This EPDM O-Ring has a diameter of 20x1 mm and is Black in color. The hardness of this O-ring 20x1 - EPDM - Superior - FDA - EC1935/2004 - USP Class VI - 3A Sanitary - 70 Shore A - Black - ORS221201 is 70. Alternative names for the compound are , and it is commonly produced by Keltan® | Nordel® | Vistalon® | Dutral® | Buna EP® | Mitsui EPT® | Kumho Polychem EP® | JSR EP® | Royalene®. The O-Ring is typically used in and has an operating temperature range from -55 ºC to 150 ºC. O-Rings 6589344 are referred to as 221201 and have a DIN 3771 size of 20x1. This item is equivalent to and has an FDA - EC1935/2004 - USP Class VI - 3A Sanitary approval. The chemical name of this O-Ring is Ethylene Porpylene Diene Monomer.