Sikaflex primers are special materials formulated to improve the bond of Sikaflex urethane sealants when applied to specific substrates.
Sikaflex® Primer-449 is formulated to improve the bond of Sikaflex urethane sealants when applied to porous substrates.
Sika® Duoflex 5050 Primer is a two component, low viscosity, adhesion-promoting, epoxy primer for use with Sika