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2. Cross-linked polyethylene - Wikipedia

   en.wikipedia.org/wiki/Cross-linked_polyethylene

   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.

3. List of electronic component packaging types - Wikipedia

   en.wikipedia.org/wiki/List_of_electronic...

   For example, a metric 2520 component is 2.5 mm by 2.0 mm which corresponds roughly to 0.10 inches by 0.08 inches (hence, imperial size is 1008). Exceptions occur for imperial in the two smallest rectangular passive sizes. The metric codes still represent the dimensions in mm, even though the imperial size codes are no longer aligned.

4. List of RF connector types - Wikipedia

   en.wikipedia.org/wiki/List_of_RF_connector_types

   Hirose U.FL connector; aka Amphenol AMC, I-PEX MHF I, UMCC, Sunridge MCB; Hirose W.FL connector; aka Amphenol AMMC, I-PEX MHF3, Sunridge MCD; I-PEX MHF 4 connector; aka Murata HSC; IMP connector; Mini-SMB connector This is a 75 Ohm RF connector which provides broadband capability through 2 GHz. Its snap-on design offers a quick connect/disconnect.

5. IEC 60309 - Wikipedia

   en.wikipedia.org/wiki/IEC_60309

   IEC 60309 (formerly IEC 309 and CEE 17, also published by CENELEC as EN 60309) is a series of international standards from the International Electrotechnical Commission (IEC) for "plugs, socket-outlets and couplers for industrial purposes".

6. Plastic pipework - Wikipedia

   en.wikipedia.org/wiki/Plastic_pipework

   Two variants are HDPE pipe (high-density polyethylene) [8] and the more heat resistant PEX (cross-linked polyethylene, also XLPE). PE has been used for pipes since the early 1950s. PE pipes are made by extrusion in a variety of sizes dimensions. PE is lightweight, flexible and easy to weld.

7. Twist-on wire connector - Wikipedia

   en.wikipedia.org/wiki/Twist-on_wire_connector

   Twist-on wire connectors are a type of electrical connector used to fasten two or more low-voltage (or extra-low-voltage) electrical conductors. They are widely used in North America and several European countries in residential, commercial and industrial building power wiring, but have been banned in some other jurisdictions.