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Liquid Injection Molded silicone elastomers represent a processing alternative to heat-cured silicone elastomers used in traditional compression molding processes. Higher injection speeds, cure speeds, and complex mold filling by Liquid Injection Molded materials offer rubber fabricators productivity gains that more than offset higher initial material and investment costs. However, the wide-spread acceptance of Liquid Injection Molded products in the automotive industry has been limited from a performance standpoint; up until now, Liquid Injection Molded products have not reached the level of underhood performance of heat-cured silicone elastomers in terms of heat age, compression set, and oil stability. We describe 2 breakthroughs in Liquid Injection Molded technology that will lead to much wider industry acceptance.