5/8" 300ft O2 Barrier HeatLink® UV Stabilized PEX-a Tubing

High molecular cross-linked polyethylene (PEX-a) with minimum bending radius of 6× the outside diameter at 68°F (20°C). Maximum operating temperature: 180°F @ 100 PSI (82°C @ 690 kPa). Covered by a twenty-five year manufacturer’s limited warranty. Comes with oxygen diffusion barrier which prevents oxygen from entering the heating system through the tubing wall.