This FKM - FPM - Viton O-Ring has a diameter of 56.74x2.01 mm and is Brown in color. The hardness of this O-ring 56.74x2.01 - FKM - FPM - Viton - 75 Shore A - Brown - ORS205951 is 75 Shore A. Alternative names for the compound are Viton® - FKM, and it is commonly produced by Viton® - Du Pont - 3M - Solvay - Daikin. The O-Ring is typically used in and has an operating temperature range from -15 ºC to 200 ºC. O-Rings 328679 are referred to as 205951 and have a DIN 3771 size of 56.74x2.01. This item is equivalent to and has an approval. The chemical name of this O-Ring is Fluorocarbon Rubber.