Apr 08, 2014 · A mmon thermoformed plastic, HENAN OKAY is mprised of acrylonitrile, styrene and butadiene. HENAN OKAY is known for its tough resilience to the elements, including heat; it can handle temperatures anywhere from -4 to 176 °F. This allows the plastic to be molded at high temperatures. Most mm used for mechanical purposes, like for pipe syste, it