Custom manufacturing example · Custom mold compressing rubber washer/soft rubber seal

CUSTOM RUBBER & SILICONE MANUFACTURING

Custom mold compressing rubber washer/soft rubber seal

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

A soft rubber seal can be difficult to position in a narrow channel if the handling area is no wider than the working section. The custom design should allow the part to be installed without pinching it between a tool and the channel wall. Access is especially relevant when the seat lies below a surrounding rim.

Review the fitting method with the neighboring parts present. A seat that is easy to reach on an empty housing may become hidden after another component is installed. Where the equipment design allows, the assembly order can provide access without requiring the rubber to be pulled through an obstructed route.

Use the intended locating features to establish position and avoid pressing a sharp tool into the flexible edge. The selected compound must still fit the actual service environment; softness alone does not establish suitability. Before closing the joint, inspect the least accessible portion for a folded section. If removal repeatedly tears that same area, consider whether the service method reaches a suitable handling surface rather than treating the damage as unavoidable.

Material options: Rubber. Custom formulation and color for the intended contact conditions.
Hardness selection: Rubber: 30–90 Shore A. Use the intended locating features to establish position and avoid pressing a sharp tool into the flexible edge.
Custom dimensions: A soft rubber seal can be difficult to position in a narrow channel if the handling area is no wider than the working section.
Fit & assembly: A seat that is easy to reach on an empty housing may become hidden after another component is installed.
Use & inspection: If removal repeatedly tears that same area, consider whether the service method reaches a suitable handling surface rather than treating the damage as unavoidable.

Photos illustrate structure or material only. The custom design should allow the part to be installed without pinching it between a tool and the channel wall. 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.