SIB 1825.0 Bis[3-(triethoxylsilyl)propyl]tetrasulfide 40372-72-3 Gelest Catalysts / Accelerators / Vulcanizing agents Crosslinking / Coupling / Curing Agents Rubber - Elastomer (Chloroprene, Butyl …) ADHESIVE SEALANT Bis[3-(triethoxysilyl)propyl]tetrasulfide. Used as coupling agent and vulcanizing agent for rubbers. Bis[3-(triethoxysilyl)propyl]tetrasulfide. Used as coupling agent and vulcanizing agent for rubbers.