They are available in black, in white ,in clear or other colour to allow single cable wire go through the hole in the bushing. The internal diameter of the hole in the bushings are designed according to the external diameter of the cable. The Inner Hole Dia. 7.0 mm X Cap Dia. 31 mm X 30 mm Length In black. Meantime, The Internal hole dia. of 5.2 mm, 7.0 mm, 8.0 mm and 8.5 mm are available for the single cable line usage.
Being made from high quality plastic materials meeting with RoHS certificate and UV-proof to ensure the enough bearing capacity forces and have colorfast feature for the installation. It is the plastic cable bushing or plastic wall grommet.
It is widely used in the cable wire industry for installation, maintenance,services field when the cable line along baseboard, wall, and other places.
The good design of four groups of inverted teeth on the plug rod body is to make the bushings not loose and slide in the drilled hole in the wall when it is installed and used, so as to strengthen the friction and firmness. These are often used for telephone cable wire, telecommunication and data system cables, and low voltage power cables. During the installation, to apply the silicone glue onto the back of the bushing near the wall and the drilled hole through the cable to prevent the moisture and dust from entering and penetration into the hole of the bushing and the drilled hole in the wall.