This FFKM - FFPM O-Ring has a diameter of 50.52x1.78 mm and is White in color. The hardness of this O-ring 50,52x1,78 - FFKM - FFPM - F808W95 - FDA - EC1935/2004 - USP Class VI - 3A Sanitary - High Temp (>300°C) - 80 Shore A - White - ORS91517 is 80 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 -15 ºC to 300 ºC. O-Rings 671979 are referred to as 91517 and have a DIN 3771 size of 50.52x1.78. This item is equivalent to and has an FDA - EC1935/2004 - USP Class VI - 3A Sanitary - High Temp (>300°C) approval. The chemical name of this O-Ring is Perfluoroelastomer.