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.

5331-00-072-8353 (3-908)

NIIN: 00-072-8353
In stock
NSN: 5331-00-072-8353
FSC Code: 5331
MPN: 3908

5331-01-089-2575 (3907V-7)

NIIN: 01-089-2575
In stock
NSN: 5331-01-089-2575
FSC Code: 5331
MPN: 3907V7

5331-01-289-9123 (3907V-9)

NIIN: 01-289-9123
In stock
NSN: 5331-01-289-9123
FSC Code: 5331
MPN: 3907V9

5331-01-243-8927 (3-907N552-90)

NIIN: 01-243-8927
In stock
NSN: 5331-01-243-8927
FSC Code: 5331
MPN: 3907N55290

5331-01-043-5512 (3-907N674-70)

NIIN: 01-043-5512
In stock
NSN: 5331-01-043-5512
FSC Code: 5331
MPN: 3907N67470

5331-01-541-1497 (1252019C1)

NIIN: 01-541-1497
In stock
NSN: 5331-01-541-1497
FSC Code: 5331
MPN: 1252019C1

5331-01-274-5600 (3-907E515-80)

NIIN: 01-274-5600
In stock
NSN: 5331-01-274-5600
FSC Code: 5331
MPN: 3907E51580

5331-01-171-9878 (3-9075604-7)

NIIN: 01-171-9878
In stock
NSN: 5331-01-171-9878
FSC Code: 5331
MPN: 390756047

5331-01-318-1981 (3-906V884-75)

NIIN: 01-318-1981
In stock
NSN: 5331-01-318-1981
FSC Code: 5331
MPN: 3906V88475

5331-01-293-1002 (3-907)

NIIN: 01-293-1002
In stock
NSN: 5331-01-293-1002
FSC Code: 5331
MPN: 3907

5331-00-117-4744 (3-906S455-7)

NIIN: 00-117-4744
In stock
NSN: 5331-00-117-4744
FSC Code: 5331
MPN: 3906S4557

5331-00-892-2289 (3-906N507-9)

NIIN: 00-892-2289
In stock
NSN: 5331-00-892-2289
FSC Code: 5331
MPN: 3906N5079

5331-00-020-7105 (3-906B318-70)

NIIN: 00-020-7105
In stock
NSN: 5331-00-020-7105
FSC Code: 5331
MPN: 3906B31870

5331-00-477-6749 (3-906L308-8)

NIIN: 00-477-6749
In stock
NSN: 5331-00-477-6749
FSC Code: 5331
MPN: 3906L3088

5331-01-215-9829 (3-906E692-75)

NIIN: 01-215-9829
In stock
NSN: 5331-01-215-9829
FSC Code: 5331
MPN: 3906E69275

5331-00-753-2033 (3-906E688-70)

NIIN: 00-753-2033
In stock
NSN: 5331-00-753-2033
FSC Code: 5331
MPN: 3906E68870

5331-01-219-0468 (3-906)

NIIN: 01-219-0468
In stock
NSN: 5331-01-219-0468
FSC Code: 5331
MPN: 3906

5331-01-183-9990 (3-906)

NIIN: 01-183-9990
In stock
NSN: 5331-01-183-9990
FSC Code: 5331
MPN: 3906

5331-00-966-9137 (3-905N674-7)

NIIN: 00-966-9137
In stock
NSN: 5331-00-966-9137
FSC Code: 5331
MPN: 3905N6747

5331-00-243-4780 (3-905N0674-70)

NIIN: 00-243-4780
In stock
NSN: 5331-00-243-4780
FSC Code: 5331
MPN: 3905N067470

5331-01-058-3363 (3-905S355-70)

NIIN: 01-058-3363
In stock
NSN: 5331-01-058-3363
FSC Code: 5331
MPN: 3905S35570

5331-01-163-0010 (3-905L1223-60)

NIIN: 01-163-0010
In stock
NSN: 5331-01-163-0010
FSC Code: 5331
MPN: 3905L122360

5331-01-063-3800 (3-905N299-50)

NIIN: 01-063-3800
In stock
NSN: 5331-01-063-3800
FSC Code: 5331
MPN: 3905N29950

5331-00-752-8325 (3-905B612-7)

NIIN: 00-752-8325
In stock
NSN: 5331-00-752-8325
FSC Code: 5331
MPN: 3905B6127

5331-01-059-1140 (3-905E540-80)

NIIN: 01-059-1140
In stock
NSN: 5331-01-059-1140
FSC Code: 5331
MPN: 3905E54080

5331-00-519-7828 (3-905E515-8)

NIIN: 00-519-7828
In stock
NSN: 5331-00-519-7828
FSC Code: 5331
MPN: 3905E5158

5331-00-148-3960 (3-905B612-7)

NIIN: 00-148-3960
In stock
NSN: 5331-00-148-3960
FSC Code: 5331
MPN: 3905B6127

5331-01-129-3140 (3-905)

NIIN: 01-129-3140
In stock
NSN: 5331-01-129-3140
FSC Code: 5331
MPN: 3905

5331-00-113-6438 (3-904-V835-75)

NIIN: 00-113-6438
In stock
NSN: 5331-00-113-6438
FSC Code: 5331
MPN: 3904V83575

5331-01-102-9878 (3-904N525-60)

NIIN: 01-102-9878
In stock
NSN: 5331-01-102-9878
FSC Code: 5331
MPN: 3904N52560

5331-00-983-9363 (3-904N674-7)

NIIN: 00-983-9363
In stock
NSN: 5331-00-983-9363
FSC Code: 5331
MPN: 3904N6747

5331-00-394-7369 (3-904-S383-70)

NIIN: 00-394-7369
In stock
NSN: 5331-00-394-7369
FSC Code: 5331
MPN: 3904S38370

5331-01-104-0117 (3-904N299-50)

NIIN: 01-104-0117
In stock
NSN: 5331-01-104-0117
FSC Code: 5331
MPN: 3904N29950

5331-00-541-2635 (3-904N168-80)

NIIN: 00-541-2635
In stock
NSN: 5331-00-541-2635
FSC Code: 5331
MPN: 3904N16880

5331-00-818-3130 (3-904E688-70)

NIIN: 00-818-3130
In stock
NSN: 5331-00-818-3130
FSC Code: 5331
MPN: 3904E68870

5331-00-764-9816 (3-904L1007-80)

NIIN: 00-764-9816
In stock
NSN: 5331-00-764-9816
FSC Code: 5331
MPN: 3904L100780

5331-01-268-1250 (3-904E515-80)

NIIN: 01-268-1250
In stock
NSN: 5331-01-268-1250
FSC Code: 5331
MPN: 3904E51580

5331-01-212-0834 (3-904B1167-80)

NIIN: 01-212-0834
In stock
NSN: 5331-01-212-0834
FSC Code: 5331
MPN: 3904B116780

5331-01-035-1909 (3-904L1007-80)

NIIN: 01-035-1909
In stock
NSN: 5331-01-035-1909
FSC Code: 5331
MPN: 3904L100780

5331-01-129-3145 (3-904(L1007-80))

NIIN: 01-129-3145
In stock
NSN: 5331-01-129-3145
FSC Code: 5331
MPN: 3904L100780

5331-00-187-6105 (3-904)

NIIN: 00-187-6105
In stock
NSN: 5331-00-187-6105
FSC Code: 5331
MPN: 3904

5331-00-823-4370 (390425-1)

NIIN: 00-823-4370
In stock
NSN: 5331-00-823-4370
FSC Code: 5331
MPN: 3904251

5331-00-558-1901 (3-904)

NIIN: 00-558-1901
In stock
NSN: 5331-00-558-1901
FSC Code: 5331
MPN: 3904

5331-00-494-7803 (3-903-V747-75)

NIIN: 00-494-7803
In stock
NSN: 5331-00-494-7803
FSC Code: 5331
MPN: 3903V74775

5331-01-076-0364 (3-903L1223-60)

NIIN: 01-076-0364
In stock
NSN: 5331-01-076-0364
FSC Code: 5331
MPN: 3903L122360

5331-00-135-0975 (3-903S455-7)

NIIN: 00-135-0975
In stock
NSN: 5331-00-135-0975
FSC Code: 5331
MPN: 3903S4557

5331-00-395-1647 (3-903-S383-70)

NIIN: 00-395-1647
In stock
NSN: 5331-00-395-1647
FSC Code: 5331
MPN: 3903S38370

5331-01-170-9114 (3-903-E603-7)

NIIN: 01-170-9114
In stock
NSN: 5331-01-170-9114
FSC Code: 5331
MPN: 3903E6037