From the largest international candle making shops to home hobbyists, Reynolds carries both urethane and silicone mold rubbers used to make custom molds for casting wax. Using mold rubber to make a candle mold offers you many possibilities not possible with rigid candle molds. Silicone rubber can withstand very high temperatures and is very flexible, while urethane rubber offers a cost-effective solution for production wax casting. Both materials perform very well for repeated cycling of molds.