Coaxial cable wall bushing protect the cable line and seal with the silicone glue when installation. These bushings  are typically used for single coaxial cable pass through both exterior wall and interior wall when needed. 

   They are also called the coaxial wall grommets and used to cover and seal wall openings and protect coaxial cable from damage as they pass through wall opening and have the feature of weatherproof and UV resistant and can provide a water tight seal indoor and outdoor.  The high class environmental plastic materials used to produced them and ensure the good impact power that provides a durable solution to running low voltage cables through wall.

    The 4 row inverted gear teeth on the bushing foot have a good function to prevent bushing sliding off the hole in the wall,used together the silicone to prevent moisture penetration into the cable wire line through the drilled hole in wall and make the wall look smooth after cable installation. They are widely used in the cable installation industry project field.