Protective lubricant NGM-ML is used for processing hidden cavities. The hidden cavities of new cars are treated with this material. Protective film coating NG-216B is used to cover parts of the car under the body. Anti-noise bituminous mastic BPM-1 is used to protect the underbody from corrosion and to reduce noise. Coating thickness 1.0–1.5 mm.
Plastisol D-11A is used to protect the bottom of the body from corrosion, from abrasive wear and for noise insulation. Coating thickness 1.0–1.2 mm. Plastisol D-11A treated the bottoms of new cars. Plastisol D-4A is used for sealing welds. Non-drying mastic 51-G-7 is used to seal body joints. In the internal cavities, the anti-corrosion agent is applied by air and airless spraying. Air spraying requires compressed air with a pressure of 0.5–0.8 MPa, a paint spray gun with a reservoir, hoses and gun extensions. The best coating quality is achieved with airless spraying at a pressure of 4–12 MPa, which allows spraying materials of significant viscosity.