P.T.F.E tape used by plumbers and heating engineers to provide a watertight seal on threaded joints. This invaluable tape is an essential component when working on all types of pipework. Helping to ensure that a watertight seal is achieved and maintained on all threaded joints, this effective tape is a must for every toolbox. Length: 12m Width: 12mm Thickness: 0.1mm Main purpose: gas systems. Suitable for water and heating systems.