The All-Plastic Diaphragm Pressure Gauge consists of a standard plastic-case pressure gauge connected to a diaphragm seal made entirely of plastic. The diaphragm seal is available in two configurations: standard type and I-shaped type. The main components of the gauge are made of plastic, while the isolation diaphragm is made of PTFE, providing excellent resistance to highly corrosive media. This instrument is suitable for measuring the pressure of highly corrosive liquids and gases, such as chlorine, hydrochloric acid, and nitric acid, in the chemical industry.