Low Shrinkage Tin Cure Liquid Silicone Rubber for Injection Molding HN-620 A/B is a two-component tin cure liquid silicone rubber with low shrinkage of ≤0.2% , engineered for injection molding and crafts making. Cured at room temperature with a 100:2 mixing ratio, it offers high tear strength and easy perfusion for detailed and durable molds. Key Features Low Shrinkage ≤0.2% - Precise reproduction of the finest and most complex details High Tear Strength - 19.8-24.3 kN/m for