HCR Silicones also have the benefit of being dimensionally stable with very low to no shrinkage. Since it is a gum rubber you can actually sculpt your piece directly into the silicone itself. HCR’s also bond well to most substrates making it a great laminate, it also has a long 6 hour working time in an optimal 65°F work space. HCR silicones must be heated to reach full cure.
Parts A & B are a series of two-part platinum-catalyzed silicone elastomers. Each elastomer is supplied as a two-part kit (Part A & Part B), equal portions of which must be thoroughly blended together prior to use with a 2 roll mill.