The device integrated the supercharger and the filler within the sliding bulging die,utilizing the interference fit sealing and combination sealing,being of the functions of filling tube quickly,producing the changed ultrahigh pressure,filtrating liquid in cycles and controlling tube-bulging automatically.

The combination sealing including bellows seal,and vane seal with the help of leakage configuration to protect the motor for a low flow (0.

Application of the new composite seal for cutting without forms in the hydraulic support

Taking account of the working characteristics of hydraulic hammers, an optimum de- sign of the accumulator and composite seal constructions is conducted- to increase the hammer s total efficiency.

The fly hammer rotating seal is a new weave seal combined with spire drive seal and fly hammer shut down seal, It has an application value in the operation of chemical.