This oxygen barrier PERT tubing is used for radiant floor heating, snow melting applications and supply and return piping. It is a durable and flexible raised temperature polyethylene tubing that enables higher burst strengths, higher anti-oxidant protection and provides excellent flow characteristics. This tubing is manufactured to ASTM F877, F1807 or F2159 standards and conforms to ASTM F2623. The dimensions are 5/8 in by 500 feet in length.