Vulcanization is a chemical process that is used to convert natural rubber and some polydiene elastomers into cross-linked polymers. Sulfur is considered to be the most common vulcanizing agent. Being a homopolymer and can create long chains easily with the individual polymer molecules when heated with rubber.

Insoluble Sulfur is one of the most common rubber vulcanizing agents used by the tyre industries to harden the rubber and increase its longevity.  

The main purpose of using vulcanizing agents is to prevent the rubber from blooming. As, blooming in the finished products of rubber article can lead to contamination and reduce the life duration of rubber and its products. Companies like OCCL India are providing the widest range of high-grade insoluble sulfur.