Rubber Grommet Materials
Choose a rubber grommet material from the actual service requirements. Important factors include temperature, contact fluids, weather exposure, movement and the required mechanical properties.
THE GROMMET JOURNAL
Practical perspectives on materials, applications and choosing the right rubber grommet.
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Materials. Profiles. Applications.Choose a rubber grommet material from the actual service requirements. Important factors include temperature, contact fluids, weather exposure, movement and the required mechanical properties.
When sourcing a rubber grommet kit, request a contents list with dimensions and material information. Confirm the quantity of each part and the intended applications.
A rubber grommet hole plug closes an unused opening in a specified panel. It has no cable passage unless a particular product is designed for permitted piercing…
A rubber grommet used for sealing must match the specified opening and mating surfaces. Flexibility does not justify forcing an oversized part into an undersized hole.
A rubber grommet may provide edge protection at a specified electrical-box opening. Confirm that the selected cable-entry arrangement meets the box and equipment requirements.
A 1/2-inch mounting hole is nominally 12.7 mm. The grommet's usable cable passage will be a separate dimension and must be checked on the drawing.
A 5/8-inch panel hole measures 15.875 mm. Select a grommet explicitly specified for that mounting-hole size and the panel thickness. The 5/8-inch hole is not the same…
A rubber grommet for a 2-inch mounting hole is specified for a nominal 50.8 mm cutout. Confirm the allowed tolerances and panel-thickness range.
A 1.5-inch mounting hole is nominally 38.1 mm. Select a grommet whose drawing specifies that cutout and a compatible panel-thickness range.
A grommet specified for a 1-1/4-inch mounting hole fits a nominal 31.75 mm cutout within its stated tolerances. Confirm the panel-thickness range and internal passage separately.
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