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A cross-linked polyethylene (PEX) pipe. Cross-linked polyethylene, commonly abbreviated PEX, XPE or XLPE, is a form of polyethylene with cross-links.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.
Plastic pipe is a tubular ... (polyethylene of raised temperature (RT)) PEX ... with a broad band of operating pressures. Max operating temperature is reported at 140 ...
For PEX reliability, installation procedures must be precise (especially at joints) and manufacturers specifications for a maximum temperature of water or fluid, etc. must be carefully followed. Design and installation
The high-temperature properties of the polymer are improved, its flow is reduced, and its chemical resistance is enhanced. PEX is used in some potable-water plumbing systems because tubes made of the material can be expanded to fit over a metal nipple and it will slowly return to its original shape, forming a permanent, water-tight connection.
Heat-shrink tubing (or, ... Polyolefin tubes, the most common kind, [8] have maximum continuous-use temperatures from -55 to 135 °C, and are used by the military ...
An even higher service temperature can be reached by linking of aromatics (e.g. phenyl) with oxygen (as diphenyl ether group e. g. PEEK), sulfur (as diphenyl sulfone groups in PES or diphenyl group, for example in PPS) or nitrogen (imide group in PEI or PAI). Resulting operating temperatures might be between 200 °C in the case of PES to 260 ...