That Rapid Blue Pipe Thread Bonding provides a quick and easy solution to installing and repairing rigid copper tube systems for hot or cold drinking water and heating. Liquid PTFE Benefits: No need for flux No need for solder No need for heat Saves 70% time compared to soldering Saves on cost Extremely strong bond Conforms to The Water Supply (Water Fittings) Regulations 1999 Easy application No special tools required 100% leak-proof sealing solution for metal threaded joints - Very high setting speed even at cold Temperatures(<0�C) - Fixed parts can be disassembled by hand tools Suitable for metal-metal and plastic-metal Threaded connections Drinking water approval for quality water applications No dirt with its non-dripping formulation Keeps its sealing properties against shocks vibrations long after the application Close-fitting metal pipe threads where all kinds of water, oil, grease, and many chemicals pass Pressure vessels Air compressors Hydraulic systems and tanks Areas where resistance against vibration is required Suitable for Type H thick metal thread joints according to TSE EN 751-1 Standard. Drinking Water, Hot Water, Heating, Natural ... That Rapid Blue Stuff Anaerobic Sealant 50ml Bottle NSF, WRAS, DVGW, TSE Approved product