This FFKM - FFPM - Kalrez O-Ring is mm and in the color White. The Hardness of this O-ring 4x1 - FFKM - FFPM - Conform FDA - (300°C) - 80 Shore A - White - ORS667696 (Equivalent) is 80 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 -15 ºC to 300 ºC. O-rings 667696 are indicated as 227430 and have a DIN 3771 Size of . This item is equal to and has an Conform FDA - (300°C) Approval. The chemical name of this Oring is Perfluoroelastomer.