EPDM Rubber Grommet Kit Open Blind Snap in Cable Wire Protection Hole Plug Vibration Damping Sealing

Rubber Grommet Uses

Rubber cable grommets are versatile products that are widely used in several industries. Their principal uses include:

Covering the sharp edges of holes in metal plates to protect cables and pipes from cuts and chafing damage, prolonging their useful life. A common example is an electrical backbox. These are rectangular chambers inserted into walls to house plugs and power points, with the wiring entry and exit points protected by grommets

Rubber grommets provide strain relief, gripping wiring in place and minimising the damage and disruption that might occur if the cord or cable was accidentally pulled. A good example of this usage is ethernet and other ports at the back of PCs and laptops

Reducing engine vibration in cars and other vehicles

Amongst the industries to make routine use of rubber grommets are:

Electronics

Construction

Automotive engineering

Aeroplane engineering and avionics

Telecommunications

Internet data centres

Medical equipment manufacturers

Rubber is a resilient substance and offers several benefits in comparison to other grommet materials. It is resistant to:

Weather

Moisture

Heat

Low temperatures

Ozone

Ultraviolet light (UV)

Hydrochloric, saltpetre, phosphoric and sulfuric acid

Alkali environments

Strain

Type

Description

Rubber Blanking Plugs

Rubber blanking plugs are used to seal holes and are designed to hold and control pressure coming from above or below, making them a good grommet choice for high-pressure UK devices and tubing.

Some feature a small hole into which a wire can be inserted for a firm hold. These are called diaphragm grommets.

Open Rubber Grommets

Open rubber grommets are the most basic design, featuring a central hole. They are used to protect cables and pipes when they pass through holes in metal plating.

Closed Rubber Grommets

Also known as blind rubber grommets, closed grommets provide air-tight seals when applied, and can be a good choice for sealing holes not currently in use to prevent the build-up of dust.

Unlike similarly shaped round grommets, blind rubber grommets have no central hole. They are widely used by China electronics industry.

A further variant is the semi-blind grommet. These feature a central membrane that is thin enough to be pierced by wires or cables. This means that semi-blind grommets can take the place of both open and closed grommets.

Rubber Grommet Strips

Rubber grommet strips are distinct from other designs. They are strips designed to sit along the edge of a panel or plate to smooth its edge. They can be cut to size and adhesive varieties are also available.

Tapered Rubber Grommets

Tapered rubber grommets are principally used to blank (seal) holes in metal panels and plates. The tapered design allows them to be used with thicker panels that might be too large for a closed grommet

Stepped Rubber Grommets

Stepped rubber grommets typically have a tapered cone shape, marked at intervals. These lines indicate where the grommet can be cut to different sizes. This versatile design makes them ideal for industries that use multiple cable sizes.

White Rubber Grommets

White rubber grommets are a distinctive variety typically made from silicone. They are resistant to both low and high temperatures (between -55°C and 180°C), while special varieties of silicone resist temperatures as high as 800°C.

Custom Rubber Grommets

Some manufacturers offer custom rubber grommets, also known as special shape grommets, made to a customer's unique specifications. This can include particular rubber materials, sizes and designs.