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® 20T is a translucent rubber 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 recommended with Mold Star® 15, 16 or 30 silicone rubbers.
Product Name: A:B Mix Ratio Demold Time Elongation at Break Mixed Viscosity Pot Life Shore A Hardness Tear Strength Weight: CU.IN./LB
Mold Star® 15 1:1 by volume 4 hours 440% 12500 cps 50 min. 15 88 pli 23.5
Mold Star® 16 1:1 by volume 30 min. 440% 12500 cps 6 min. 16 88 pli 23.5
Mold Star® 20T 1:1 by volume 30 min. 470% 11,000 cps 6 min. 20 90 pli 25.6
Mold Star® 30 1:1 by volume 6 hours 339% 12500 cps 45 min. 30 88 pli 24.7