Acrydeal Type S Caulk is a siliconised acrylic silicone/sealant that is typically used in Interior and exterior applications around doors, windows, trim, comer joints, tubs, etc. This caulk becomes tack free in about 10-30 minutes and the cure time is about 24 hours. Acrydeal remains permanently flexible when used to caulk/seal glass, fiberglass, metal, porcelain, marble, ceramic etc. This caulk is very durable and is considered high quality. I personally recommend this as I have used this product many times and have found it to be the best caulk out there on the market. 1 case = 24 Tubes.