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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.

5331-01-519-3757 (3209-2-012-V)

NIIN: 01-519-3757
In stock
NSN: 5331-01-519-3757
FSC Code: 5331
MPN: 32092012V

5331-20-002-7646 (320-75-119)

NIIN: 20-002-7646
In stock
NSN: 5331-20-002-7646
FSC Code: 5331
MPN: 32075119

5331-20-002-7618 (320-75-104)

NIIN: 20-002-7618
In stock
NSN: 5331-20-002-7618
FSC Code: 5331
MPN: 32075104

5331-01-532-1737 (32-0640)

NIIN: 01-532-1737
In stock
NSN: 5331-01-532-1737
FSC Code: 5331
MPN: 320640

5331-01-500-2769 (3205379W01)

NIIN: 01-500-2769
In stock
NSN: 5331-01-500-2769
FSC Code: 5331
MPN: 3205379W01

5331-01-500-2784 (3205126W01)

NIIN: 01-500-2784
In stock
NSN: 5331-01-500-2784
FSC Code: 5331
MPN: 3205126W01

5331-01-265-8811 (7142-1426A)

NIIN: 01-265-8811
In stock
NSN: 5331-01-265-8811
FSC Code: 5331
MPN: 71421426A

5331-00-905-4480 (7140257P6)

NIIN: 00-905-4480
In stock
NSN: 5331-00-905-4480
FSC Code: 5331
MPN: 7140257P6

5331-01-552-6097 (3201-36452-20-2)

NIIN: 01-552-6097
In stock
NSN: 5331-01-552-6097
FSC Code: 5331
MPN: 320136452202

5331-01-271-8296 (71348-0)

NIIN: 01-271-8296
In stock
NSN: 5331-01-271-8296
FSC Code: 5331
MPN: 713480

5331-00-995-1189 (71-350043-00)

NIIN: 00-995-1189
In stock
NSN: 5331-00-995-1189
FSC Code: 5331
MPN: 7135004300

5331-01-271-8297 (71349-0)

NIIN: 01-271-8297
In stock
NSN: 5331-01-271-8297
FSC Code: 5331
MPN: 713490

5331-01-271-8298 (71346-0)

NIIN: 01-271-8298
In stock
NSN: 5331-01-271-8298
FSC Code: 5331
MPN: 713460

5331-01-361-2964 (3-19647/NAVY)

NIIN: 01-361-2964
In stock
NSN: 5331-01-361-2964
FSC Code: 5331
MPN: 319647NAVY

5331-01-370-6913 (3-19202/NAVY)

NIIN: 01-370-6913
In stock
NSN: 5331-01-370-6913
FSC Code: 5331
MPN: 319202NAVY

5331-01-370-6912 (3-19202/NAVY)

NIIN: 01-370-6912
In stock
NSN: 5331-01-370-6912
FSC Code: 5331
MPN: 319202NAVY

5331-01-370-6914 (3-19202/NAVY)

NIIN: 01-370-6914
In stock
NSN: 5331-01-370-6914
FSC Code: 5331
MPN: 319202NAVY

5331-01-543-5768 (6395186-02)

NIIN: 01-543-5768
In stock
NSN: 5331-01-543-5768
FSC Code: 5331
MPN: 639518602

5331-01-390-1960 (318-69828)

NIIN: 01-390-1960
In stock
NSN: 5331-01-390-1960
FSC Code: 5331
MPN: 31869828

5331-01-223-7142 (71189-001)

NIIN: 01-223-7142
In stock
NSN: 5331-01-223-7142
FSC Code: 5331
MPN: 71189001

5331-01-216-9687 (71187-001)

NIIN: 01-216-9687
In stock
NSN: 5331-01-216-9687
FSC Code: 5331
MPN: 71187001

5331-01-351-6392 (5-070C1124-70)

NIIN: 01-351-6392
In stock
NSN: 5331-01-351-6392
FSC Code: 5331
MPN: 5070C112470

5331-01-453-6517 (3180364-4)

NIIN: 01-453-6517
In stock
NSN: 5331-01-453-6517
FSC Code: 5331
MPN: 31803644

5331-01-399-1647 (3180364-2)

NIIN: 01-399-1647
In stock
NSN: 5331-01-399-1647
FSC Code: 5331
MPN: 31803642

5331-01-407-9035 (3180364-1)

NIIN: 01-407-9035
In stock
NSN: 5331-01-407-9035
FSC Code: 5331
MPN: 31803641

5331-01-399-1651 (3180203-1)

NIIN: 01-399-1651
In stock
NSN: 5331-01-399-1651
FSC Code: 5331
MPN: 31802031

5331-01-396-9620 (3180052-1)

NIIN: 01-396-9620
In stock
NSN: 5331-01-396-9620
FSC Code: 5331
MPN: 31800521

5331-01-517-3344 (3178047-2)

NIIN: 01-517-3344
In stock
NSN: 5331-01-517-3344
FSC Code: 5331
MPN: 31780472

5331-01-290-9593 (71-1604)

NIIN: 01-290-9593
In stock
NSN: 5331-01-290-9593
FSC Code: 5331
MPN: 711604

5331-01-351-7615 (3176-E0)

NIIN: 01-351-7615
In stock
NSN: 5331-01-351-7615
FSC Code: 5331
MPN: 3176E0

5331-01-569-3225 (31-7598)

NIIN: 01-569-3225
In stock
NSN: 5331-01-569-3225
FSC Code: 5331
MPN: 317598

5331-01-334-3650 (711509-3)

NIIN: 01-334-3650
In stock
NSN: 5331-01-334-3650
FSC Code: 5331
MPN: 7115093

5331-01-533-4853 (31708-1360)

NIIN: 01-533-4853
In stock
NSN: 5331-01-533-4853
FSC Code: 5331
MPN: 317081360

5331-01-439-0085 (316D-001)

NIIN: 01-439-0085
In stock
NSN: 5331-01-439-0085
FSC Code: 5331
MPN: 316D001

5331-01-481-4356 (3168454-4)

NIIN: 01-481-4356
In stock
NSN: 5331-01-481-4356
FSC Code: 5331
MPN: 31684544

5331-01-349-8914 (3166734-30)

NIIN: 01-349-8914
In stock
NSN: 5331-01-349-8914
FSC Code: 5331
MPN: 316673430

5331-01-350-2257 (3166734-31)

NIIN: 01-350-2257
In stock
NSN: 5331-01-350-2257
FSC Code: 5331
MPN: 316673431

5331-01-183-5655 (7111MR-160-5770)

NIIN: 01-183-5655
In stock
NSN: 5331-01-183-5655
FSC Code: 5331
MPN: 7111MR1605770

5331-01-189-8332 (71-11A)

NIIN: 01-189-8332
In stock
NSN: 5331-01-189-8332
FSC Code: 5331
MPN: 7111A

5331-01-290-9592 (71-1010)

NIIN: 01-290-9592
In stock
NSN: 5331-01-290-9592
FSC Code: 5331
MPN: 711010

5331-01-109-6605 (710-FSO-16)

NIIN: 01-109-6605
In stock
NSN: 5331-01-109-6605
FSC Code: 5331
MPN: 710FSO16

5331-01-288-6604 (710FS0-14)

NIIN: 01-288-6604
In stock
NSN: 5331-01-288-6604
FSC Code: 5331
MPN: 710FS014

5331-01-475-6851 (316.56X2.62MM-80EP)

NIIN: 01-475-6851
In stock
NSN: 5331-01-475-6851
FSC Code: 5331
MPN: 31656X262MM80EP

5331-01-157-7143 (710893-43)

NIIN: 01-157-7143
In stock
NSN: 5331-01-157-7143
FSC Code: 5331
MPN: 71089343

5331-00-580-2452 (7108-2665)

NIIN: 00-580-2452
In stock
NSN: 5331-00-580-2452
FSC Code: 5331
MPN: 71082665

5331-01-558-9306 (31525-037)

NIIN: 01-558-9306
In stock
NSN: 5331-01-558-9306
FSC Code: 5331
MPN: 31525037

5331-01-467-9258 (31525-012)

NIIN: 01-467-9258
In stock
NSN: 5331-01-467-9258
FSC Code: 5331
MPN: 31525012

5331-01-558-9615 (31525-020)

NIIN: 01-558-9615
In stock
NSN: 5331-01-558-9615
FSC Code: 5331
MPN: 31525020