Rubber Grommets

Grommets, sometimes referred to as edging, are pieces of plastic or rubber which cover an edge for functional or aesthetic purposes. Grommets are commonly used in electrical installations, for example, metal back boxes. They are used when wires need to pass through a panel, or where edges need smoothing.
What are they made from?
Most grommets are made from either plastic, rubber or Nylon. PVC is a popular material as it is strong and durable. Most cable grommets are black but there are other colours available, such as clear or grey.

What types of cable grommet are there?
• Round/Oval Grommets fit inside of 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 than pass through. Most round/oval grommets fit by pushing or snapping into place.
• Grommet strips are strips of material that sit over the edge of a panel. They are designed to improve the appearance or to protect the edge. Grommet strips are available in various lengths which are often able to be cut to size. There are heat-activated adhesive strips available too.
• Blind/Blanking 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 a small hole 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 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 same size as the panel hole diameter and the thickness of the panel. The inner hole diameter also needs to meet your specification of 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.

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Description Price Grommet Type Minimum Panel Thickness Minimum Cable Diameter Maximum Cable Diameter Panel Hole Diameter Material Colour Grommet Strip Length Minimum Operating Temperature Maximum Operating Temperature Series Standards Met Maximum Panel Thickness
RS Stock No. 124-4452
Mfr. Part No.02580016010
MYR440.85
1 Bag of 50
Bag(s)
Round - 1mm 39mm 50mm Polychloroprene Black - -30°C +90°C DG - 2.5mm
RS Stock No. 605-655
BrandRS PRO
MYR46.29
1 Box of 100
Box(es)
Round - - 18.5mm 25mm PVC Black - -40°C +130°C - - 1.6mm
RS Stock No. 124-4446
Mfr. Part No.02580355010
MYR401.10
1 Bag of 100
Bag(s)
Round - 1mm 21mm 28mm Polychloroprene Black - -30°C +90°C DG - 2mm
RS Stock No. 161-4098
Mfr. Part No.01330355010
MYR175.81
1 Bag of 100
Bag(s)
Round - - 21mm 28mm PVC Black - -30°C +70°C PLIO - 2mm
RS Stock No. 666-4590
BrandRS PRO
MYR18.66
1 Bag of 100
Bag(s)
Round - - 6.4mm 10mm PVC Black - - - - - 1.7mm
RS Stock No. 874-1156
Mfr. Part No.Rayrim-NR9-0-SP
MYR36.118
Each (On a Reel of 50)
units
Grommet Strip 4.2mm - - - Polyolefin Black 50m -55°C +80°C Rayrim - 4.5mm
RS Stock No. 520-977
Mfr. Part No.0 980 93
BrandLegrand
MYR709.81
1 Box of 100
Box(es)
Round - - 12mm 17mm PVC Black - -20°C +80°C - - 4mm
RS Stock No. 136-7225
Mfr. Part No.01070040010
MYR140.87
1 Bag of 100
Bag(s)
Round - - 12mm 18mm PVC Black - -30°C +70°C PLIO - 2mm
RS Stock No. 666-7365
BrandRS PRO
MYR3.846
Each (In a Pack of 25)
units
Round - 1mm 3mm - Rubber Black - -35°C +220°C - IEC, TSA Certified -
RS Stock No. 324-7246
Mfr. Part No.FGG.3B.712.DN
BrandLemo
MYR70.05
Each
units
Round - - - - Brass Silver - - - 2B/3B - -
RS Stock No. 241-4580
BrandRS PRO
MYR119.92
1 Box of 100
Box(es)
Round - - 8mm 12mm PVC Black - - - - - 3mm
RS Stock No. 324-7218
Mfr. Part No.FGG.3B.792.DN
BrandLemo
MYR70.05
Each
units
Round - - - - Brass Silver - - - 2B/3B - -
RS Stock No. 136-6632
Mfr. Part No.01330352010
MYR79.76
1 Bag of 100
Bag(s)
Round - - 11mm 18mm PVC Black - -30°C +70°C PLIO - 2mm
RS Stock No. 136-5926
Mfr. Part No.02520130010
MYR59.81
1 Bag of 100
Bag(s)
Round - - 5mm 7mm Polychloroprene Black - -30°C +90°C HELAVIA - 1mm
RS Stock No. 187-9403
Mfr. Part No.633-05020 HV1502-PVC-BK (2000)
MYR77.07
1 Bag of 100
Bag(s)
Round - - 6.5mm 8mm PVC Black - -30°C +60°C HV - 1.5mm
RS Stock No. 605-677
BrandRS PRO
MYR69.01
1 Box of 100
Box(es)
Round - - 20.5mm 25mm PVC Black - -40°C +130°C - - 1.5mm
RS Stock No. 187-9605
Mfr. Part No.632-01030 HV2103-PVC-FR-BK (1000)
MYR98.53
1 Bag of 100
Bag(s)
Round - - 3mm 9mm PVC Black - -30°C +60°C HV - -
RS Stock No. 401-917
Mfr. Part No.DG-10806
BrandRichco
MYR4.431
Each (In a Pack of 50)
units
Round - - 25.5mm 25.5mm PVC Black - -30°C +70°C DG - 2.4mm
RS Stock No. 666-4603
BrandRS PRO
MYR27.92
1 Bag of 100
Bag(s)
Round - - 10.5mm 14mm PVC Black - - - - - 3.4mm
RS Stock No. 241-4603
BrandRS PRO
MYR240.06
1 Box of 100
Box(es)
Round - - 18mm 22mm PVC Black - - - - - 3mm