RS PRO Black PVC 20mm Cable Grommet for Maximum of 16mm Cable Dia.

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Bulk discount available

Subtotal (1 box of 100 units)*

£11.04

(exc. VAT)

£13.25

(inc. VAT)

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In Stock
  • Plus 38 unit(s) shipping from 27 October 2025
  • Plus 134 unit(s) shipping from 10 November 2025
  • Plus 179 unit(s) shipping from 17 November 2025
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Box(es)
Per Box
Per unit*
1 - 4£11.04£0.11
5 - 9£10.73£0.107
10 +£10.45£0.105

*price indicative

RS Stock No.:
605-661
Brand:
RS PRO
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Brand

RS PRO

Grommet Type

Cable Grommet

Maximum Cable Diameter

16mm

Panel Hole Diameter

20mm

Material

PVC

Colour

Black

Maximum Panel Thickness

1.5mm

COO (Country of Origin):
GB

RS Pro Blind Grommets with Diaphragm


This range of RS Pro blind grommets (also known as closed grommets or hole-plugs) feature a diaphragm.

Options available:


605-661 - 20mm
605-677 - 25.5mm

What is a diaphragm?


The diaphragm is a thinner PVC film that sits in the “hole” of the grommet. It surrounds smaller wires securely, for guidance and protection.
A preformed hole enables easy cable entry/exit. The diaphragm sits snug around the wire to provide a dust tight seal which is essential in many electrical installations.

Where are diaphragm grommets used?


RS Pro PVC grommets are popular for use with metal back boxes. They fit into the pre-cut discs on most metal back boxes. Wires are then thread through the hole and supported by the surrounding diaphragm.
The grommet ensures that the wire passes through the hole without coming into contact with the metal box. It also provides protection for the wire.

Features:


Black PVC
Diaphragm with hole for wire
Dust tight around wire
Pre-formed hole

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