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What is the difference between mechanical seals and hydraulic seals?
by：Lepu Seal
2022-09-16
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 thing. 1. Talking about mechanical seals and hydraulic seals Mechanical seals are one of the basic mechanical components with precision and complex structure compared with mechanical seals for kettles. They are various pumps, reaction synthesis kettles, turbo compressors, submersible motors, etc. key components of the equipment. Its sealing performance and service life depend on many factors, such as model selection, machine accuracy, correct installation and use, etc. The hydraulic seal has pressure requirements, and the joint surface is required to have a certain degree of finish of the mechanical seal used in the kettle. The sealing element is mostly made of rubber, and the sealing effect is achieved through the local 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, etc. Hydraulic seals: lip seals, v-shaped seals, u-shaped seals, The commonly used combined seals for y-shaped seals, yx-shaped seals and hydraulic cylinders are mainly bud-shaped rings, Glyn rings and step seals. 3. How to choose seals When purchasing seals for maintenance, most users will buy according to the size and color of the sample, which will only increase the difficulty of purchasing, and may not be able to choose the right product. It is recommended to use the following procedures to improve the accuracy of purchasing seals: 1. Movement direction - first determine the movement direction of the location of the seal, such as reciprocating, rotating, spiral or fixed. 2. Sealing focus - such as determining the active point is the tie rod seal on the inner diameter or the active point is the piston seal on the outer diameter, etc. 3. Temperature grade - refer to the original machine operating instructions or evaluate the working temperature according to the actual working environment to determine the required materials. A description of temperature ratings can be found in the Production User Notes below. 4. Pressure level - refer to the relevant data from the original mechanical operating instructions, or infer the working pressure level by observing the hardness and structure of the original seal. For the description of the pressure level, please refer to the following precautions for production users. 5. Size - most users will buy according to the old samples that have been used, but the original size of the seal will be greatly affected by factors such as temperature, pressure and wear after a period of use, and the sample selection can only be used as a reference , a better method is to measure the size of the metal groove where the seal is located, and the accuracy will be higher.
Generally, it is difficult for people to distinguish between mechanical seals and hydraulic seals, and they often think that they are the same thing. 1. Talking about mechanical seals and hydraulic seals Mechanical seals are one of the basic mechanical components with precision and complex structure compared with mechanical seals for kettles. They are various pumps, reaction synthesis kettles, turbo compressors, submersible motors, etc. key components of the equipment. Its sealing performance and service life depend on many factors, such as model selection, machine accuracy, correct installation and use, etc. The hydraulic seal has pressure requirements, and the joint surface is required to have a certain degree of finish of the mechanical seal used in the kettle. The sealing element is mostly made of rubber, and the sealing effect is achieved through the local 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, etc. Hydraulic seals: lip seals, v-shaped seals, u-shaped seals, The commonly used combined seals for y-shaped seals, yx-shaped seals and hydraulic cylinders are mainly bud-shaped rings, Glyn rings and step seals. 3. How to choose seals When purchasing seals for maintenance, most users will buy according to the size and color of the sample, which will only increase the difficulty of purchasing, and may not be able to choose the right product. It is recommended to use the following procedures to improve the accuracy of purchasing seals: 1. Movement direction - first determine the movement direction of the location of the seal, such as reciprocating, rotating, spiral or fixed. 2. Sealing focus - such as determining the active point is the tie rod seal on the inner diameter or the active point is the piston seal on the outer diameter, etc. 3. Temperature grade - refer to the original machine operating instructions or evaluate the working temperature according to the actual working environment to determine the required materials. A description of temperature ratings can be found in the Production User Notes below. 4. Pressure level - refer to the relevant data from the original mechanical operating instructions, or infer the working pressure level by observing the hardness and structure of the original seal. For the description of the pressure level, please refer to the following precautions for production users. 5. Size - most users will buy according to the old samples that have been used, but the original size of the seal will be greatly affected by factors such as temperature, pressure and wear after a period of use, and the sample selection can only be used as a reference , a better method is to measure the size of the metal groove where the seal is located, and the accuracy will be higher.
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