SEM EnviroSolv GNS is a heavy duty and degreasing solvent which is ideal for the removal of heavy grease and wax deposits; crude oil and related sludges from receivers, heat exchangers, hydro-cyclones, pipe-work and storage tanks. Low volatility ensures good contact time allowing the removal of all deposits with no re-deposition and is safe to use on most types of metals and plastics. This product is non flammable and also has an excellent environmental profile.