Oatey 15620 Real Tuff Multi-Purpose Heavy Duty Pipe Sealant - Screw Cap with Brush 1/2 PT. (24 Pack) Since 1916, Oatey has been manufacturing quality products for the plumbing industry. Oatey's market-leading products include solvent cements for joining plastic pipe and fittings, vent stack roof flashings, solder and flux for joining copper pipe, washing machine outlet boxes, Sure-Vent® air admittance valves, residential and light commercial drains and other related plumbing specialty products. Oatey 15620 Real Tuff Multi-Purpose Heavy Duty Pipe Sealant - Screw Cap with Brush 1/2 PT. (24 Pack) Features: • Holds Tight Against Vibration, Expansion, & Contraction, Brushable • Non-Separating, Will Not Run Or Drip From Joints, Soft Set, No Cure Time Required, For Use On Metals, Including Galvanized Steel, Black Iron, Aluminum, Copper, Brass, Stainless Steel, & On PVC, CPVC, ABS, & Plastics."