Meter seals selection method

Core Tip: Select accory meter seals , working conditions must be considered in order to select the appropriate form and seal materials, installation structure. Need to consider the working conditions of ..
Select the seal must consider working conditions, and to select the appropriate form of the material , the mounting structure of the seal. To consider working conditions generally include: temperature, pressure , medium. Other features of the device itself also need to combine to consider . On temperature than the operating temperature range of the material is generally -40 ~ +120 ℃. It is necessary to consider beyond 120 ℃ , and even different materials. Relatively rare low temperatures , in general, in the case of -20 ~ -40 ℃ to consider the use of cold N, generally at low temperature material will cause the material to harden , resulting in leakage, such as locomotives for the winter in the northern often such problems . As the pressure, the selected form to affect the seal . In general, in the low- pressure selection of rubber or seals will not be a big problem. But to consider the issue of a shock pressure , such as construction machinery startup, shutdown when its impact is much greater than normal operating pressure of the pressure , it will often choose anti- shock pressure up to 70Mpa squeeze gap or do the main seal. Sealing is also commonly used in combination an option .