Projex has introduced the UGA external wall sleeve to seal around pipes already in situ. The sleeve is bolted to the outside of the wall around the in-situ pipe – leaving enough annular space to fit the Link-Seal system. The Link-Seal system is then installed between the new sleeve and the pipe, creating a water-tight penetration (which can be oil-resistant if needed). This new system can accommodate pipes up to 1,600 mm in diameter.
Traditionally it has been almost impossible to seal a pipe penetration that is already in place, unless there is sufficient annular space around the pipe to fit a link-seal mechanical seal system. As most existing pipe-through-wall or bund situations do not have enough annular space around the pipe, there has not been a workable solution other than unreliable mastic systems.