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Buna-N O-Rings  –  3/16 - 1/4"

O-Ring, Buna-N

O-rings are circular sealing rings that have a round cross section and look the letter "O." Used in a variety of axial, radial static and dynamic applications, they are available in several different materials: Buna-N and Viton® are two that are very common. Buna-N is popular because of its low cost, physical properties and resistance to certain chemicals and has an operating temperature range of -40° to +250°F. Viton® offers extended resistance to petroleum oils at high operating temperatures; its operating range is -15° to +400°F. A common durometer (hardness) rating for Buna-N is 70 and the base rating for Viton® is 75. O-ring size is typically specified as inside diameter (ID) and cross section (CS) diameter, which is also referred to as width. (Listed by increasing cross section and inside diameter.)

Code Product Qty. Package Qty. Carton Add to Basket
RN147-1012 3/4" ID x 1 1/8" OD x 3/16" CS Buna-N O-Ring, 70 Durometer
RN147-2012 1 1/8" ID x 1 1/2" OD x 3/16" CS Buna-N O-Ring, 70 Durometer
RN162-9223 1 3/16" ID x 1 9/16" OD x 3/16" CS Buna-N O-Ring, 70 Durometer
RN162-0223 1 1/4" ID x 1 5/8" OD x 3/16" CS Buna-N O-Ring, 70 Durometer
RN162-1223 1 5/16" ID x 1 11/16" OD x 3/16" CS Buna-N O-Ring, 70 Durometer
RN191-6902 1 3/8" ID x 1 3/4" OD x 3/16" CS Buna-N O-Ring, 70 Durometer
RN147-3012 1 1/2" ID x 1 7/8" OD x 3/16" CS Buna-N O-Ring, 70 Durometer
RN147-4022 1 5/8" ID x 2" OD x 3/16" CS Buna-N O-Ring, 70 Durometer
RN147-5022 1 3/4" ID x 2 1/8" OD x 3/16" CS Buna-N O-Ring, 70 Durometer
RN147-6022 1 7/8" ID x 2 1/4" OD x 3/16" CS Buna-N O-Ring, 70 Durometer
RN147-7022 2" ID x 2 3/8" OD x 3/16" CS Buna-N O-Ring, 70 Durometer
RN147-8022 2 1/8" ID x 2 1/2" OD x 3/16" CS Buna-N O-Ring, 70 Durometer
RN147-9022 2 1/4" ID x 2 5/8" OD x 3/16" CS Buna-N O-Ring, 70 Durometer
RN147-0022 2 3/8" ID x 2 3/4" OD x 3/16" CS Buna-N O-Ring, 70 Durometer
RN147-1022 2 1/2" ID x 2 7/8" OD x 3/16" CS Buna-N O-Ring, 70 Durometer
RN147-2022 2 5/8" ID x 3" OD x 3/16" CS Buna-N O-Ring, 70 Durometer
RN147-3022 2 3/4" ID x 3 1/8" OD x 3/16" CS Buna-N O-Ring, 70 Durometer
RN157-5032 2 7/8" ID x 3 1/4" OD x 3/16" CS Buna-N O-Ring, 70 Durometer
RN157-6032 3" ID x 3 3/8" OD x 3/16" CS Buna-N O-Ring, 70 Durometer
RN157-7032 3 1/8" ID x 3 1/2" OD x 3/16" CS Buna-N O-Ring, 70 Durometer
RN157-8032 3 1/4" ID x 3 5/8" OD x 3/16" CS Buna-N O-Ring, 70 Durometer
RN157-9032 3 3/8" ID x 3 3/4" OD x 3/16" CS Buna-N O-Ring, 70 Durometer
RN157-0032 3 1/2" ID x 3 7/8" OD x 3/16" CS Buna-N O-Ring, 70 Durometer
RN157-1032 3 5/8" ID x 4" OD x 3/16" CS Buna-N O-Ring, 70 Durometer
RN157-2032 3 3/4" ID x 4 1/8" OD x 3/16" CS Buna-N O-Ring, 70 Durometer