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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.

5331-01-536-0587 (1202-904-24)

NIIN: 01-536-0587
In stock
NSN: 5331-01-536-0587
FSC Code: 5331
MPN: 120290424

5331-01-518-6949 (1202-904-11)

NIIN: 01-518-6949
In stock
NSN: 5331-01-518-6949
FSC Code: 5331
MPN: 120290411

5331-00-576-9925 (3-6-47-071)

NIIN: 00-576-9925
In stock
NSN: 5331-00-576-9925
FSC Code: 5331
MPN: 3647071

5331-01-128-0139 (3646-17-5)

NIIN: 01-128-0139
In stock
NSN: 5331-01-128-0139
FSC Code: 5331
MPN: 3646175

5331-01-479-2541 (12-02-1822)

NIIN: 01-479-2541
In stock
NSN: 5331-01-479-2541
FSC Code: 5331
MPN: 12021822

5331-01-520-6702 (1202-016-14)

NIIN: 01-520-6702
In stock
NSN: 5331-01-520-6702
FSC Code: 5331
MPN: 120201614

5331-01-518-6953 (1202-009-16)

NIIN: 01-518-6953
In stock
NSN: 5331-01-518-6953
FSC Code: 5331
MPN: 120200916

5331-01-519-4965 (1202-013-23)

NIIN: 01-519-4965
In stock
NSN: 5331-01-519-4965
FSC Code: 5331
MPN: 120201323

5331-01-518-6952 (1202-006-27)

NIIN: 01-518-6952
In stock
NSN: 5331-01-518-6952
FSC Code: 5331
MPN: 120200627

5331-01-518-6955 (1202-008-27)

NIIN: 01-518-6955
In stock
NSN: 5331-01-518-6955
FSC Code: 5331
MPN: 120200827

5331-01-541-3680 (1201T34)

NIIN: 01-541-3680
In stock
NSN: 5331-01-541-3680
FSC Code: 5331
MPN: 1201T34

5331-01-329-1886 (364145R1)

NIIN: 01-329-1886
In stock
NSN: 5331-01-329-1886
FSC Code: 5331
MPN: 364145R1

5331-01-284-3729 (364-0558-474)

NIIN: 01-284-3729
In stock
NSN: 5331-01-284-3729
FSC Code: 5331
MPN: 3640558474

5331-00-606-8993 (364-0538-457)

NIIN: 00-606-8993
In stock
NSN: 5331-00-606-8993
FSC Code: 5331
MPN: 3640538457

5331-00-308-2431 (364-0431-474)

NIIN: 00-308-2431
In stock
NSN: 5331-00-308-2431
FSC Code: 5331
MPN: 3640431474

5331-00-104-6294 (364-0431-457)

NIIN: 00-104-6294
In stock
NSN: 5331-00-104-6294
FSC Code: 5331
MPN: 3640431457

5331-01-284-3728 (364-0420-474)

NIIN: 01-284-3728
In stock
NSN: 5331-01-284-3728
FSC Code: 5331
MPN: 3640420474

5331-01-064-3862 (364-0430-457)

NIIN: 01-064-3862
In stock
NSN: 5331-01-064-3862
FSC Code: 5331
MPN: 3640430457

5331-00-606-9001 (364-0419-457)

NIIN: 00-606-9001
In stock
NSN: 5331-00-606-9001
FSC Code: 5331
MPN: 3640419457

5331-01-053-2904 (364-0420-457)

NIIN: 01-053-2904
In stock
NSN: 5331-01-053-2904
FSC Code: 5331
MPN: 3640420457

5331-01-274-6096 (364-0349-457)

NIIN: 01-274-6096
In stock
NSN: 5331-01-274-6096
FSC Code: 5331
MPN: 3640349457

5331-00-897-2313 (364-0326-457)

NIIN: 00-897-2313
In stock
NSN: 5331-00-897-2313
FSC Code: 5331
MPN: 3640326457

5331-14-430-3611 (WA250G03000DC4A)

NIIN: 14-430-3611
In stock
NSN: 5331-14-430-3611
FSC Code: 5331
MPN: WA250G03000DC4A

5331-01-424-4273 (61-813-0025-3B)

NIIN: 01-424-4273
In stock
NSN: 5331-01-424-4273
FSC Code: 5331
MPN: 6181300253B

5331-01-424-4276 (120-11000PC106)

NIIN: 01-424-4276
In stock
NSN: 5331-01-424-4276
FSC Code: 5331
MPN: 12011000PC106

5331-01-329-6609 (3636/1-130)

NIIN: 01-329-6609
In stock
NSN: 5331-01-329-6609
FSC Code: 5331
MPN: 36361130

5331-01-236-9922 (3636-2-035)

NIIN: 01-236-9922
In stock
NSN: 5331-01-236-9922
FSC Code: 5331
MPN: 36362035

5331-01-191-2958 (3636/1-161)

NIIN: 01-191-2958
In stock
NSN: 5331-01-191-2958
FSC Code: 5331
MPN: 36361161

5331-01-191-2957 (3636/2-908)

NIIN: 01-191-2957
In stock
NSN: 5331-01-191-2957
FSC Code: 5331
MPN: 36362908

5331-01-329-6608 (3636/1-154)

NIIN: 01-329-6608
In stock
NSN: 5331-01-329-6608
FSC Code: 5331
MPN: 36361154

5331-01-189-3622 (3636/2-134)

NIIN: 01-189-3622
In stock
NSN: 5331-01-189-3622
FSC Code: 5331
MPN: 36362134

5331-00-684-7903 (3634-192-11-70)

NIIN: 00-684-7903
In stock
NSN: 5331-00-684-7903
FSC Code: 5331
MPN: 36341921170

5331-00-599-2889 (3634-90-07-70)

NIIN: 00-599-2889
In stock
NSN: 5331-00-599-2889
FSC Code: 5331
MPN: 3634900770

5331-00-807-1967 (3634-96-11-70)

NIIN: 00-807-1967
In stock
NSN: 5331-00-807-1967
FSC Code: 5331
MPN: 3634961170

5331-00-139-6916 (3634-204-11-70)

NIIN: 00-139-6916
In stock
NSN: 5331-00-139-6916
FSC Code: 5331
MPN: 36342041170

5331-00-816-3574 (3634-123-11-170)

NIIN: 00-816-3574
In stock
NSN: 5331-00-816-3574
FSC Code: 5331
MPN: 363412311170

5331-00-805-9436 (3634-124-11-70)

NIIN: 00-805-9436
In stock
NSN: 5331-00-805-9436
FSC Code: 5331
MPN: 36341241170

5331-00-850-7536 (3634-122-11-70)

NIIN: 00-850-7536
In stock
NSN: 5331-00-850-7536
FSC Code: 5331
MPN: 36341221170

5331-00-584-2276 (3634-115-11-70)

NIIN: 00-584-2276
In stock
NSN: 5331-00-584-2276
FSC Code: 5331
MPN: 36341151170

5331-00-803-2709 (3634-100-11-70)

NIIN: 00-803-2709
In stock
NSN: 5331-00-803-2709
FSC Code: 5331
MPN: 36341001170

5331-00-723-2491 (3634-105-11-90)

NIIN: 00-723-2491
In stock
NSN: 5331-00-723-2491
FSC Code: 5331
MPN: 36341051190

5331-00-618-3349 (3634-118-11-70)

NIIN: 00-618-3349
In stock
NSN: 5331-00-618-3349
FSC Code: 5331
MPN: 36341181170

5331-00-805-9435 (3634-119-11-70)

NIIN: 00-805-9435
In stock
NSN: 5331-00-805-9435
FSC Code: 5331
MPN: 36341191170

5331-01-340-5561 (PDFR80-4GR22B5/5)

NIIN: 01-340-5561
In stock
NSN: 5331-01-340-5561
FSC Code: 5331
MPN: PDFR804GR22B55

5331-01-191-4538 (363226R1)

NIIN: 01-191-4538
In stock
NSN: 5331-01-191-4538
FSC Code: 5331
MPN: 363226R1

5331-01-433-0977 (120039-5)

NIIN: 01-433-0977
In stock
NSN: 5331-01-433-0977
FSC Code: 5331
MPN: 1200395

5331-00-806-2433 (3630-4-11-70)

NIIN: 00-806-2433
In stock
NSN: 5331-00-806-2433
FSC Code: 5331
MPN: 363041170

5331-01-292-2436 (362796R1)

NIIN: 01-292-2436
In stock
NSN: 5331-01-292-2436
FSC Code: 5331
MPN: 362796R1