This FFKM - FFPM O-Ring has a diameter of 40.8 x 3.5 mm and is Black in color. The hardness of this O-ring 40.8x3.5 - FFKM - FFPM - F606Z94 - 60 Shore A - Black - ORS188533 is 60 Shore A. Alternative names for the compound are FFKM – FFPM, and it is commonly produced by . The O-Ring is typically used in and has an operating temperature range from -25 ºC to 270 ºC. O-Rings 633838 are referred to as 188533 and have a DIN 3771 size of 40.8 x 3.5. This item is equivalent to and has an approval. The chemical name of this O-Ring is Perfluoroelastomer.