The Parson Stainless Steel Manhole Insert is manufactured from 18-gauge 304 stainless steel and has been proven effective in reducing or preventing surface water inflow to the collection system through the manhole lid. Parson Stainless Steel Manhole Inserts are a practical solution to expensive plant expansions, new construction moratoriums or high sewage treatment costs.
The gasket is manufactured from closed-cell neoprene material and is attached by a pressure-sensitive adhesive to the weight-bearing surface of the dish.
-Dramatically reduces sewage treatment costs
-No maintenance required
-Keeps grit, sand, salt, chemical spills, foreign objects, road oils, etc. from entering the collection system