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Cross-linked polyethylene
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<p>Cross-linked polyethylene, commonly abbreviated PEX, XPE or XLPE, is a form of <a href="/facts/Polyethylene/LaaAf4cn">polyethylene</a> with <a href="/facts/Cross-links/zeQ9hEAA">cross-links</a>. It is used predominantly in building services pipework systems, hydronic radiant heating and cooling systems, domestic water piping, insulation for high tension (high voltage) electrical cables, and baby play mats. It is also used for natural gas and offshore oil applications, chemical transportation, and transportation of sewage and slurries. PEX is an alternative to <a href="/facts/Polyvinyl_chloride/9VkegJvr">polyvinyl chloride</a> (PVC), chlorinated polyvinyl chloride (CPVC) or copper tubing for use as residential water pipes. </p>