We measure the hardness of flexible mold rubbers from soft and flexible to hard and semi-rigid as well as using Shore D for hard rubbers and plastics.
BS EN ISO 868:2003 Plastic and ebonite - Determination of indentation hardness by means of a durometer (Shore Hardness)
ISO 7619 part 1:2010 Rubber, vulcanised or thermoplastic - Determination of indentation hardness - Part 1:Durometer method (shore hardness)
ASTM D2240 Standard Test Method for Rubber Property—Durometer Hardness