The Importance of Rubber Grommets
The primary purpose for grommets is to protect material from a hole that has been cut. Sharp edges from metal or panel walls needs to be sealed.Rubber grommets creates a lining for holes in sheet metal, wood, plastic, etc.
When used for electrical and wiring applications, they provide support and protection for wires and cables.Tearing or abrasion are an usual occurrence if you try to go without these. Don't risk it!
The inner surface of your rubber grommets also protect your wiring from contamination from dirt, air, water, etc. So whenever you drill holes please don't forget about these inexpensive but critical component. Don't leave your wires exposed. In addition to what we mentioned above, you can also use for computer drives, casing, etc.