Large-diameter drain (sewer) pipes are joined by sliding the straight end of one pipe into a tight, under-sized gasket inside the enlarged “bell end” of the next pipe. (Each length of pipe has one straight and one bell end, so they can be joined end-to-end to cover great distances.) This specialized tool is used to push the pipes together: it takes a lot of force to penetrate the gasket, which then forms a tight, water-proof seal.
Location: Shelf 10
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