Mold Max® XLS® II is a Shore 30A tin-catalyzed silicone rubber that exhibits very low long-term shrinkage. XLS® II molds last longer than other silicones in production when casting chemically harsh resins such as epoxies and polyesters as well as urethane foams.
Mix ratio is 100A:10B by weight. Pot life is 40 minutes and cure time is 24 hours at room temperature. Mold Max® XLS® II can be thickened with THI-VEX® additive for brush-on applications.
Important: you must weigh Part A & B components using a gram scale to be successful with Mold Max® XLS II.