- Buyer's guide
American Highway Products Manhole Adjusting Rings
Manhole Adjusting Rings are installed under the utility casting on new construction or rehab of existing utilities.
They replace pre-cast concrete donuts or brick and mortar material. The Manhole Adjusting Ring is light weight and will not break. Freeze-thaw cycles do not affect it, providing a water tight seal that will last many years. Because the Manhole Adjusting Ring is made of solid rubber, it performs like a weight bearing pad on a bridge, eliminating vibration from traffic which deteriorates the cement substructure of the utility. Tapered sizes allow perfect adjustment to the roads crown or slope. 888.272.2397, www.ahp1.com