| http://www.w3.org/ns/prov#value | - This washer may be constructed of a suitable material such as nylon, Also, a similar washer 125 is positioned between the lower surface of the locking plate and the locking cap; and the locking cap when secured to the exposed lower end of the operating shaft seals against the lower surface of the locking plate and isolates the lower end of the operating shaft from the int
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