Categories | Wickes Internal Leak Sealer £8.12 Internally seals inaccessible leaks and weeping joints. Avoids costly repairs reduces pressure loss in sealed systems. Will not cause blockages in pumps air vents etc Check stock and priceWickes Internal Leak SealerWickes Internal Leak Sealer on other UK sitesWickes Internal Leak Sealer on other UK sitesWickes Internal Leak Sealer on USA sitesWickes Internal Leak Sealer on USA sites | Brands |