Mold Star® 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 15 SLOW is 50 minutes and cure time is 4 hours at room temperature.
Mold Star 16 FAST is a faster material with a 6 minute pot life and 30 minute cure time.
Mold Star 30 is a harder material, with a 30A Shore hardness.Mold Star silicones cure to soft, strong rubbers which are tear resistant and exhibit very low long term shrinkage.
Molds made with Mold Star will last a long time in your mold library and are good for casting wax, gypsum, resins, concrete and other materials. Cured Mold Star rubber is heat resistant up to 450°F (232°C) and is suitable for casting low-temperature melt metal alloys.
Note: THI-VEX® is NOT compatible with Mold Star rubbers.