Craft Liquid Silicone Rubber RTV2 Room Temperature Silicone

High tear-resistant liquid silicone rubber, RTV2 industrial-grade mold silicone, specialized for resin molding, available for wholesale. Contact 13662816580 for inquiries (same number for WeChat).

Condensation-type liquid mold silicone: typically in a ratio of 100:2 to 100:5 (meaning 100 parts of silicone base to 2-5 parts of curing agent). The curing principle involves cross-linking and solidification through a condensation reaction.

Room temperature curing: Under room temperature conditions (around 25°C), addition-type silicone usually has an initial surface drying time of 10-30 minutes, with full curing potentially taking 3-8 hours. Condensation-type silicone has a slightly faster surface drying time, approximately 5-15 minutes, with full curing taking 2-6 hours. However, curing time can be influenced by environmental temperature, humidity, and the amount of silicone used. Higher temperatures and smaller amounts generally result in faster curing.

High-quality liquid mold silicone typically has a shrinkage rate controlled within a few thousandths, such as 0.1% to 0.5%. This ensures that molds produced can replicate product dimensions with high precision, with minimal size changes after demolding. This is crucial for mold making of precision components and electronic product casings that require high dimensional accuracy.