{"id":19285,"date":"2026-05-28T22:23:22","date_gmt":"2026-05-28T20:23:22","guid":{"rendered":"https:\/\/lindemannsilikon.de\/?page_id=19285"},"modified":"2026-05-28T22:23:22","modified_gmt":"2026-05-28T20:23:22","slug":"silikonkautschuk-en","status":"publish","type":"page","link":"https:\/\/lindemannsilikon.de\/en\/silikonkautschuk-en\/","title":{"rendered":"Silicone Rubber: Properties, Types and Industrial Applications"},"content":{"rendered":"\n
\"Silicone<\/figure>\n\n\n\n

Silicone rubber is a cross-linkable polysiloxane elastomer that remains permanently elastic at temperatures from -60 \u00b0C to +250 \u00b0C. Depending on the cross-linking system, a distinction is made between HTV (solid silicone), LSR (liquid silicone) and RTV (room-temperature vulcanizing). Lindemann processes all three types using extrusion, injection molding and calendering to manufacture hoses, profiles and molded parts.<\/p>\n\n\n\n

What is silicone rubber?<\/h2>\n\n\n\n

Silicone rubber (chemically correct: polysiloxane elastomer) is a synthetic material consisting of an inorganic Si-O-Si backbone with organic side groups, typically methyl (-CH₃) or vinyl (-CH=CH₂). The term “rubber” refers to the rubber-like, elastic behavior after cross-linking – not to a chemical relationship with natural rubber.<\/p>\n\n\n\n

Cross-linking is achieved using peroxides, platinum complexes or tin catalysts. Only after cross-linking does silicone rubber acquire its characteristic properties: high temperature resistance, elasticity well below the freezing point, UV and ozone resistance, and chemical inertness toward most acids and alkalis.<\/p>\n\n\n\n

Overview of silicone rubber types<\/h2>\n\n\n\n

Lindemann processes three main classes of silicone rubber, which differ in supply form, processing and properties:<\/p>\n\n\n\n

Type<\/th>Supply form<\/th>Processing<\/th>Application<\/th><\/tr><\/thead>
HTV (High Temperature Vulcanizing)<\/td>Solid silicone (kneadable compound)<\/td>Extrusion, compression molding, calendering at 150-200 \u00b0C<\/td>Hoses, profiles, seals in series production<\/td><\/tr>
LSR (Liquid Silicone Rubber)<\/td>2-component liquid<\/td>Injection molding at 180 \u00b0C in the heated tool<\/td>Micro-molded parts, medical components, complex geometries<\/td><\/tr>
RTV-1<\/td>1-component from cartridge<\/td>Cross-linking with atmospheric humidity at room temperature<\/td>Sealants, bonding, repair<\/td><\/tr>
RTV-2<\/td>2-component liquid<\/td>Cross-linking after mixing at room temperature<\/td>Mold making, prototyping, electronic potting<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

Properties of silicone rubber<\/h2>\n\n\n\n

The most important physical and chemical properties of silicone rubber make it one of the most versatile elastomers in industrial use:<\/p>\n\n\n\n