This EPDM O-Ring has a diameter of 42.5x3.5 mm and is Black in color. The hardness of this O-ring 42.5x3.5 - EPDM - 70 Shore A - Black - Sulphur - ORS203524 is 70 Shore A. Alternative names for the compound are , and it is commonly produced by Dow Chemical - ExxonMobil - and Lion Elastomers. The O-Ring is typically used in and has an operating temperature range from -45 ºC to 130 ºC. O-Rings 243118 are referred to as 203524 and have a DIN 3771 size of 42.5x3.5. This item is equivalent to and has an None approval. The chemical name of this O-Ring is Ethylene propylene diene monomer.