The HeatLink PEX products are constructed with a unique high density polyethylene and uses special additives to prevent thermal degradation at high temperatures and inhibit UV degradation. Tubing used for radiant floor heating systems may be coated with an optional oxygen diffusion barrier to assist with inhibiting corrosion. The HeatLink production facility has invested in state-of-the-art quality control systems that continuously monitor product quality in real time in addition to the strict quality control testing performed in the two in-house laboratories. Independent testing and certification agencies assure the high quality of the product and conformity to standard requirements as outlined by ASTM International, NSF International, and CSA International to name a few. HeatLink cross-linked polyethylene tubing exhibit important qualities: • Minimum bending radii of 6× the tubing diameter at 68°F (20°C) • Unique flexibility • Unique chemical resistance • UV resistance • Low friction coefficient • Excellent abrasion resistance • Very good resistance to heat • Long useful life • Low creep rates
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