Sealing is ensured by the use of rubber seals, adhesives, sealing mastics, rubber plugs that close technological openings, and careful fitting of mating parts. When removing and installing seals with metal frames, do not allow the frame to collapse and the formation of corrugations on the seals. Welded seams do not provide complete tightness of the joints of parts, and if moisture gets between the welded parts, corrosion centers appear there. Welded seams are sealed from moisture and dirt ingress with D-4A plastisol. After replacing individual parts of the body, coat the welds on both sides with D-4A plastisol and apply non-drying mastic type 51-G-7 into the corner joints and gaps.