This FKM - FPM - Viton O-Ring has a diameter of 15.6x1.78 mm and is Black in color. The hardness of this X-ring 15.6x1.78 - FKM - FPM - Viton - 70 Shore A - Black - ORS193082 is 70 Shore A. Alternative names for the compound are Fluorocarbon Rubber, and it is commonly produced by . The O-Ring is typically used in and has an operating temperature range from -20 ºC to 205 ºC. O-Rings 63939 are referred to as 193082 and have a DIN 3771 size of 15.6x1.78. This item is equivalent to and has an approval. The chemical name of this O-Ring is Acrylonitrile butadiene rubber.