This FFKM - FFPM O-Ring has a diameter of  mm and is Black in color. The hardness of this O-ring 79x3 - FFKM - FFPM - F757ZHC - Steam - High Temp. (+340°C) - 75 Shore A - Black - ORS232780 is 75. Alternative names for the compound are FFKM – FFPM, and it is commonly produced by Kalrez® | Simriz® | Chemraz® | Perlast® | Isolast® | Parofluor®. The O-Ring is typically used in and has an operating temperature range from -20 ºC to 250 ºC. O-Rings 918599 are referred to as 232780 and have a DIN 3771 size of . This item is equivalent to and has an Stoom - Hoge Temp. (+340°C) approval. The chemical name of this O-Ring is Perfluorcarbonrubber / Perfluoroelastomeer.