Custom manufacturing example · Custom molded electrical silicone rubber long grommets

CUSTOM RUBBER & SILICONE MANUFACTURING

Custom molded electrical silicone rubber long grommets

A custom component for your assembly.

Define the mating surfaces, dimensions and working conditions. ETOL manufactures the part to the agreed design and material.

Factory direct
Made to order
Drawing & sample support

Share the part, its application and your estimated quantity.

Customize the fit, material and finish

Vulcanization workshop illustration with green molding presses and blue collection bins

Material & hardness

Selected for the contact, temperature and movement

Color & finish

Define the visible surfaces and intended color

Shape & dimensions

Develop holes, lips and walls around the mating parts

Mounting & fit

Match the attachment and installation method

Product Overview

Long rubber grommets made in silicone provide an extended protective interface around a cable crossing. Their length should match the supported region and the space available in the enclosure. A longer profile can move the exit away from the panel edge, but it also needs clearance along its full body.

Inspect the route with nearby hardware fitted. A bracket hidden behind the front panel can press into the middle of the grommet even when both ends appear clear. The cable should follow its intended direction without the long rubber section being held against a sharp feature.

Custom dimensions, color and material choices allow the part to suit the assembly. Plan how the cable termination passes through, and keep the sleeve aligned while its retaining area seats. After making internal connections, inspect for a bend forced into the rubber by a short cable run. During maintenance, look beyond the visible opening for rubbing along the extended portion. Replace the part only after correcting any concealed interference, preserving the intended length and mounting profile so protection remains continuous through the crossing.

Material options: Custom silicone or rubber formulation, with dimensions and color adapted to the mating component.
Hardness range: Silicone: 20–80 Shore A; rubber: 30–90 Shore A. Assess the grade against this fit requirement: Their length should match the supported region and the space available in the enclosure.
Custom profile & fit: Custom sleeve length and mounting profile, with the retained body sized to clear concealed features through the full crossing.
Assembly considerations: Inspect the route with nearby hardware fitted.
Design check: After making internal connections, inspect for a bend forced into the rubber by a short cable run.

Photos illustrate structure or material only. A longer profile can move the exit away from the panel edge, but it also needs clearance along its full body. ETOL directly manufactures custom-shaped silicone and rubber parts to your requirements.

Choosing a material or hardness? Explore the selection guide →

From part requirements to production

Define the part

Identify key dimensions, mating surfaces and quantity

Review material & tooling

Agree the compound and manufacturing approach

Evaluate the sample

Review the fit and agreed requirements in the assembly

Produce & inspect

Manufacture and check against the approved requirements

Review the intended assembly

Working conditions

Identify temperature, contact fluids and repeated movement.

Material and structure

Consider hardness together with wall thickness and support.

Installation

Check access, mating dimensions and the fitting sequence.

Ordering this custom component

Can the shape be adjusted to my mating parts?

Yes. Show the receiving opening, contact surfaces and clearance limits. We can review the dimensions and retaining features around the intended fit.

Which details should be agreed before tooling?

Agree the critical dimensions, material, hardness, visible surfaces and sample requirements. Explain how the part is installed and which interfaces control its function.

Can a sample help define the replacement?

A sample can help explain the structure. Compare it with the assembly because wear, swelling or compression may have changed its original dimensions.

How is the quotation for this part determined?

The material, part geometry, tooling, quantity and finishing affect the quotation. Include the intended batch size and delivery destination when describing your requirements.

DISCUSS THIS COMPONENT

Describe the part you need.

Share the fit, operating conditions and quantity with our manufacturing team.