FIELD: aerosol devices. SUBSTANCE: proposed mounting unit has mounting cover and collar gasket fitted initially on considerable part of mounting cover skirt. Collar gasket has axial height and radial thickness of 2.032-3.81 mm and 0.762-1.542 mm, respectively. Preferable sizes are from 2.286 to 3.556 mm and from 0.889 to 1.397 mm, respectively. The best sizes are from 2.54 to 3.302 mm and from 1.016 to 1.27 mm, respectively. Method provides for shifting the collar gasket of indicated sizes along section of mounting cover skirt. Shifting of gasket is stopped when considerable part of gasket is arranged on mounting cover skirt. EFFECT: reduced cost of aerosol bottles. 18 cl, 20 dwg
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