This FFKM - FFPM O-Ring is 62 x 3.5mm and in the color Black. The Hardness of this O-ring 62x3,5 FFKM - FFPM - FDA - USP Class VI - 3A Sanitary - Kalrez 6320 - 70 Shore A - Black - ORS183470 (Equivilent) is 70 Shore A.The alternative names of the compound are FFPM – Dupont Kalrez and they are mostly produced by Kalrez® - Simriz® - Chemraz® - Spectrum® - Triazinico® - Isolast® - Parofluor® - Fluorez® - Perlast® - Perfluor®. The O-ring is commonly used in and has an operating temperature range from -25 ºC to 270 ºC. O-rings 660015 are indicated as 183470 and have a DIN 3771 Size of 62 x 3.5. This item is equal to =CONCATENATE(W535,", ",AA535) and has an FDA - USP Class VI - 3A Sanitary Approval. The chemical name of this Oring is Perfluoroelastomer.