Polypropylene (PP) is a plastic polymer, tough and lightweight with low water absorption and often chosen for its resistance to corrosion and excellent chemical resistance. Polypropylene offers an excellent combination of mechanical, physical, thermal and electrical properties compared to other plastics. This low cost plastic is often compared to high density polyethylene (HDPE), although it has lower impact strength, Polypropylene has superior tensile strength and working temperature. Polypropylene provides outstanding resistance to organic solvents, degreasing agents and electrolytic attack. This material is resilience against most forms of physical damage, including impact and freezing.