This FFKM - FFPM O-Ring is 28.24 x 2.62mm and in the color Black. The Hardness of this O-ring 28.24x2.62 - FFKM - FFPM - F707Z94 - FDA - EC1935/2004 - USP Class VI - 3A Sanitary - 70 Shore A - Black - ORS221038 is 70 Shore A.The alternative names of the compound are FFKM – FFPM and they are mostly produced by . The O-ring is commonly used in and has an operating temperature range from -25 ºC to 270 ºC. O-rings 657945 are indicated as 221038 and have a DIN 3771 Size of 28.24 x 2.62. This item is equal to and has an FDA - EC1935/2004 - USP Class VI - 3A Sanitary Approval. The chemical name of this Oring is Perfluoroelastomer.