A mechanical end seal R-21UK is a seal used in rotating equipment to seal the shaft that transfers mechanical energy to the working body of the mechanism, in equipment such as pumps, compressors, chemical reactors, vacuum filter dryers, agitators, etc.
Mechanical seals are used to separate two media with different physical properties and parameters, preventing leakage. Such mechanisms are used in the oil refining, chemical, metallurgical, food, pharmaceutical and other industries. In particular, mixers and pumps are found in enterprises producing alcoholic and non-alcoholic beverages, mineral water, oil, dairy products, food additives, pharmaceutical products, etc.
The main unit of the mechanical seal is the friction pair. The material from which it is made must have wear resistance and a low coefficient of friction. By design, the mechanical seal can be internal and external, single and double. The choice of a mechanical seal design is largely determined by the physicochemical properties of the medium for which the seal is intended: its state of aggregation (gas, liquid), pressure, temperature, viscosity, the content of suspended solids and salts, chemical aggressiveness, flammability (when heated, in contact with the atmosphere), the degree of danger of exposure to people and the environment. The wrong choice of seals or their poor quality and improper operation can lead to deviations in the performance of machines, a decrease in their reliability, and large economic losses.
