Castrol Aquasafe 21 rust is a medium viscosity mineral oil containing film formers and coupling agents. This product concentrate diluted with water after use. == == Advantages solvent-free, in line with EC Solvent Directive ( 1999/13 / EC) does not contain heavy metals, such as barium liquid rust temperature of 80 ℃ remained stable even after the increase in pollution treatment processes may also play a role, such as the subsequent heat treatment or electroplating process. Good wettability == Product Applications == Castrol Aquasafe 21 is an anti-rust solution for emulsion diluted mid-process rust using this product in the aqueous phase to form a thin volatile oily film on the surface .Aquasafe21 particularly recommended rustproof metal workpiece after processing other aqueous solutions. The best piece dipped dried using this product, the appropriate temperature for 50-60 ℃, if this method is not feasible, use low-pressure thermal spray or cold spray on the workpiece using .