PreMark® Manhole Protection Rings
- Subtle incline that provides smooth, damage-free ride for daily traffic
- Each ring is made of durable non-beaded 125 mil Preformed Thermoplastic
- As many as three Preformed Thermoplastic rings can be combined to negotiate severe grade changes
- Requires no minimum air or road temperature
PreMark® Manhole Protection Rings
- Subtle incline that provides smooth, damage-free ride for daily traffic
- Each ring is made of durable non-beaded 125 mil Preformed Thermoplastic
- As many as three Preformed Thermoplastic rings can be combined to negotiate severe grade changes
- Requires no minimum air or road temperature
The PreMark® Preformed Thermoplastic Manhole Protection Ring Systems are designed with a subtle incline that provides smooth, damage-free ride for daily traffic. Each ring is made of durable non-beaded 125 mil. PreMark® preformed thermoplastic material. As many as three Preformed Thermoplastic rings can be combined to negotiate severe grade changes.
A kit consists of 3 rings with the same inside diameter but a different outside diameter so a height difference from 1/8” to 3/8” can be adjusted by using one, two, or three rings. PreMark® Preformed Thermoplastic Manhole Protection Rings are available in a variety of diameters and come in grey or black. PreMark® is applied using the Flint2000EX or Magnum Heat Torch.