... resistance 2.No drying out or embrittlensess TOP BEST-668 Automotive gap-filling butyl sealantUsed in the car tunk,door frame ... or embrittlensessUV resistanceSolvent-freeEnvironmental friendly2,Application areaGasket, gap-filling for automotive doors, windows, inside and outside panels, etc.3,Technique ... sealant. 7,StorageStorage temperature: 0°C-40°C,12months. Automotive gap-filling butyl sealant