Polypropylene (PP) is a thermoplastic polymer. Polypropylene is a tough rigid material. Polypropylene has a high melting point (320 degrees) compared to other plastics. The chemical and water resistance of Polypropylene make it an ideal choice for laboratory components and enclosures. Polyproplene can be saw cut, drilled, machined and welded. OCIP has a massive inventory of Polypropylene sheets and rod.