Versatile And Dependable: Perfect For Indoor Or Outdoor Use, Epoxy & Adhesives, Plastic, Composite, Pvc, And More. Plastic Bonder Makes A Great Gap Filler And Dries Black In Color. Simple To Use: J-B Plasticbonder Has A 1:1 Mixing Ratio, Sets In 15 Minutes And Can Be Sanded After 30 Minutes.