Below is a list of Acrylic Tube manufacturers from San Diego, California. Acrylic tubing is a plastic tubing variety. Any substance described as acrylic is formed by a complex process that involves the mixture of pure acrylic acid with other substances in order to form acrylic resins. Acrylic resins can be thermoformed, or molded by heat, into usable plastic products like tubing. Most thermoformed acrylic resins are near-transparent, which makes them ideal for creating clear tubing.