This FFKM - FFPM O-Ring is 149x5.33mm and in the color Black. The Hardness of this O-ring 149x5.33 - FFKM - FFPM - Low Temp - Kalrez 3018 - 75 Shore A - Black - ORS233106 (Equivalent) is 90 Shore A.The alternative names of the compound are FFPM – Dupont Kalrez and they are mostly produced by Chemraz® - Simriz® - Kalrez® - Spectrum - Triazinico - Isolast® - Parofluor® - Fluorez - Perlast® - HPSealing® - Perfluor® - Polymax. The O-ring is commonly used in and has an operating temperature range from -30 ºC to 260 ºC. O-rings 959965 are indicated as 233106 and have a DIN 3771 Size of 149x5.33. This item is equal to Dupont Kalrez 3018, Greene Tweed Chemraz 510 & Chemraz 600 and has an None Approval. The chemical name of this Oring is Perfluoroelastomer.