Engine Seal

Class [1]
Chemical Products

Goods - Sodium Silicates:Chemical Products for the manufacture of sealants:chemical products and preparations for use in sealants. http://catalog.miniscience.com/Catalog/Sodium_Silicate/Default.html Sodium Silicate or water glass used to stop the leak Introduction: Many automotive engines may lose their coolant by any one of several means. It may have a blown head gasket, a warped head, a cracked block, a leaking freeze plug, a heating core leak, a radiator leak or a lost pet cock. The engine will overheat rapidly as the coolant disappears. Additionally, coolant within the crankcase leads to rapid corrosion and coolant within a cylinder prevents ignition. For all of these reasons, coolant leaks must be repaired. Repairing these sources of leaks may be quite expensive. That's why cooling system sealants based on sodium silicate or watergalss have been marketed with the objective of stopping the leak without incurring the substantial expense of automotive repairs. http://mistralni.co.uk/products/sodium-silicate-solution-q70 Specification Synonyms: Sodium trisilicate solution; Water glass; Silicic acid, sodium salt; sodium hydroxy(oxo)si­lanolate; acide silicique, sel de sodium; Kieselsaure, Natriumsalz; CAS No: 1344-09-8 EC No: 215-687-4 Formula: Na2Si3O7 Viscosity: 70-100cPs (20C) Density: 1.38 g/cm3 (40 Be) pH: approx 11.3 Solubility: completely miscible in water Automotive repair Sodium silicate can be used to seal leaks at the head gasket. Rather than pull the head, a jar of "liquid glass" is poured into the radiator and allowed to circulate. The Waterglass is injected via the radiator water into the hotspot at the motor. This technique works because at 93 C the sodium silicate loses water molecules to form a very powerful sealant that will not re-melt below 815 C. This approach is often used by disreputable used-car salespersons to disguise a leaking head gasket. A sodium silicate repair of a leaking head gasket can hold for up to two years and even longer in some cases. The effect will be almost instant, and steam from the radiator water will stop coming out the exhaust within minutes of application. This repair only works with water to cylinder or water to Air applications and where the sodium silicate reaches the "conversion" temperature of 93 C.