The rubber grommets are the best way to seal and protect your equipment and tools from outside effect or impact and they can serve as a barrier between dangerous chemicals and gasses and the environment. When choosing the right unit for your needs, the most important thing you need to pay attention to is the size. The 1/2 inch rubber grommet is one of the standard sizes that you can go with, however, you need to properly measure the hole or the item that you want to seal or protect, and you need to install the unit in the right way if you want to have the best experience. 

As manufacturers, we can aid in your decision, and we can tell you if the 1/2 inch rubber grommet is the right one for your project, or if you need to opt for a different size. To check if this is going to be the right dimension is to measure the diameter of the hole that you want to protect or the size of the item that you need to install the unit around. You will need to determine the thickness as well, because, as you already know, the thickness is as important as the diameter of the units. Another way that you can approach this is that you can first measure the grommet and then see if it would fit the hole that you have made. 

In some industries, where you can make the holes on your own, you just need to create a hole that will be the right fit for the 1/2 inch rubber grommet. The reason why most users choose this material is that it will provide the needed support no matter the conditions to which it will be exposed to and it is one of the few materials that can withstand moisture, water, chemicals, and extreme heat or cold.