ICON Technologies Holding Tank Adhesive uses pulverized ABS polymers to make a strong adhesive for gluing all your fittings to your holding tank. This adhesive can also be used to repair minor cracks in your existing holding tank. NOTE: Blend 1 to 2 parts of pulverized ABS polymers with 1 part acetone. Adjust for desired consistency. Can also be used to repair minor cracks in your existing holding tank Blend 1 or 2 parts of pulverized ABS polymers with 1 part acetone | Icon Technologies Holding Tank Adhesive, 1 lb, Black