SikaFlex 220+ is a quick curing, flexible high performance polyurethane based adhesive for bonding windshields to vehicle body shells. The windshield adhesive chemical reaction starts as soon as the adhesive is extruded or the cartridge is opened. It's initial strength come to life from its high viscosity during the application process. Sikaflex 220+ cures to form a high-grade elastomer and possesses outstanding working characteristics and non-sag properties that grab and hold the glass while the curing process takes place. Its fast rate of cure results in rapid strength development and shorter service times. In order to ensure that manufacturer's standards are met, make sure to use a very good glass cleaner such as CRL PWR22 and a pinchweld primer such as CRL 1214006 during your windshield adhesive pre-application process.