This EPDM O-Ring has a diameter of 40.5x5.3 mm and is Black in color. The hardness of this O-ring 40.5x5.3 - EPDM - Peroxide - FDA - EC1935/2004 - NSF 61 - 70 Shore A - Black - ORS172410 is 70. 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 -50 ºC to 150 ºC. O-Rings 1302245 are referred to as 172410 and have a DIN 3771 size of 40.5x5.3. This item is equivalent to and has an FDA - EC1935/2004 - NSF 61 approval. The chemical name of this O-Ring is Ethylene propylene diene monomer.