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OneSeal Multi-fit Pipe and Cable Penetration Seals

Thermakraft OneSeal Multi-fit Pipe and Cable penetration seals are part of the Thermakraft OneWrap membrane system.

They are a patented, airtight solution for round or rectangular pipes, cables or conduits when passing through underlay barriers.

OneSeal Multi-fit Pipe and Cable Seals are simple to install, highly adhesive and completely airtight.

Remove the guesswork and be sure that you’ll always have the right size for the job.

Pipe Seals

Four pre-notched rings for pipes sized from 15mm to 110mm diameter.

Cable Seals

1 x conduit – 55mm to 80mm diameter;


2 x cables – 10mm to 22mm diameter; and

4 x cables – 7mm to 10mm diameter.

Key Features

  • BRANZ appraised
  • Strong Adhesion
  • UV stabilised
  • Strong and Durable


  •  Patented solution compatible with any building membrane.
  •  Part of the Thermakraft One Wrap System. 
  •  Easy to install - no need for special tools, glue or tapes.  
  •  Highly adhesive for complete air and water tightness.
  •  OneSeal pre-notched seals ensure you have the correct size every time.  
  •  Pipe seals accommodate Ø15 to Ø 110mm pipes or conduits.
  •  Cable seals accommodate Ø7 to Ø22mm cables and conduits and Ø80mm trunking.
  •  Once installed pipes and cables can be adjusted.
  •  Temperature resistance -40°C to +80°C.