Cable Grommets

Cable grommets, sometimes referred to as wiring grommets, hole grommets or electrical grommets, are protective rings or sleeves inserted into holes to insulate and protect wires or cables passing through them. Grommets are commonly used in electrical installations, such as metal back boxes. They are used when wires need to pass through a panel or where edges need smoothing. They are also frequently used at desks as desk cord hole covers to provide a neat and tidy solution for cable management.

What are Cable Grommets Made From?

Cable grommets are manufactured from a variety of materials to suit different applications and environments. Some common materials include:

• Plastic (Nylon & PVC): Plastic cable grommets are cost-effective and versatile, providing good insulation and protection for general use.
• Rubber: Rubber cable grommets have excellent flexibility and durability, which makes them ideal for applications with vibration or movement.
• **Silicone: **Silicone cable grommets can withstand high temperatures and harsh environments, and they are suitable for demanding applications where heat resistance is crucial.
• Metal (Brass & Stainless Steel): Metal cable grommets provide superior strength and durability for heavy-duty applications or extreme conditions where impact resistance is needed.

What Types of Cable Grommets Are There?

There are different types of cable grommets with different designs, such as:

• Round/Oval Grommets: This type of cable grommet fits inside holes that are cut into panels. They are often used to protect cables from sharp cut edges or to provide strain relief for the cable. When a hole is cut into a panel, it can often leave a sharp edge. The grommet not only makes it look better but also acts as a bumper for cables and wire that pass through. Most round/oval grommets fit by pushing or snapping into place.
• Grommet Strips: These are strips of material that sit over the edge of a panel. This type of wiring grommet is designed to improve the appearance or to protect the edge. Grommet strips are available in various lengths and can often be cut to size. There are heat-activated adhesive strips available too.
• **Blind/Blanking Grommets: **These electrical grommets are the same as round grommets. However, they do not have a hole in the middle. They are often used to fill holes that are not currently in use to prevent dust from getting in. Some blanking grommets have small holes in them. These are referred to as diaphragm grommets. The hole sits snug around the wire to protect it from the surrounding area and to prevent dust from passing through to the electrics behind it.

How to Choose a Cable Grommet?

If you are looking for round grommets, you need to consider the panel and the hole it is to sit in. The grommet needs to match the size of the panel hole diameter and the thickness of the panel. The inner hole diameter also needs to meet your specifications for how large the wires that pass through will be. Most measurements for grommets are given in millimetres (mm).

If you are considering a grommet strip/edging, the strip needs to fit over the width of the edge of the panel. You also need to ensure that the strip is long enough to cover your desired edge. Most strips can be cut down to size if required.

Environmental and Safety Benefits of Cable Grommets

Cable grommets contribute significantly to both environmental protection and workplace safety. By preventing damage to wires and cables from abrasion, moisture, and sharp edges, they reduce the risk of electrical hazards, short circuits, and potential fires. This protection also extends the lifespan of cables, reducing waste and promoting sustainability.

Industrial Applications of Cable Grommets

Cable grommets find widespread use across diverse industries to ensure safe and organised cable management.

• Discrete Manufacturing: Used extensively in electronics assembly to protect delicate wires and cables within equipment, machinery, and control panels, preventing damage and ensuring reliable operation.
• Process Manufacturing: Essential for protecting cables in harsh industrial environments, preventing damage from chemicals, extreme temperatures, and mechanical stress, and ensuring continuous operation of critical processes.
• Energy & Utilities: Ensure the integrity of electrical installations in power plants and substations, preventing cable damage from exposure to harsh weather, moisture, and other environmental factors, ensuring safety and reliability.
• Facilities & Intralogistics: Used in warehouses and distribution centres to protect cables from damage caused by material handling equipment, foot traffic, and general wear and tear, maintaining efficient operations.

Your Trusted Cable Grommets Supplier & Manufacturer

RS is your reliable source for high-quality cable grommets. We stock an extensive range from industry leaders like SES Sterling, HellermannTyton, and our own RS PRO line. Our selection spans various types and sizes, including desk cord hole covers and rubber cable grommets, at competitive prices, ensuring you find the perfect cable grommet, electrical grommet or hole grommet for your application.

At RS, we are committed to providing the best products for all your cable and wiring needs. From cable grommets to cable clips and cable gland plugs, we have everything you need to ensure safe and efficient cable management. Trust RS and explore our range of products today. For more details on our ordering process, delivery services and delivery fees, please refer to our Delivery Page.