COGEGUM GFR/311-2 is a flame retardant, low smoke and halogen free crosslinkable compound curable by moisture and consists of a silane pregrafted base compound and a catalyst masterbatch (Sioplas method). 

In order to prevent prescorching the pregrafted compound and the catalyst masterbatch must be stored separately and mixed only when used.

Born for cable application has been discovered to be a good solution for heat shrinkable tubing application.