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

View all Cable Grommets
Bulk discount available

Subtotal (1 box of 100 units)*

£11.04

(exc. VAT)

£13.25

(inc. VAT)

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In Stock
  • 170 unit(s) ready to ship
  • Plus 42 unit(s) ready to ship from another location
  • Plus 103 unit(s) shipping from 07 October 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

Alternative

This product is not currently available. Here is our alternative recommendation.

presentation
Essentra DG Black PVC 20mm Cable Grommet for Maximum of 15.5mm Cable Dia. DG-10187
RS Stock No.
401-933

Each (In a Pack of 50)

£0.798

(exc. VAT)

£0.958

(inc. VAT)

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

RS PRO

Grommet Type

Cable Grommet

Panel Hole Diameter

20mm

Maximum Cable Diameter

16mm

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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