Protective manhole, grade ring liners

Lok b


The two-piece Water-LOK telescopic liner system is engineered to protect the grade work area and pavement around manhole structures from water infiltration and chemical attack, particularly from bacteria and sewer gas. Self adjustability features allow the liners to compensate for grade movement after installation. Available in stock 24-in. and 30-in. sizes, Water-LOK can be used in new and rehabilitation projects and is compatible with all mechanical means for securing castings to structures. A-Lok Products Inc., Tullytown, Pa., 800/822-2565;