Custom manufacturing example · Silicone rubber seal ring/waterproof colored rubber thick washer

CUSTOM RUBBER & SILICONE MANUFACTURING

Silicone rubber seal ring/waterproof colored rubber thick washer

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 colored rubber thick washer occupies a defined amount of space between mating parts and can also serve a sealing role when the joint is designed for it. Custom dimensions and color options allow the component to follow the assembly and distinguish variants. Thickness should be selected from the available closing space rather than assumed to improve the seal.

Check how far the mating parts must travel to reach their intended position. The washer needs room for controlled deformation while remaining supported at its inner and outer edges. An excessively thick replacement can interfere with fastener engagement or prevent a cover from seating correctly.

Select the compound for the actual contact conditions, including water or other fluids. Fit the washer squarely and check its center opening before closing the joint. Color can help identify the intended version during assembly, but similar colors should not be treated as proof of equivalent dimensions. During servicing, inspect for extrusion, cuts, or permanent loss of shape and replace the part with the specified section.

Material options: Silicone. Custom formulation and color for the intended contact conditions.
Hardness selection: Silicone: 20–80 Shore A. Thickness should be selected from the available closing space rather than assumed to improve the seal.
Custom dimensions: Color can help identify the intended version during assembly, but similar colors should not be treated as proof of equivalent dimensions.
Fit & assembly: Fit the washer squarely and check its center opening before closing the joint.
Use & inspection: During servicing, inspect for extrusion, cuts, or permanent loss of shape and replace the part with the specified section.

Photos illustrate structure or material only. A colored rubber thick washer occupies a defined amount of space between mating parts and can also serve a sealing role when the joint is designed for it. 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.