PC 5310 Silane Methyltrimethoxysilane 1185-55-3 Power Chemical Crosslinking / Coupling / Curing Agents >> Silane Silicones (Si) SEALANT Methyltrimethoxysilane. Used as a crosslinking agent for room temperature cured silicone rubber. Methyltrimethoxysilane. Used as a crosslinking agent for room temperature cured silicone rubber.