This FFKM - FFPM - Kalrez O-Ring is mm and in the color Black. The Hardness of this O-ring 34x1.78 - FFKM - FFPM - Hot Water / Steam (330ºC) - Kalrez 1050LF - 75 Shore A - Black - ORS842311 (Equivalent) is 75 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 330 ºC. O-rings 842311 are indicated as 232037 and have a DIN 3771 Size of . This item is equal to and has an Hot water / Steam (330ºC) Approval. The chemical name of this Oring is Perfluoroelastomer.