| http://www.w3.org/ns/prov#value | - As with the housing 12 itself, bottom support 122 may be constructed of a variety of materials including metals and their alloys, low grade steel, and stainless steels, super-alloys like Incolloy, Inconel and Hastelloy, engineering plastics and high temperature plastics, ceramics such as silicon carbide and silicon nitride, glass, quartz, Teflon polymer, nylon, and low temperature plastics such as
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