| abstract |
A device for administering an aerosol, comprising: a body (14), a valve stem (12), and a diaphragm (16), said diaphragm being made of a thermoplastic elastomer containing an ethylene / 1-butene copolymer. The invention also relates to sealing elements containing such an elastomer and to mixtures of thermoplastic polymers, for example, for use in the sealing elements according to the invention. The devices according to the invention are particularly useful for administering compositions containing as propellant gas 1,1,1,2-tetrafluoroethane or 1,1,1,2,3,3,3-heptafluoropropane. |