High speed mechanical seal

When the speed exceeds 3000r/min or friction than the linear velocity of 25m / s , generally can be regarded as high fixed length plastic strap seal. At high speed , the friction face the linear velocity is large, the heat generated by friction is also more difficult to form film end time , wear and tear .
Speed ​​is also likely to cause vibration of the rotating ring , and by a large centrifugal force , the liquid film between the end faces is not conducive to the formation and maintenance . Therefore, at high speed , to reduce the centrifugal force and vibration, the rotary member should be minimized , spring static structure. You can also enhance the friction face of the cooling and lubrication. It may also be used [PV] the value of high friction material , reducing the width of the contact face , or using a controlled membrane mechanical seal.
In recent years, called the differential ring of the mechanical padlock seals also been applied to high-speed devices . Since the middle of the original movement joined a differential ring ring friction line speed can be reduced by half , and achieved good results.