This EPDM O-Ring has a diameter of 56.5 x 3.5 mm and is Black in color. The hardness of this O-ring 56.5x3.5 - EPDM- 70 Shore A - Black - PEROX - FDA - ORS188165 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 -50 ºC to 150 ºC. O-Rings 1303497 are referred to as 188165 and have a DIN 3771 size of 56.5 x 3.5. This item is equivalent to and has an FDA 21 CFR 177.2600 - EC1935/2005 approval. The chemical name of this O-Ring is Ethylene propylene diene monomer.