Peroxide curing is widely used for curing silicone rubber. The implant is made of medical silicone unbreakable rubber. Pads are three-dimensional objects typically molded of silicone rubber. Polyurethane rubber is a more cost effective material to use in place of silicone. They may be made from latex, silicone, or natural rubber. They may be made of plastic, silicone, or rubber. The material combines some of the properties of rubber, silicone, and other elastic polymers. They are usually made of polyurethane or silicone. Manufacturers work to set industry tolerances when extruding, cutting or joining silicone rubber profiles. Chest tubes are commonly made from clear plastics like PVC and soft silicone. Another key improvement was to connect them to a short piece of silicone elastomer tubing. There are typically four classes of conformal coatings&colon; Acrylic, Urethane, Silicone, and Varnish. Silicones are often prepared from silicone resins via room temperature vulcanization. The tentacles were created out of a combination of silicone and urethane. The silicone compound consists of a hydrophobic silica dispersed in a silicone oil.