German Sealconcept seals Sealconcept models Sealconcept prices

Sealconcept seals are sealing devices installed to prevent leakage between the pump shaft and the housing. Common types of shaft seals include packing seals, mechanical seals, and power seals. The shaft seal of a reciprocating pump is usually a packing seal. When transporting media where leakage is not permitted, a diaphragm reciprocating pump can be used. The shaft seals of rotary pumps (including vane pumps, rotor pumps, etc.) mainly include packing seals, mechanical seals, and power seals. The shaft seal of a reciprocating pump is usually a packing seal. When transporting media where leakage is not permitted, a diaphragm reciprocating pump can be used. The shaft seals of rotary pumps (including vane pumps, rotor pumps, etc.) mainly include packing seals, mechanical seals, and power seals.

Sealconcept seal principle

Due to the oil film controlled by the lip of the oil seal between the oil seal and the shaft, this oil film has fluid lubrication characteristics. Under the action of liquid surface tension, the stiffness of the oil film causes the end of the oil film in contact with air to form a meniscus, preventing the leakage of the working medium and thereby achieving sealing of the rotating shaft. The sealing capability of an oil seal depends on the thickness of the oil film on the sealing surface; if the thickness is too great, the oil seal will leak; if the thickness is too small, dry friction may occur, causing wear on the oil seal and shaft; if there is no oil film between the sealing lip and the shaft, it is easy to cause heating and wear. Therefore, during installation, some oil must be applied to the sealing ring, and it must be ensured that the skeleton oil seal is perpendicular to the shaft axis. If it is not perpendicular, the sealing lip of the oil seal will wipe the lubricating oil off the shaft, which will also lead to excessive wear of the sealing lip. During operation, it is ideal for a small amount of lubricant in the housing to seep out slightly to achieve the state of forming an oil film at the sealing surface.

Sealconcept seal function

The general function of a skeleton oil seal is to isolate components requiring lubrication in transmission parts from output components, preventing lubricating oil from leaking. It is typically used on rotating shafts and is a type of rotating shaft lip seal. The skeleton acts like reinforcing steel in concrete components, providing reinforcement and allowing the oil seal to maintain its shape and tension. According to the skeleton type, it can be divided into inner skeleton oil seals, outer skeleton oil seals, and exposed inner and outer skeleton oil seals. Skeleton oil seals are made of high-quality nitrile rubber and steel plates, offering stable quality and long service life. They are widely used in automobiles, motorcycle crankshafts, camshafts, differentials, shock absorbers, engines, axles, front and rear wheels, and other parts. 1) Prevent sand, dust, water vapor, etc., from invading the bearing from the outside; 2) Restrict the leakage of lubricating oil from the bearing. Requirements for oil seals include that dimensions (inner diameter, outer diameter, and thickness) must comply with regulations; they must have appropriate elasticity to properly grip the shaft and achieve a sealing effect; they must be heat-resistant, wear-resistant, strong, resistant to media (oil or water, etc.), and have a long service life.

Sealconcept seal maintenance

1) Control of shaft seal pressure: High shaft seal pressure can easily cause steam to escape from the shaft seal, making it easy for water to enter the oil and causing deterioration of turbine oil quality. Excessively high shaft seal pressure will cause the equalizing box safety valve to operate, wasting working fluid and damaging equipment. Too low shaft seal pressure may cause a drop in unit vacuum, allowing cold air to enter the shaft seal or even the cylinder, causing cooling of the shaft seal section or inside the cylinder, which seriously threatens equipment safety. 2) Impact of abnormal shaft seal temperature on the unit: When the shaft seal temperature is too high, especially before unit startup, if the temperature is too high, it will cause intense heating at the shaft end steam seal and the rotor steam seal section, producing local stress concentration phenomena, thereby causing certain deformation, which may change the gap between the rotor and the cylinder, increase the amount of steam leakage from the shaft seal, increase differential expansion, and in severe cases, may cause stationary and rotating part friction. When the shaft seal temperature is too low, it will cool the shaft end steam seal and the rotor steam seal section; similarly, it will produce local stress concentration phenomena, changing the gap between the cylinder and the rotor, increasing the amount of air leakage at the shaft end, and decreasing differential expansion. When the shaft seal temperature is too low, the steam supplied to the shaft seal may carry water, causing water hammer in the shaft seal steam supply pipeline. In severe cases, this can cause water ingress into the turbine.

Weidou Intelligent Technology specializes in selling German Sealconcept seals, Sealconcept sealing rings, Sealconcept sealing strips, Sealconcept pipe seals, Sealconcept cable seals, Sealconcept rubber seals, Sealconcept mechanical seals, Sealconcept gaskets, Sealconcept oil seals, Sealconcept shaft seals, Sealconcept metal seals, Sealconcept high-pressure seals, Sealconcept spiral seals, Sealconcept centrifugal seals, Sealconcept sealing rings, Sealconcept original imports from Germany. We welcome inquiries and orders from users.