Airtight plugs for ducts for interior and exterior use



  • Ensures cables in ducts are sealed
  • Construction in adherence with standards: for airtight sealing in accordance with DIN 4108-7, SIA 180 and RE 2020
  • Simply insertion: press-out membrane creates a reliable seal with cable
  • Easy to work with: holes can be pre-formed with a nail or nozzle tip
  • Also suitable for several cables
  • Reliable air sealing to profiled pipes thanks to multiple lip sealing
  • Can be easily removed if a new cable is to be installed
  • Excellent values in hazardous substance testing, has been tested according to the ISO 16000 evaluation scheme

Areas of application

For the quick and lasting, secure airtight installation of cables in ducts. Conduit grommets (e.g. ROFLEX 20 or ROFLEX 20 multi) are available for the airtight connection of ducts to the vapour check and airtight membrane.

Technical specs

Main product component Thermoplastic elastomer (TPE)
Property Value Regulation
Colour Blue
Conduit outer diameter 40 mm ; 1.57"
Conduit inner diameter 31.5 mm ; 1.24"
Installation temperature > -10 °C ; 14 °F
Temperature resistance permanent -50 °C to 90 °C ; -58 °F to 194 °F
Storage Cool and dry