Custom oval rubber cable grommet/Buna-N rubber grommets

An oval rubber cable grommet provides a shaped interface around a cable entry. The custom outline follows the opening's long and short axes, while the retaining profile matches the receiving wall. For a Buna-N version, material suitability needs to be considered separately from the oval fit.

Check the rounded ends of the opening along with its overall length and width. A mismatch at the ends can leave folds even when the long sides appear correct. The cable passage should also follow the intended route without forcing the insert to rotate or lift.

Select the compound for the actual substances and temperatures at the entry rather than assuming universal compatibility. Fit the grommet into a smooth, clean opening and inspect the complete perimeter. Route the cable and secure its supports before making the final seating check. During maintenance, look for displaced rubber after wiring changes. A replacement needs the matching oval geometry and selected compound so both the mechanical contact and environmental suitability remain consistent with the intended design.

Material options

Custom rubber compound and color, selected for the contact conditions and required geometry.

Hardness range

30–90 Shore A for rubber. Assess the grade against this fit requirement: A mismatch at the ends can leave folds even when the long sides appear correct.

Custom profile & fit

Check the rounded ends of the opening along with its overall length and width.

Assembly considerations

Route the cable and secure its supports before making the final seating check.

Design check

Select the compound for the actual substances and temperatures at the entry rather than assuming universal compatibility.

Photos illustrate structure or material only. The custom outline follows the opening's long and short axes, while the retaining profile matches the receiving wall. ETOL directly manufactures custom-shaped silicone and rubber parts to your requirements.