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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.

5331-01-192-6477 (30-781-1005-56)

NIIN: 01-192-6477
In stock
NSN: 5331-01-192-6477
FSC Code: 5331
MPN: 30781100556

5331-01-192-5537 (30-781-1172-56)

NIIN: 01-192-5537
In stock
NSN: 5331-01-192-5537
FSC Code: 5331
MPN: 30781117256

5331-01-190-0293 (30-781-1020-94)

NIIN: 01-190-0293
In stock
NSN: 5331-01-190-0293
FSC Code: 5331
MPN: 30781102094

5331-01-054-2377 (30-781-1015-86)

NIIN: 01-054-2377
In stock
NSN: 5331-01-054-2377
FSC Code: 5331
MPN: 30781101586

5331-01-192-3744 (30-781-110-50)

NIIN: 01-192-3744
In stock
NSN: 5331-01-192-3744
FSC Code: 5331
MPN: 3078111050

5331-01-135-6746 (307679-28)

NIIN: 01-135-6746
In stock
NSN: 5331-01-135-6746
FSC Code: 5331
MPN: 30767928

5331-01-313-0251 (3074925M1)

NIIN: 01-313-0251
In stock
NSN: 5331-01-313-0251
FSC Code: 5331
MPN: 3074925M1

5331-01-053-1944 (30751331-503)

NIIN: 01-053-1944
In stock
NSN: 5331-01-053-1944
FSC Code: 5331
MPN: 30751331503

5331-01-314-4796 (3074931M1)

NIIN: 01-314-4796
In stock
NSN: 5331-01-314-4796
FSC Code: 5331
MPN: 3074931M1

5331-01-350-5342 (102-5-00808)

NIIN: 01-350-5342
In stock
NSN: 5331-01-350-5342
FSC Code: 5331
MPN: 102500808

5331-01-312-9932 (3073522M1)

NIIN: 01-312-9932
In stock
NSN: 5331-01-312-9932
FSC Code: 5331
MPN: 3073522M1

5331-01-314-0815 (3073523M1)

NIIN: 01-314-0815
In stock
NSN: 5331-01-314-0815
FSC Code: 5331
MPN: 3073523M1

5331-01-273-6865 (3071-105)

NIIN: 01-273-6865
In stock
NSN: 5331-01-273-6865
FSC Code: 5331
MPN: 3071105

5331-01-292-4011 (30683189-001)

NIIN: 01-292-4011
In stock
NSN: 5331-01-292-4011
FSC Code: 5331
MPN: 30683189001

5331-01-299-9321 (306360-001)

NIIN: 01-299-9321
In stock
NSN: 5331-01-299-9321
FSC Code: 5331
MPN: 306360001

5331-01-526-0339 (102-246-1109)

NIIN: 01-526-0339
In stock
NSN: 5331-01-526-0339
FSC Code: 5331
MPN: 1022461109

5331-01-095-6238 (306-197)

NIIN: 01-095-6238
In stock
NSN: 5331-01-095-6238
FSC Code: 5331
MPN: 306197

5331-00-579-6497 (3061207R1)

NIIN: 00-579-6497
In stock
NSN: 5331-00-579-6497
FSC Code: 5331
MPN: 3061207R1

5331-01-311-9332 (3061207R1)

NIIN: 01-311-9332
In stock
NSN: 5331-01-311-9332
FSC Code: 5331
MPN: 3061207R1

5331-01-571-9711 (102-2078)

NIIN: 01-571-9711
In stock
NSN: 5331-01-571-9711
FSC Code: 5331
MPN: 1022078

5331-01-463-4547 (CD1021-017-N-0001)

NIIN: 01-463-4547
In stock
NSN: 5331-01-463-4547
FSC Code: 5331
MPN: CD1021017N0001

5331-01-453-1201 (1021ITEM8)

NIIN: 01-453-1201
In stock
NSN: 5331-01-453-1201
FSC Code: 5331
MPN: 1021ITEM8

5331-01-342-2541 (102-13)

NIIN: 01-342-2541
In stock
NSN: 5331-01-342-2541
FSC Code: 5331
MPN: 10213

5331-01-374-8930 (3-908E515-80)

NIIN: 01-374-8930
In stock
NSN: 5331-01-374-8930
FSC Code: 5331
MPN: 3908E51580

5331-01-431-7566 (102103-55520)

NIIN: 01-431-7566
In stock
NSN: 5331-01-431-7566
FSC Code: 5331
MPN: 10210355520

5331-01-524-8131 (102-0695-1109)

NIIN: 01-524-8131
In stock
NSN: 5331-01-524-8131
FSC Code: 5331
MPN: 10206951109

5331-00-904-0837 (305448PS)

NIIN: 00-904-0837
In stock
NSN: 5331-00-904-0837
FSC Code: 5331
MPN: 305448PS

5331-01-200-0445 (30542-1)

NIIN: 01-200-0445
In stock
NSN: 5331-01-200-0445
FSC Code: 5331
MPN: 305421

5331-01-455-9812 (102-026-29)

NIIN: 01-455-9812
In stock
NSN: 5331-01-455-9812
FSC Code: 5331
MPN: 10202629

5331-01-456-2691 (102-026-34)

NIIN: 01-456-2691
In stock
NSN: 5331-01-456-2691
FSC Code: 5331
MPN: 10202634

5331-01-455-9818 (102-026-36)

NIIN: 01-455-9818
In stock
NSN: 5331-01-455-9818
FSC Code: 5331
MPN: 10202636

5331-01-456-2688 (102-026-23)

NIIN: 01-456-2688
In stock
NSN: 5331-01-456-2688
FSC Code: 5331
MPN: 10202623

5331-01-456-2694 (102-026-33)

NIIN: 01-456-2694
In stock
NSN: 5331-01-456-2694
FSC Code: 5331
MPN: 10202633

5331-01-340-4654 (1-020-205-02)

NIIN: 01-340-4654
In stock
NSN: 5331-01-340-4654
FSC Code: 5331
MPN: 102020502

5331-01-456-2682 (102-026-02)

NIIN: 01-456-2682
In stock
NSN: 5331-01-456-2682
FSC Code: 5331
MPN: 10202602

5331-01-059-5433 (3052-118)

NIIN: 01-059-5433
In stock
NSN: 5331-01-059-5433
FSC Code: 5331
MPN: 3052118

5331-01-504-6916 (101W937U01)

NIIN: 01-504-6916
In stock
NSN: 5331-01-504-6916
FSC Code: 5331
MPN: 101W937U01

5331-01-417-0037 (101W921U01)

NIIN: 01-417-0037
In stock
NSN: 5331-01-417-0037
FSC Code: 5331
MPN: 101W921U01

5331-01-359-8774 (101W807U01)

NIIN: 01-359-8774
In stock
NSN: 5331-01-359-8774
FSC Code: 5331
MPN: 101W807U01

5331-01-359-8775 (101W810U01)

NIIN: 01-359-8775
In stock
NSN: 5331-01-359-8775
FSC Code: 5331
MPN: 101W810U01

5331-99-801-6625 (BSM1806-111)

NIIN: 99-801-6625
In stock
NSN: 5331-99-801-6625
FSC Code: 5331
MPN: BSM1806111

5331-00-138-0617 (305050-165)

NIIN: 00-138-0617
In stock
NSN: 5331-00-138-0617
FSC Code: 5331
MPN: 305050165

5331-00-116-7888 (305000-6)

NIIN: 00-116-7888
In stock
NSN: 5331-00-116-7888
FSC Code: 5331
MPN: 3050006

5331-01-562-7718 (101C709U01)

NIIN: 01-562-7718
In stock
NSN: 5331-01-562-7718
FSC Code: 5331
MPN: 101C709U01

5331-00-138-9530 (305000-5)

NIIN: 00-138-9530
In stock
NSN: 5331-00-138-9530
FSC Code: 5331
MPN: 3050005

5331-00-181-4927 (305000-16)

NIIN: 00-181-4927
In stock
NSN: 5331-00-181-4927
FSC Code: 5331
MPN: 30500016

5331-00-460-0725 (305000-2)

NIIN: 00-460-0725
In stock
NSN: 5331-00-460-0725
FSC Code: 5331
MPN: 3050002

5331-00-939-9579 (305000-12)

NIIN: 00-939-9579
In stock
NSN: 5331-00-939-9579
FSC Code: 5331
MPN: 30500012