| 摘要 |
A seal for a valve for use in a pharmaceutical metered dose aerosol inhaler device, which seal is formed from an elastomer based on an ethylene-propylene-diene terpolymer, which terpolymer comprises from 50 to 60 wt.% ethylene, from 35 to 45 wt.% propylene, and ENB (ethylidene-norbornene) in an amount of up to 5 wt.%. Also disclosed is a process for preparing the seal and an inhaler device comprising the seal. |
