MC4+ Rapide isn’t just powerful – it’s fast too. The high concentration guarantees a strong seal. Because it flows around the entire system, it gets to work even in tough to reach places. And with its quick-dose bottle design, 20 seconds is all it takes to add it to the system. Technical Specifications Physical and chemical properties Appearance: Viscous emulsion Colour: White/Off-white Odour: Slight Solubility: Dispersible in water pH (concentrated solution): 7.0 Density: 1.06 g/cm³ Environmental Non-hazardous Non-toxic Biodegradable Quality EN 9001 & ISO 14001 Installer Benefits High performance leak sealer Reduces pressure loss on sealed systems No blocked pumps, valves or air vents Suitable for all heating systems Quick-dose bottle for speedier injection – takes as little as 20 seconds Versatile dosing options – via the radiator, air vent or boiler Available in 300ml bottle