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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.

5331-01-450-9680 (RM-0271-16)

NIIN: 01-450-9680
In stock
NSN: 5331-01-450-9680
FSC Code: 5331
MPN: RM027116

5331-01-449-5195 (RM-0795-30)

NIIN: 01-449-5195
In stock
NSN: 5331-01-449-5195
FSC Code: 5331
MPN: RM079530

5331-01-450-9683 (RM-0576-24)

NIIN: 01-450-9683
In stock
NSN: 5331-01-450-9683
FSC Code: 5331
MPN: RM057624

5331-25-150-3669 (RM0156-24)

NIIN: 25-150-3669
In stock
NSN: 5331-25-150-3669
FSC Code: 5331
MPN: RM015624

5331-01-449-5190 (RM-0495-30)

NIIN: 01-449-5190
In stock
NSN: 5331-01-449-5190
FSC Code: 5331
MPN: RM049530

5331-01-451-5919 (RM-0476-24)

NIIN: 01-451-5919
In stock
NSN: 5331-01-451-5919
FSC Code: 5331
MPN: RM047624

5331-01-450-9682 (RM-0376-24)

NIIN: 01-450-9682
In stock
NSN: 5331-01-450-9682
FSC Code: 5331
MPN: RM037624

5331-01-451-1732 (RM-0345-30)

NIIN: 01-451-1732
In stock
NSN: 5331-01-451-1732
FSC Code: 5331
MPN: RM034530

5331-25-150-3263 (RM-0325-30)

NIIN: 25-150-3263
In stock
NSN: 5331-25-150-3263
FSC Code: 5331
MPN: RM032530

5331-01-453-3662 (RM-0321-16)

NIIN: 01-453-3662
In stock
NSN: 5331-01-453-3662
FSC Code: 5331
MPN: RM032116

5331-01-454-4773 (RM-0265-30)

NIIN: 01-454-4773
In stock
NSN: 5331-01-454-4773
FSC Code: 5331
MPN: RM026530

5331-01-451-5906 (RM-0091-16)

NIIN: 01-451-5906
In stock
NSN: 5331-01-451-5906
FSC Code: 5331
MPN: RM009116

5331-01-449-5183 (RM-0221-16)

NIIN: 01-449-5183
In stock
NSN: 5331-01-449-5183
FSC Code: 5331
MPN: RM022116

5331-01-449-5186 (RM-0225-30)

NIIN: 01-449-5186
In stock
NSN: 5331-01-449-5186
FSC Code: 5331
MPN: RM022530

5331-01-450-9681 (RM-0316-24)

NIIN: 01-450-9681
In stock
NSN: 5331-01-450-9681
FSC Code: 5331
MPN: RM031624

5331-01-449-5188 (RM-0151-16)

NIIN: 01-449-5188
In stock
NSN: 5331-01-449-5188
FSC Code: 5331
MPN: RM015116

5331-01-449-5181 (RM-0171-16)

NIIN: 01-449-5181
In stock
NSN: 5331-01-449-5181
FSC Code: 5331
MPN: RM017116

5331-01-451-1731 (RM-0121-16)

NIIN: 01-451-1731
In stock
NSN: 5331-01-451-1731
FSC Code: 5331
MPN: RM012116

5331-01-450-4485 (RM-0116-24)

NIIN: 01-450-4485
In stock
NSN: 5331-01-450-4485
FSC Code: 5331
MPN: RM011624

5331-01-454-4774 (RM-0061-16)

NIIN: 01-454-4774
In stock
NSN: 5331-01-454-4774
FSC Code: 5331
MPN: RM006116

5331-01-424-7837 (RK21365)

NIIN: 01-424-7837
In stock
NSN: 5331-01-424-7837
FSC Code: 5331
MPN: RK21365

5331-01-424-7839 (RK22191)

NIIN: 01-424-7839
In stock
NSN: 5331-01-424-7839
FSC Code: 5331
MPN: RK22191

5331-01-358-8206 (RGT032343)

NIIN: 01-358-8206
In stock
NSN: 5331-01-358-8206
FSC Code: 5331
MPN: RGT032343

5331-01-358-5433 (RGTC326001)

NIIN: 01-358-5433
In stock
NSN: 5331-01-358-5433
FSC Code: 5331
MPN: RGTC326001

5331-01-440-8201 (RF110)

NIIN: 01-440-8201
In stock
NSN: 5331-01-440-8201
FSC Code: 5331
MPN: RF110

5331-01-481-8288 (RE64290)

NIIN: 01-481-8288
In stock
NSN: 5331-01-481-8288
FSC Code: 5331
MPN: RE64290

5331-01-549-9639 (RE504827)

NIIN: 01-549-9639
In stock
NSN: 5331-01-549-9639
FSC Code: 5331
MPN: RE504827

5331-01-552-9816 (RE500001)

NIIN: 01-552-9816
In stock
NSN: 5331-01-552-9816
FSC Code: 5331
MPN: RE500001

5331-01-474-7820 (RE16142)

NIIN: 01-474-7820
In stock
NSN: 5331-01-474-7820
FSC Code: 5331
MPN: RE16142

5331-01-559-4353 (RD-5-11944-0)

NIIN: 01-559-4353
In stock
NSN: 5331-01-559-4353
FSC Code: 5331
MPN: RD5119440

5331-01-520-7242 (RD-5-4057-0)

NIIN: 01-520-7242
In stock
NSN: 5331-01-520-7242
FSC Code: 5331
MPN: RD540570

5331-01-560-0886 (RD-5-11017)

NIIN: 01-560-0886
In stock
NSN: 5331-01-560-0886
FSC Code: 5331
MPN: RD511017

5331-01-532-1471 (RD-5-4017-011)

NIIN: 01-532-1471
In stock
NSN: 5331-01-532-1471
FSC Code: 5331
MPN: RD54017011

5331-01-524-7872 (RD-5-11017-0P)

NIIN: 01-524-7872
In stock
NSN: 5331-01-524-7872
FSC Code: 5331
MPN: RD5110170P

5331-01-524-9812 (RD-5-11016-0M)

NIIN: 01-524-9812
In stock
NSN: 5331-01-524-9812
FSC Code: 5331
MPN: RD5110160M

5331-01-559-2154 (RD-5-11015)

NIIN: 01-559-2154
In stock
NSN: 5331-01-559-2154
FSC Code: 5331
MPN: RD511015

5331-01-533-0281 (RD-5-11017-0)

NIIN: 01-533-0281
In stock
NSN: 5331-01-533-0281
FSC Code: 5331
MPN: RD5110170

5331-01-557-1933 (RD-5-11015-0)

NIIN: 01-557-1933
In stock
NSN: 5331-01-557-1933
FSC Code: 5331
MPN: RD5110150

5331-01-533-0282 (RD-5-11016-0)

NIIN: 01-533-0282
In stock
NSN: 5331-01-533-0282
FSC Code: 5331
MPN: RD5110160

5331-01-553-4094 (RD-5-10942-0M)

NIIN: 01-553-4094
In stock
NSN: 5331-01-553-4094
FSC Code: 5331
MPN: RD5109420M

5331-01-412-8074 (YB-3202-17)

NIIN: 01-412-8074
In stock
NSN: 5331-01-412-8074
FSC Code: 5331
MPN: YB320217

5331-01-559-5371 (RB1079)

NIIN: 01-559-5371
In stock
NSN: 5331-01-559-5371
FSC Code: 5331
MPN: RB1079

5331-01-559-5369 (RB1078)

NIIN: 01-559-5369
In stock
NSN: 5331-01-559-5369
FSC Code: 5331
MPN: RB1078

5331-01-457-4734 (RA10025-98)

NIIN: 01-457-4734
In stock
NSN: 5331-01-457-4734
FSC Code: 5331
MPN: RA1002598

5331-01-474-7644 (R99052)

NIIN: 01-474-7644
In stock
NSN: 5331-01-474-7644
FSC Code: 5331
MPN: R99052

5331-01-474-7647 (R99693)

NIIN: 01-474-7647
In stock
NSN: 5331-01-474-7647
FSC Code: 5331
MPN: R99693

5331-01-531-2502 (R97877)

NIIN: 01-531-2502
In stock
NSN: 5331-01-531-2502
FSC Code: 5331
MPN: R97877

5331-01-571-8494 (R93633)

NIIN: 01-571-8494
In stock
NSN: 5331-01-571-8494
FSC Code: 5331
MPN: R93633