Custom manufacturing example · Flexible silicone rubber dust stoppers/special rubber plugs

CUSTOM RUBBER & SILICONE MANUFACTURING

Flexible silicone rubber dust stoppers/special rubber plugs

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

Special rubber plugs can follow an opening that does not suit a simple round stopper. The custom silicone profile can account for an irregular outline, a nearby obstruction, or a shaped recess around the hole. The aim is to establish a repeatable closure position without stretching a generic plug into a different shape.

Orientation should be easy to recognize before insertion. A profile with unequal sides or a shaped head may fit only one way, and forcing it in another orientation can fold the body beneath an apparently seated face. Consider the installation view and access after surrounding components are fitted. The designated pressing and removal surfaces should remain reachable in that final arrangement.

Sharp transitions in the receiving opening need careful finishing so they do not cut the rubber. Keep the dust contact area clean before fitting and inspect the corners when the plug is removed. Custom material, hardness, and color should follow the actual environment and handling frequency. A distinctive shape is useful only when its less visible retaining features also match the opening consistently.

Material options: Custom silicone compound; formulation and geometry developed together.
Hardness selection: Silicone options: 20–80 Shore A. A profile with unequal sides or a shaped head may fit only one way, and forcing it in another orientation can fold the body beneath an apparently seated face.
Custom geometry: The custom silicone profile can account for an irregular outline, a nearby obstruction, or a shaped recess around the hole.
Fit evaluation: Consider the installation view and access after surrounding components are fitted.
Color & OEM: Custom colors; OEM identification positioned outside closure contact surfaces.

Photos illustrate structure or material appearance only. A profile with unequal sides or a shaped head may fit only one way, and forcing it in another orientation can fold the body beneath an apparently seated face. 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.