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Made for gas and water: conforms to BS EN 751-1 for 1st, 2nd and 3rd family gases, the jointing compound standard BS 6891 requires on UK domestic gas pipework WRAS Approved for potable water: approval 2305553 covers hot and cold water services up to 85°C once fully cured for 24 hours at 23°C Medium strength and removable: cures hard to lock and seal the joint yet still comes apart with standard hand tools, so fittings can be repositioned or serviced later Wide working range: seals threaded metal joints in brass, steel and stainless from -50°C to +150°C and fills thread gaps up to 0.20 mm Quick to handle: grips brass in under 30 seconds and steel in two to four minutes, reaching functional strength in one to three hours at 22°C Cleaner than tape or hemp: a thixotropic liquid applied straight from the nozzle that resists run-off, so there are no loose fibres or trailing tape ends to trim Built for real systems: oil resistant once cured, for threaded metal joints on natural gas, LPG, central heating and hot and cold water pipework