A - Overall Outer Diameter
B - Outer Diameter
C - Installation Diameter
D - Inner Diameter
E - Overall Thickness
F - Installation Thickness or Thickness of Board
And Other Radiuses are need to know to make the quote.
Blind Rubber Grommets is a type of grommet which there is a construction of diaphragm. The wire should break the diaphragm when this grommet needs to be used.
This grommet is for Electrical Wire using.
Normally if you need it be used ourdoor, material would be EPDM, but if you need other material you may also kindly tell us.