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This 5/8 inch x 1200 foot 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.