Gardner Bender DS-130 Duct Seal Compound, 1 lb. Pug, No Size, Grey

Product Information

During a fire the NOFIRNO coating forms a ceramic protective shield creating a thermal barrier it will also prevent moisture from escaping from the mineral wool board. View below our complete ranges of Duct Sealing Products including cable transits to provide a watertight seal and defence against flood damage to low, medium and high voltage cable ducts with additional protection against harmful flammable gas migration and fire spread. Filoform have been sealing ducts for years and are based in a country famously below sea level, so where better to get a seal from? It might work to hold back water just long enough for the contractor who applied it to get off site and get paid. The picture opposite shows unsealed electrical ducting and void openings located at a waste water treatment (WTW) plant – the open cable ducts undermine the purpose of the nearby fire door and should be sealed using fire rated cable duct seals.

This quick choice now leads to nightmare maintenance and leak monitoring issues long terms which ends up costing far more than a proper duct seal system upfront would have cost.

However, duct sealing is usually one of the last stages of a major project so I perhaps understand why a poor choice is made to go with DIY expanding foam. This technology has now been successfully applied in more than 125,000 air duct systems, in residential and commercial buildings, all over the world. MD5’s resin can cope with small amounts of moisture in the duct or on the cables, but larger amounts of water will reduce the effectiveness.

The system is still used extensively across the utilities and construction sectors and uses our individual RISE split insert sleeves rather than the innovative NOFIRNO multi sleeves used in the NOFIRNO duct seal system. All CSD products have beenextensively tested, not only atBeele Engineering technical laboratoriesin the Netherlands, but also by independent experts. Following discussions, CSD Duct Seals were brought on board after providing a bespoke solution not only to a technical issue within the green cabinets, but a dramatic cost effective solution to Openreach. The combination of NOFIRNO Sealant and NOFIRNO coated mineral wool boards have been developed to provide a cost effective solution.

Their modules are inserted around cables or pipes in frames that are attached to a structure by welding, bolting, casting or core drilled holes for a smart, safe and easy solution. In addition CSD Duct Seals are also looking to provide training for all of Openreach installation personnel and are currently working together to provide another project solution. We were impressed with the flexibility of the RISE Duct Seal - the solution will be rolled out by Openreach UK wide. However, most expanding foams are made of poor quality polyurethane, not providing the needed properties for a sealant or adhesive. The revolutionary and patented AEROSEAL process was developed in the 1990s at the University of Berkeley/California.