


Smooth-On Mold Star 31T Translucent Silicone Rubber - Trial Unit (2 lb)
Mold Star™ 31T is a fast, translucent platinum silicone for making molds. With a 5-minute pot life and about a 23-minute cure, you can pour and demold in under half an hour, and you can see through it to cut parts out cleanly. Tear resistant with very low shrinkage, heat resistant to 450°F (232°C).
Specs:
- Mix ratio: 1A:1B by weight or volume
- Pot life: 5 minutes
- Cure time: 23 minutes
- Shore hardness: 30A
- Mixed viscosity: 11,000 cps
- Color: Translucent
Won't cure against sulfur-based modeling clays; test first if you're not sure.
Trial unit: 2 lb total (1 lb Part A + 1 lb Part B), about 52 cubic inches of rubber. Color it with Silc Pig™ pigments.
Use in a well-ventilated area and wear vinyl gloves (latex gloves stop platinum silicone from curing). Store and use at room temperature (73°F / 23°C). Packaging may vary.
Roasted, ground and sealed to order. Nothing sits on a shelf.
Choose options
Roasted, ground and sealed to order. Nothing sits on a shelf.