一、 Performance and usage
    FAD dustproof seal is installed in the piston rod and pole which are axial movement in the hydraulic cylinder piston .to avoid dust into the hydraulic system to mangle or wear the seal ring and guidance ring.
    Tekang dustproof ring is composed of a dust-scraping ring and a flexible O-ring ,dust whipped by dust-scraping ring, and O-rings provide pressure to ensure dust-scraping ring is always closely pressed on the sliding surface.
二、 Material of construction
     polytetrafluoroethylene PTFE ＋ Nitrilo butadiene rubber NBR or Fluorine rubber FKM 。
三、 working conditions
    speed ： the maximum reciprocatespeed is 15m /s ；
    temperature ：－ 60 ～＋ 200℃ （ depend on the material of O-ring ）。
四、 Application
    are commonly used in the reciprocate , swinging and screwing movement of the piston rod and pole piston, the main areas of application is hydraulic pneumatic devices, chemical and food industries.
五、 Advantages
    Installation space is small, simple groove structure, good dustproof performance, even good results on the strong adhesion dust and ice. no crawling when starting ,no viscous phenomenon and endure wear and long life expectancy, up to 1000mm diameter and other characteristics.
六、 Design standards
    the groove and size, tolerance of FAD dustproof ring is accord with Adseries of Parker company and 2 type tekang dustproof ring series of Shamban company.
六、 order example
    diameter of pole Φ 45mm ， so ： TEKANG dustproof ring FAD-0450
七、 structure