Worldwide distributor of NSN parts and consumables located in the USA.
A cylindrical or ball-shaped item fabricated of solid rubber, having a hole running through its center through which a threaded stem is inserted. A wing nut, two washers and the stem are supplied to apply pressure, thereby expanding the ball and plugging up inlet and outlet opening in radiators. It is used to locate leaks in the core or tank of a radiator and the like.
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