PRO-RING Advantages

  • PRO-RING™ is made from expanded polypropylene (EPP), a high strength, energy absorbing plastic
  • PRO-RING™ meets or exceeds AASHTO HS-25 load requirements.
  • PRO-RING™ meets or exceeds material properties per ASTM D4189-13
  • PRO-RING™ meets or exceeds the requirements of ASTM C1244 (vacuum test)
  • PRO-RING™ meets or exceeds the requirements of ASTM C969 (exfiltration test)
  • PRO-RING™ has excellent chemical resistance
  • PRO-RING™ has excellent UV resistance
  • PRO-RING™ is not damaged or compromised when in direct contact to 285º F HMA
  • PRO-RING™ is approximately 1/20th the weight of concrete grade rings, making it very easy to handle and install
  • PRO-RING™ minimizes the risk of injury due to its light weight
  • PRO-RING™ does not require any special or heavy equipment for handling, installation or shipping
  • PRO-RING™ will not fracture during transportation or be damaged if dropped
  • PRO-RING™ is easily drilled in the field for bold down or anchoring applications
  • PRO-RING™ has no stacking height limitations
  • PRO-RING™ is available in a variety of round, square and rectangular shapes
  • PRO-RING™  is available in a variety of thicknesses from ¾” to 6” as well as tapered rings
  • PRO-RING™ has a 50 year design life and is backed by a 25 year material warranty