The Filoform duct sealing system FiloSeal+HD uses our MD+ sealant which is easily applied from a standard skeleton gun. The high quality, one component, flexible sealant “MD+” is based on a silicon compound that cures with air (Humidity). Ductwork flanged connections, slip joints, seams and fixings can all leak, making it almost impossible to find and seal all leakage points on a large installed system.

The MDII system is suitable in situations where more than one cable or pipe is in the duct. The opening of the duct does not need to be completely round. The Filoform duct sealing system FiloSeal+ uses our MD+ sealant which is easily applied from a standard skeleton gun. The high quality, one component, flexible sealant “MD+” is based on a silicon compound that cures with air (Humidity).Duct sealing system FiloSeal+ is a universal solution for sealing cables and pipes in ducts or bore holes. Once the application is complete and set, Aeroseal sealant is able to withstand 2000Pa of pressure with an estimated lifetime of over 30 years (provided ductwork is not dismantled or cleaned with oxidising chemicals). If there is room and the cables are de-energized, a power tool to speed the process up could be used. Once the seal is broken from the cable, there may be a crust of resin still present on the cable; this is due to the excellent adhesion our resin has. The hardest part of removing this seal is the crust that forms when the resin soaks into the foam flange. Safety Tyco RDSS Rayflate inflatable duct seal consists of an inflatable bladder with a sealing strip which is fitted around the power cable in a duct and inflated to create a watertight seal and is very versatile, adapting to most configurations independent of duct ovality.

Flexible – the sealing system can be employed to seal circular, round or rectangular ducts or building penetrations MD5 Duct Sealing System Vs DIY Expanding Foam The use of expanding foam in construction & mainatenance projects in all industries has increased over time, but it faces major problems when applied wrong, or designed into a project where the foam specs doesnt match the requirements of the project. In this BLOG, we'll cover the reasons why expanding foam fails when sealing cable ducts and what you can do about it. All our duct sealing systems are specified and used by major Electrical, Gas, & Water Utility companies in the UK and Benelux countries.Are you not convinced yet to use our MD5 Duct Sealing system instead of DIY Expanding PU foam from a can? If not, please read the test data below, performed by ourselves. You won't find a single manufacturer of expanding foams in a can with the same test data for sealing cables in a duct.