what is "Hybrid Railway Insulator"?

Usage:
To contact grid system for electrical railway                             

Specified Cantilever Load (SCL):  4-20 kN
Color: Brown, Gray, or Customer's requirement
Applicable Standard: IEC, or Customer requirement           
Feature
* High mechanical strength with much lower of deflection;
*  Excellent performance of anti-pollution;
*  Long lifetime is guaranteed;
  *  Maintenance expenditure is reduced to a minimum;   


Structure and manufacturing process
*  Porcelain Core: manufactured with high alumina porcelain raw materials;
*  Silicone Rubber Sheds: HTV silicone rubber, with alternative shed profile；
*  With the high pressure injection molding at high temperature, the silicone housing is fully
    bonded to the porcelain solid core which cemented fitting in advance. The silicone housing
   adheres directly to the fitting without the need for artificial sealing.