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Lascaux 303 HV is a water dispersion of butyl methacrylate copolymer and thickened with butyl polyacrylate. 303 HV is the replacment for the discontinued 360 HV formulation. Like 360 HV, 303 HV is able to be thinned in water, but is not reusable or dispersable in water after drying. It has a slightly stronger bond strength and is also slightly more soluble in organic solvents. 303 HV films are soft, tacky and elastic. 303 HV is extremely elastic and the dry film remains permanently elastic. It can be used as a contact adhesive when doing hot seal linings.