Mechanical Seals vs. Hydraulic Seals
Nov 23, 2022
I. Mechanical seals and hydraulic seals
Mechanical seals are one of the more sophisticated and complex mechanical base components and are key components of various pumps, reaction synthesis kettles, turbine compressors, submersible motors and other equipment. Their sealing performance and service life depends on many factors, such as selection, precision of the machine, correct installation and use, etc.
Hydraulic seals have pressure requirements and require a certain degree of finish on the bonding surface, and the sealing components are mostly rubber, which are closed through the local deformation of the seal.
Second, mechanical seals and hydraulic seals classification
Mechanical seal models: assembly seal series, light mechanical seal series, heavy mechanical seal series, etc.
Hydraulic seals: lip seals, V-shaped seals, U-shaped seals, Y-shaped seals, YX-shaped seals and hydraulic cylinders commonly used combination seals are mainly lei ring, glei ring and Sturgeon.
Third, how to choose seals
In the purchase of maintenance seals, most users will be according to the size and colour of the sample to buy, which will only increase the difficulty of procurement, and may not be able to choose the right product. It is recommended that the following procedures are used to improve the accuracy of your seal purchase: 1. Direction of movement - first decide on the direction of movement where the seal will be located, e.g. reciprocating, rotating, spiral or fixed. 2. Seal focus - for example, decide whether the active point is in the inner diameter for tie rod seals or in the outer diameter for piston seals etc. 3. The material to be used is determined from the original machine operating instructions or from an assessment of the actual working environment. 4. Pressure Rating - Consult the data from the original mechanical instructions or infer the working pressure rating by looking at the softness and structure of the original seal. After a period of use, the original size of the seal will be significantly affected by temperature, pressure and wear, etc. Selecting by sample can only be used as a reference, but a better method is to measure the size of the metal groove where the seal is located, which is more accurate.
