What is the difference Rubber sealing stripe between 1 and 2 ?


As the picture show : Red No.1 Rubber sealing stripe ,Acturally we call it Flange U sealing strip ,It is Fully enveloping the perimeter of the screen .But Red No.2 show :Not completely covered .

Red No .1 solves prolem from Two points are reflected .

  1. Complete solve the Powder leakage problem .
  2. Increase screen using life .

As so far , Food/Medicine Grade have been applied to this .