3M(TM) Scotch-Weld(TM) Instant Adhesive CA40 is a low viscosity, very fast-setting instant adhesive for rubbers and elastomers. 3M(TM) Scotch-Weld(TM) Instant Adhesive CA40 has good adhesion to many diificult to bond substrates, such as EPDM rubber, aluminum, and flexible vinyls. Also bonds to most cured rubbers and plastics.