Cast iron manhole cover ELASTIK®

squarerectangular

AN ABSOLUTE NOVELTY . The manhole buffer with square or rectangular sooner or later ‘ dancing ‘ for the simple reason that a plane passing through three points only . Even the manhole to circular passage fitted with polyethylene gasket and elastic bars may give rise to such problems because the seal will wear and loses its function and is rarely replaced . To make stable and silent manhole covers with square pad and / or rectangular easiest thing to do was : - securing the cover to the frame with three elastic bars in correspondence of three points opposites; - prepare suitable wedges guiding and locking of the lid to the frame .