This FKM - FPM - Viton O-Ring has a diameter of 37.47 x 3 mm and is Brown in color. The hardness of this O-ring 37.47x3 - FKM - FPM - Viton - FDA - EC1935/2004 - 3A Sanitary - 75 Shore A - Brown - ORS200549 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 1331177 are referred to as 200549 and have a DIN 3771 size of 37.47 x 3. This item is equivalent to and has an FDA - EC1935/2004 - 3A Sanitary approval. The chemical name of this O-Ring is Fluorocarbon Rubber.