Mr. PEX brand PEX-Aluminum-PEX (PEX-Al-PEX) has an oxygen barrier and is most typically used in heating applications. However, Mr. PEX has also been approved for potable water and can be used in plumbing applications as well. So if you're looking for a sturdy PEX that holds the shape you bend it to in plumbing or heating applications, Mr. PEX could be just what you were looking for.
Mr. PEX, PEX Tubing, and PEX-al-PEX can be found at www.supplyhouse.com
