Hot Vulcanizable Addition Crosslinkable Silicone Rubbers

Hot vulcanizable silicone rubber can also be cros.slinked by a hydrosilation reaction. Advantage no decomposition products of the organic peroxides 

Hot vulcanizable silicone rubbers can be processed in two different ways either by extrusion to tubing or cables or by molding to so-called molded articles, such as, for example, crankshaft seals and membranes. High viscosity hot vulcanizable silicone rubber is exclusively used for extrusion articles, extruders typically used in the rubber industry being employed in their processing. 

Molded articles, which are conventionally manufactured in presses with high viscosity rubber, have been recently manufactured in automatic injection molding machines using liquid silicone rubber, which enables the mass production of silicone rubber components with short cycle times. 

Silicone rubber tubes are mainly utilized in medical and food technology e.g. as transfusion tubes, catheters and tubes for drinks. Silicone cables are widely utilized in applications for which thermal stability, weathering resistance and chemical resistance are required e.g. baking ovens, hot lamps and electrical connections for electrical motors and transformers. 

Molded silicone rubber articles are generally utilized as seals for equipment running at high temperatures e.g. as crankshaft seals in internal combustion engines or for headlight and gearbox seals. 

---