Easy 1:1 volume mixing simplifies preparation and reduces errors
Low viscosity formula enables smooth flow and easy demolding
Heat resistance up to 450°F (232°C) allows casting of low temperature melt metal alloys
Tear-resistant, strong rubber resists long-term shrinkage for durable molds
Compatible with wax, gypsum, and other casting materials for broad application
Summarized by Shop
Mold Star™ mold rubbers are easy to use platinum silicones which are mixed 1A:1B by volume (no weighing scale necessary). Mold Star™ silicones feature relatively low viscosities and vacuum degassing is not required for most applications. The pot life of Mold Star™ 15SLOW is 50 minutes and cure time is 4 hours at room temperature. Mold S
Mix Ratio
1A:1B by volume
Pot Life
Mold Star 15 Slow 50 minutes, Mold Star 16 Fast 6 minutes
Cure Time
Mold Star 15 Slow 4 hours, Mold Star 16 Fast 30 minutes
Shore Hardness
Mold Star 30 30A
Heat Resistance
Up to 450°F (232°C)
Suitable Materials
Rubber, Metal, Wax, Gypsum, Low Temperature Melt Metal Alloys