Profile: Witt & Son UK specializes in anti vibration mounts, motor slida bases and motor slide rails. We also offer a range of inertia bases, acoustic enclosures, enclosed metal & rubber isolators and silencers. The isolators consist of a machine made bottom cup spot welded to a base plate, pre-punched for holding down bolts, and, fitted into the cup, steel helical springs mounted on a neoprene high frequency vibration isolation pad. The springs would be held at the top by a pressure plate leveled by a set-screw operating through a tapped insert in the machine made top cup. The top cup would be jig formed to its base to enclose a neoprene snubbing ring to ensure lateral stability.