What is the difference between mechanical seals and hydraulic seals?

What is the difference between mechanical seals and hydraulic seals? Generally, it is difficult for people to distinguish between mechanical seals and hydraulic seals, and they often think that they are the same object. 1. Talking about mechanical seals and hydraulic seals. Mechanical seals are one of the basic mechanical components that are more precise and more complex than the mechanical seals used in kettles. They are various pumps, reaction synthesis kettles, turbo compressors, submersible motors, etc. The key components of the equipment. Its sealing performance and service life depend on many factors, such as type selection, machine accuracy, correct installation and use, etc. Hydraulic seals have pressure requirements and require a certain degree of smoothness on the joint surface of the autoclave mechanical seal. The sealing elements are mostly rubber, and the sealing effect is achieved through the partial deformation of the seal. 2. Classification of mechanical seals and hydraulic seals Mechanical seal models: cartridge seal series, light mechanical seal series, heavy mechanical seal series and other hydraulic seals: lip seals, v-shaped seals, u-shaped seals, The commonly used combination seals for y-shaped sealing rings, yx-shaped sealing rings and hydraulic cylinders are mainly lace rings, grid rings and ster seals. 3. How to choose seals. When purchasing seals for maintenance, most users will buy them according to the size and color of the sample. This will only increase the difficulty of purchasing, and it may not be possible to choose the right product. It is recommended to use the following procedures to improve the accuracy of the procurement of seals: 1. Movement direction-first determine the direction of movement of the location of the seal, such as reciprocating, rotating, spiral or fixed. 2. Sealing focus-for example, determine whether the active point is the tie rod seal with the inner diameter or the piston seal with the outer diameter. 3. Temperature grade-consult the original machine instructions or evaluate the working temperature according to the actual working environment to determine the required materials. For the description of temperature levels, please refer to the following notes for production users. 4. Pressure level-refer to the relevant data from the original machinery operating instructions, or infer the working pressure level by observing the hardness and structure of the original seal. For the pressure level description, please refer to the following notes for production users. 5. Size-most users will choose the old samples that have been used, but after a period of use, the original size of the seal will be greatly affected by factors such as temperature, pressure and wear. The selection according to the sample can only be used as a reference , A better method is to measure the size of the metal groove where the seal is located, the accuracy will be higher.