Silicone paste used as an external leak sealer and jointing compound. It is worth noting that the new Fernox Ls-X External Leak Sealer from Fernox is considerably more efficient than any bought 10 years ago, as they tend to decrease in efficiency over this period of time. This means that following the installation of your new Fernox LS-X External Leak Sealer your running costs should decrease dramatically.
External leak sealer and jointing compound combined (wras approved product)
Ideal for use on compression joints and srewed fittings