A-4530-HCRA Silicone Gum Heat Cure HCR (High Consistency Rubber) 30 Shore A Durometer (HCRA 4530)

Elkem HCRA Platinum Silicone Gum High Consistency Rubber, by it's nature has the high physical properties. 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.

A two-roll mill is used for the blending process and coloring process.
Find our two roll mills here