Machine Strapping Polypropylene strap is a tough and versatile general purpose strapping product used widely with hand tools, semi-automatic strapping machines and automatic strapping machines. It has good elasticity and efficient seal joints. Choosing consistently high quality polypropylene strap from PSL will maximise the operational efficiency of your strapping machines. PSL offers consistently reliable polypropylene strap at competitive prices to support the long-term operational reliability of our machines.