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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.)

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Code Product Qty. Package Qty. Carton  
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
RN157-3032 3 7/8" ID x 4 1/4" OD x 3/16" CS Buna-N O-Ring, 70 Durometer
RN157-4042 4" ID x 4 3/8" OD x 3/16" CS Buna-N O-Ring, 70 Durometer
RN162-2223 4 1/8" ID x 4 1/2" OD x 3/16" CS Buna-N O-Ring, 70 Durometer
RN130-0312 4 1/4" ID x 4 5/8" OD x 3/16" CS Buna-N O-Ring, 70 Durometer
RN172-4233 4 3/8" ID x 4 3/4" OD x 3/16" CS Buna-N O-Ring, 70 Durometer
RN172-5233 4 1/2" ID x 4 7/8" OD x 3/16" CS Buna-N O-Ring, 70 Durometer
RN172-6233 4 5/8" ID x 5" OD x 3/16" CS Buna-N O-Ring, 70 Durometer
RN172-7233 4 3/4" ID x 5 1/8" OD x 3/16" CS Buna-N O-Ring, 70 Durometer
RN102-8723 4 7/8" ID x 5 1/4" OD x 3/16" CS Buna-N O-Ring, 70 Durometer
RN172-8233 5" ID x 5 3/8" OD x 3/16" CS Buna-N O-Ring, 70 Durometer
RN172-9233 5 1/8" ID x 5 1/2" OD x 3/16" CS Buna-N O-Ring, 70 Durometer
RN172-0233 5 1/4" ID x 5 5/8" OD x 3/16" CS Buna-N O-Ring, 70 Durometer
RN172-1233 5 3/8" ID x 5 3/4" OD x 3/16" CS Buna-N O-Ring, 70 Durometer
RN172-2233 5 1/2" ID x 5 7/8" OD x 3/16" CS Buna-N O-Ring, 70 Durometer
RN172-3233 5 5/8" ID x 6" OD x 3/16" CS Buna-N O-Ring, 70 Durometer
RN172-4243 5 3/4" ID x 6 1/8" OD x 3/16" CS Buna-N O-Ring, 70 Durometer
RN172-5243 5 7/8" ID x 6 1/4" OD x 3/16" CS Buna-N O-Ring, 70 Durometer
RN172-6243 6" ID x 6 3/8" OD x 3/16" CS Buna-N O-Ring, 70 Durometer
RN157-5042 3 5/8" ID x 4 1/8" OD x 1/4" CS Buna-N O-Ring, 70 Durometer
RN172-7243 4 1/2" ID x 5" OD x 1/4" CS Buna-N O-Ring, 70 Durometer
RN172-8243 4 5/8" ID x 5 1/8" OD x 1/4" CS Buna-N O-Ring, 70 Durometer
RN172-9243 4 3/4" ID x 5 1/4" OD x 1/4" CS Buna-N O-Ring, 70 Durometer
RN172-0243 4 7/8" ID x 5 3/8" OD x 1/4" CS Buna-N O-Ring, 70 Durometer
RN172-1243 5" ID x 5 1/2" OD x 1/4" CS Buna-N O-Ring, 70 Durometer
RN172-2243 5 1/8" ID x 5 5/8" OD x 1/4" CS Buna-N O-Ring, 70 Durometer
RN172-3243 5 1/4" ID x 5 3/4" OD x 1/4" CS Buna-N O-Ring, 70 Durometer
RN172-4253 5 3/8" ID x 5 7/8" OD x 1/4" CS Buna-N O-Ring, 70 Durometer
RN172-5253 5 1/2" ID x 6" OD x 1/4" CS Buna-N O-Ring, 70 Durometer
RN172-6253 5 5/8" ID x 6 1/8" OD x 1/4" CS Buna-N O-Ring, 70 Durometer
RN172-7253 5 3/4" ID x 6 1/4" OD x 1/4" CS Buna-N O-Ring, 70 Durometer
RN172-8253 5 7/8" ID x 6 3/8" OD x 1/4" CS Buna-N O-Ring, 70 Durometer