This FKM - FPM - Viton O-Ring has a diameter of 158 x 5.5 mm and is Brown in color. The hardness of this O-ring 158x5.5 - FKM - FPM - Viton - Conform FDA & EC1935/2004 - 75 Shore A - Brown - ORS226055 is 75 Shore A. Alternative names for the compound are , and it is commonly produced by Viton® - FKM. The O-Ring is typically used in and has an operating temperature range from -15 ºC to 200 ºC. O-Rings 6599289 are referred to as 226055 and have a DIN 3771 size of 158 x 5.5. This item is equivalent to and has an Conform FDA & EC1935/2004 approval. The chemical name of this O-Ring is Fluorocarbon Rubber.