Gas Tight Caps

The GTC range of gas tight caps is designed to fit on top of large diameter vertical wells and telescopic shafts to prevent the escape of landfill gas to the atmosphere.

The comprise a flexible coupler which is fitted at the top with a heavy duty thick polyethylene disc and with various ports for gas extraction, leachate depth measurement and leachate extraction using pneumatic pumps.



  • Landfill gas extraction systems


  • Wide range of sizes
  • Landfill gas resistant materials
  • Fits all telescopic wells
  • Simple construction
  • Easy to install & adjust
  • Multi-sampling ports