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A rubber grommet offers a quicker installation than a cable gland, costs less and no need for tools for installation. Our rubber grommets can handle a larger cable span and the installation will be sealed prior to and after cable installation without the need for any plugs. There are several reasons why so many installers choose a rubber grommet instead of a plastic cable gland when you want to seal your installation from dust and water.
link:http://www.rubberplasticparts.com
IP67 TST Grey M25 EPDM Heavy Duty Cable Grommet / Cable Gland