ETOL has more than 8000 different types rubber grommet blanking plugs. 

A grommet is a ring or edge strip inserted into a hole through thin material, typically a sheet of textile fabric, sheet metal and/or composite of carbon fiber, wood or honeycomb. Grommets are generally flared or collared on each side to keep them in place, and are often made of silicone, plastic, or rubber.

Rubber cable grommet which are usually used to cover the rough and sharp edges of a hole in metal. This is done to protect another material as it is passed through this hole. For this particular type of application or process，a rubber grommet is usually used. When a wire must go through a hole in metal，a two-piece plastic grommet can be used. This type of grommet effectively and safely grips the wire and it is a very important accessory if you need to avoid pulling a power cord or wire at all cost.