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 ... NSF, WRAS, DVGW, TSE Approved product. WRAS Approval number 1607539. Temperature range -50°C / +150°C. Specific Gravity 1.030 @22°C. Viscosity 7000 - 8000 cPs (@20 rpm) 22°C, Method: ISO 2555, Equipment: Brookfield RVT, spindle 3.