This FKM - FPM - Viton O-Ring is 28.3 x 1.78mm and in the color Brown. The Hardness of this O-ring 28.3x1.78 - FKM - FPM - Viton - FDA - EC1935/2004 - 3A Sanitary - 75 Shore A - Brown - ORS200433 is 75 Shore A.The alternative names of the compound are Viton� - FKM and they are mostly produced by Viton� - Du Pont - 3M - Solvay - Daikin. The O-ring is commonly used in and has an operating temperature range from -15 ºC to 200 ºC. O-rings 1331057 are indicated as 200433 and have a DIN 3771 Size of 28.3 x 1.78. This item is equal to and has an FDA - EC1935/2004 - 3A Sanitary Approval. The chemical name of this Oring is Fluorocarbon Rubber.