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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.

5331-01-304-1147 (A8241-403)

NIIN: 01-304-1147
In stock
NSN: 5331-01-304-1147
FSC Code: 5331
MPN: A8241403

5331-01-304-1146 (A8241-403)

NIIN: 01-304-1146
In stock
NSN: 5331-01-304-1146
FSC Code: 5331
MPN: A8241403

5331-01-303-9578 (A8241-403)

NIIN: 01-303-9578
In stock
NSN: 5331-01-303-9578
FSC Code: 5331
MPN: A8241403

5331-01-303-9579 (A8241-403)

NIIN: 01-303-9579
In stock
NSN: 5331-01-303-9579
FSC Code: 5331
MPN: A8241403

5331-01-304-1144 (A8241-403)

NIIN: 01-304-1144
In stock
NSN: 5331-01-304-1144
FSC Code: 5331
MPN: A8241403

5331-01-284-3725 (A8232)

NIIN: 01-284-3725
In stock
NSN: 5331-01-284-3725
FSC Code: 5331
MPN: A8232

5331-01-542-4591 (M83248/2-019D4)

NIIN: 01-542-4591
In stock
NSN: 5331-01-542-4591
FSC Code: 5331
MPN: M832482019D4

5331-01-280-7522 (A8036.044)

NIIN: 01-280-7522
In stock
NSN: 5331-01-280-7522
FSC Code: 5331
MPN: A8036044

5331-01-129-8669 (A791X73)

NIIN: 01-129-8669
In stock
NSN: 5331-01-129-8669
FSC Code: 5331
MPN: A791X73

5331-01-191-2308 (A7927.001.142)

NIIN: 01-191-2308
In stock
NSN: 5331-01-191-2308
FSC Code: 5331
MPN: A7927001142

5331-01-278-1731 (A791X12)

NIIN: 01-278-1731
In stock
NSN: 5331-01-278-1731
FSC Code: 5331
MPN: A791X12

5331-01-326-9331 (A791X083)

NIIN: 01-326-9331
In stock
NSN: 5331-01-326-9331
FSC Code: 5331
MPN: A791X083

5331-01-219-3998 (A788X5)

NIIN: 01-219-3998
In stock
NSN: 5331-01-219-3998
FSC Code: 5331
MPN: A788X5

5331-01-421-9887 (578064PC9)

NIIN: 01-421-9887
In stock
NSN: 5331-01-421-9887
FSC Code: 5331
MPN: 578064PC9

5331-01-537-3359 (5-780-47-071)

NIIN: 01-537-3359
In stock
NSN: 5331-01-537-3359
FSC Code: 5331
MPN: 578047071

5331-01-230-1592 (A-777-9N-0-02)

NIIN: 01-230-1592
In stock
NSN: 5331-01-230-1592
FSC Code: 5331
MPN: A7779N002

5331-01-172-1868 (A-777-JN-0-01-1)

NIIN: 01-172-1868
In stock
NSN: 5331-01-172-1868
FSC Code: 5331
MPN: A777JN0011

5331-00-484-8047 (A7695-24)

NIIN: 00-484-8047
In stock
NSN: 5331-00-484-8047
FSC Code: 5331
MPN: A769524

5331-00-757-7553 (A7623)

NIIN: 00-757-7553
In stock
NSN: 5331-00-757-7553
FSC Code: 5331
MPN: A7623

5331-01-374-4841 (5768570-240)

NIIN: 01-374-4841
In stock
NSN: 5331-01-374-4841
FSC Code: 5331
MPN: 5768570240

5331-01-374-4842 (5768570-220)

NIIN: 01-374-4842
In stock
NSN: 5331-01-374-4842
FSC Code: 5331
MPN: 5768570220

5331-01-263-6176 (A-7418-L)

NIIN: 01-263-6176
In stock
NSN: 5331-01-263-6176
FSC Code: 5331
MPN: A7418L

5331-00-052-2430 (A7267-266)

NIIN: 00-052-2430
In stock
NSN: 5331-00-052-2430
FSC Code: 5331
MPN: A7267266

5331-00-103-1842 (A72126)

NIIN: 00-103-1842
In stock
NSN: 5331-00-103-1842
FSC Code: 5331
MPN: A72126

5331-00-031-1952 (A7156)

NIIN: 00-031-1952
In stock
NSN: 5331-00-031-1952
FSC Code: 5331
MPN: A7156

5331-01-393-2624 (57495-04)

NIIN: 01-393-2624
In stock
NSN: 5331-01-393-2624
FSC Code: 5331
MPN: 5749504

5331-01-466-1557 (POD-57495)

NIIN: 01-466-1557
In stock
NSN: 5331-01-466-1557
FSC Code: 5331
MPN: POD57495

5331-01-393-2625 (57495-27)

NIIN: 01-393-2625
In stock
NSN: 5331-01-393-2625
FSC Code: 5331
MPN: 5749527

5331-01-393-2629 (57495-15)

NIIN: 01-393-2629
In stock
NSN: 5331-01-393-2629
FSC Code: 5331
MPN: 5749515

5331-01-393-2913 (POD57343-04)

NIIN: 01-393-2913
In stock
NSN: 5331-01-393-2913
FSC Code: 5331
MPN: POD5734304

5331-01-393-2627 (57495-28)

NIIN: 01-393-2627
In stock
NSN: 5331-01-393-2627
FSC Code: 5331
MPN: 5749528

5331-01-393-2912 (57495-10)

NIIN: 01-393-2912
In stock
NSN: 5331-01-393-2912
FSC Code: 5331
MPN: 5749510

5331-01-301-2078 (A7079)

NIIN: 01-301-2078
In stock
NSN: 5331-01-301-2078
FSC Code: 5331
MPN: A7079

5331-01-479-9996 (573801-00-60)

NIIN: 01-479-9996
In stock
NSN: 5331-01-479-9996
FSC Code: 5331
MPN: 5738010060

5331-01-507-5451 (5-736N304-75)

NIIN: 01-507-5451
In stock
NSN: 5331-01-507-5451
FSC Code: 5331
MPN: 5736N30475

5331-01-047-6126 (A686-212)

NIIN: 01-047-6126
In stock
NSN: 5331-01-047-6126
FSC Code: 5331
MPN: A686212

5331-01-150-1210 (A675-AE936-32)

NIIN: 01-150-1210
In stock
NSN: 5331-01-150-1210
FSC Code: 5331
MPN: A675AE93632

5331-01-133-8939 (A675-AE936-30)

NIIN: 01-133-8939
In stock
NSN: 5331-01-133-8939
FSC Code: 5331
MPN: A675AE93630

5331-01-133-8940 (A675-AE936-11)

NIIN: 01-133-8940
In stock
NSN: 5331-01-133-8940
FSC Code: 5331
MPN: A675AE93611

5331-01-061-6474 (A67054)

NIIN: 01-061-6474
In stock
NSN: 5331-01-061-6474
FSC Code: 5331
MPN: A67054

5331-01-029-2344 (A6689-904-212)

NIIN: 01-029-2344
In stock
NSN: 5331-01-029-2344
FSC Code: 5331
MPN: A6689904212

5331-00-152-5408 (A6689-040-235)

NIIN: 00-152-5408
In stock
NSN: 5331-00-152-5408
FSC Code: 5331
MPN: A6689040235

5331-00-395-2954 (A6689-244-212)

NIIN: 00-395-2954
In stock
NSN: 5331-00-395-2954
FSC Code: 5331
MPN: A6689244212

5331-01-023-7630 (A6689-118-144)

NIIN: 01-023-7630
In stock
NSN: 5331-01-023-7630
FSC Code: 5331
MPN: A6689118144

5331-00-192-9751 (A6689-216-142)

NIIN: 00-192-9751
In stock
NSN: 5331-00-192-9751
FSC Code: 5331
MPN: A6689216142

5331-00-165-1553 (A6689-213-142)

NIIN: 00-165-1553
In stock
NSN: 5331-00-165-1553
FSC Code: 5331
MPN: A6689213142

5331-00-115-1362 (A6689-212-142)

NIIN: 00-115-1362
In stock
NSN: 5331-00-115-1362
FSC Code: 5331
MPN: A6689212142

5331-00-102-8351 (A6689-113-142)

NIIN: 00-102-8351
In stock
NSN: 5331-00-102-8351
FSC Code: 5331
MPN: A6689113142