Custom manufacturing example · Custom molded flexible silicone rubber isolator bushings

CUSTOM RUBBER & SILICONE MANUFACTURING

Custom molded flexible silicone rubber isolator bushings

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

Silicone rubber isolator bushings provide a compliant section around a mounting feature. Their geometry can separate adjoining rigid parts while allowing the movement intended by the assembly. The radial fit, end faces and clamping arrangement all contribute to how the installed bushing responds.

Start with the receiving bore and the central component that passes through it. If both interfaces are squeezed heavily, the rubber may have little room to deform in the desired direction. An internal sleeve or other rigid feature, where part of the design, must maintain its planned relationship to the rubber instead of creating unintended contact elsewhere.

Check the installed assembly for alignment before evaluating its movement. Silicone and a flexible shape do not by themselves establish a vibration reduction or load rating. Test the supported equipment under its actual operating conditions. When dismantling, avoid pulling one flange through a sharp opening. Inspect the bore and flange roots for local wear that could allow the mounting feature to shift from its intended position.

Material options: Silicone. Custom formulation and color for the intended contact conditions.
Hardness selection: Silicone: 20–80 Shore A. Coordinate isolator bushing firmness with the bore, flange roots and intended mounting movement; evaluate the compliant response in the complete support.
Custom dimensions: Customize bore size, outside profile and flange-root geometry around the mounting feature and the available movement space.
Fit & assembly: Check the installed assembly for alignment before evaluating its movement.
Use & inspection: Inspect the bore and flange roots for local wear that could allow the mounting feature to shift from its intended position.

Photos illustrate structure or material only. The radial fit, end faces and clamping arrangement all contribute to how the installed bushing responds. 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.