Polyethylene
Polyethylene or polythene (abbreviated PE; IUPAC name polyethene or poly(ethylene)) is the most common plastic. Many kinds of polyethylene are known, with most having the chemical formula (C2H4)n. PE is usually a mixture of similar polymers of ethylene with various values of n.
Application: Implantable products, sutures, surgical cables, orthopedic, and artificial tendons, catheter inner lining.