From all the sizes you can choose, big rubber grommets are some of the most common sizes to choose from. They see their use mostly when needing to protect larger equipment from wear and tear. Since they’re designed so that cables and similar equipment goes through them, the big rubber surface will provide adequate protection against sharp edges.This is why big rubber grommets are so popular in the automotive industry. Since plenty of cables go in and around the engine area of a vehicle, big rubber grommets are instrumental so that things run smoothly and no cables are cut from the abrasion. By adding them to wires, cables, or hoses, you will be making sure nothing gets cut. 

Considering they’re made from rubber, and various types of it, that gives the big rubber grommet other properties. The material provides excellent protection against low and high temperatures, abrasion, electricity, and more. Some particular types of big rubber grommets include NR, NBRM EPDM, silicone, neoprene, and FKM.  Each of these is a different type of rubber, meaning they provide somewhat the same protection against high and low temperatures, electricity, abrasion, and more. Since they’re fairly larger than normal rubber grommets, they can be used far more efficiently when needing to protect larger wires, cables, etc. You can even combine multiple wires and cables to fit the diameter of the grommet. When looking at the measuring properties of big rubber grommets, quite a few factors have to be taken into consideration. The inside diameter can be anywhere from 5 to 7.5 units, while the outside diameter between 10 and 14.5 units. The groove diameter and groove width also have to be taken into considerat on, as big rubber grommets are much bigger in these two categories. For example, the groove diameter (GD) can be anywhere from 7.5 units to 10.5 units, while the groove width between 4 and 5. And the last measure is the overall thickness, which on big rubber grommets is anywhere between 8 and 50mm.