High temperature design: specially designed for high temperature of bellows mechanical seal

Corrosion resistant design: with special corrosion type seal

YQD series hydraulic metal bellows mechanical seal is based on the improved in HQD series high temperature resistant, corrosion resistant seal, auxiliary static seal using the flexible graphite, durable.
Rotary type structure, hydraulic metal bellows replaces weld metal corrugated pipe, alloy ring and ring seat between ring and ring with glue instead of alloy seat between heat set, alloy ring and ring seat between adhesive completely put an end to the alloy ring drop, such as deformation and cracking phenomenon.
 
Use environmental adaptation ability strong resistance to high temperature, corrosion resistance, widely used in the transportation of crude oil, mud, mortar, dirty oil, asphalt, containing solid particles, the pump of medium to high viscosity easy solidification and so on, has been used in oil refineries, chemical plants, thermal power plants, smelters, and other industries on the high temperature of pump.
 
Operation parameters:
Temperature: - 40 ℃ ~ 400 ℃
Pressure: 2.5 MPa or less
Speed: 25 m/s or less