Plastic is a polymer that has a large molecular mass. The key difference between polycarbonate and plastic is that polycarbonates are lighter but much stronger than plastic. Also, another significant difference between polycarbonate and plastic is that the polycarbonate can be made thinner than plastic. Moreover, Polycarbonate is durable and ... Our custom cut-to-size clear polycarbonate sheets feature greater strength and flexibility than acrylic sheets at a lower cost. Let our experts match your exact specifications to deliver a product that offers high strength and transparency at a fraction of the weight of glass. I thought they were virtually the same, but no. On acrylic, it may stick to the edge of a sheet but not the face. On the face, it peels right off, the same as ordinary silicone. Can't even the Home Depot get this right ??? LEXAN is a trademark for polycarbonate plastic. Stock #5100, Silicone Sealant for plastic sheets and other plastics There are many applications where the benefits of polycarbonate sheet can be utilized to enhance architectural designs. It is suitable for both internal and external glazing applications. Available options include various transparent and translucent colors, and decorative finishes, and it can be shaped using various techniques. Polylite also offers polycarbonate twin wall sheet, polycarbonate solid sheet, polycarbonate embossed & corrugated, polycarbonate corrugated sheet, door and window awning, fiberglass skylight, basketball board system, alutech aluminum composite, true vision mounting technology, tv wall mount and tv ceiling mount.