BONDERITE C-AK 4215 NC-LT AERO BONDERITE C-AK 4215 NC-LT, metal pre-treatment BONDERITE® C-AK 4215 NC-LT is a white granular mix developed for cleaning ferrous and nonferrous alloys by spray, immersion and ultrasonic methods at low temperatures. BONDERITE C-AK 4215 NC-LT is ideal forcleaning fuel and hydraulic components and for cleaning metals prior to metal bonding.BONDERITE C-AK 4215 NC-LT contains a balanced blend of organic surface-active agents designed to control any tendencies to foam, even under conditions of severe agitation. A characteristic of this designed foam control is that, at elevated temperatures (above about 40°C), one of the surface active agents will become less soluble, separate and float to the top of the cleaning solution. This is a normal operating characteristic of this product. The oily-looking layer that floats on top of the solution at operating temperature is then, one of the active ingredients and should not be skimmed. BONDERITE C-AK 4215 NC-LT is ideal for cleaning fuel and hydraulic components and for cleaning metals prior to metal bonding.