PET STRAP, PET STRAPPING is a modern alternative to steel strapping. This strapping is ideal for all your heavier duty applications as it is twice as strong as polypropylene strapping. Extruded polyester strapping also comes with three times more on a reel than steel strapping making this a great value alternative. Choose from a range of manual tools for usewith serrated seals, or use one of our friction welding tools to create the most secure seal. This extruded polyester strapping can also be used with strapping machines, thanks to the cardboard core.