Custom manufacturing example · Rubber gasket seal rings/ nonstandard washers

CUSTOM RUBBER & SILICONE MANUFACTURING

Rubber gasket seal rings/ nonstandard washers

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

Rubber gasket seal rings create a compliant contact around a joint or opening. A nonstandard ring can follow the available sealing land, with dimensions, compound and color customized for the assembly. The useful ring geometry is determined by the surfaces that actually support and compress it.

Compare the inner opening and outside edge with the mating faces. The rubber should cover the intended contact region without projecting into a passage or beyond an unsupported edge. Thickness must suit the closed joint, including the available compression when fasteners or other retention are applied.

Choose the formulation for the substances and temperatures at the joint. When fitting, keep the ring flat and free of twists before bringing the faces together. Tightening should follow the assembly design rather than continue until rubber is visibly squeezed from the joint. During inspection, a contact mark concentrated on one side can indicate uneven seating. Correct the mating relationship before replacing the ring, and preserve the selected material and section when the joint is rebuilt for continued service.

Material options: Rubber. Custom formulation and color for the intended contact conditions.
Hardness selection: Rubber: 30–90 Shore A. Thickness must suit the closed joint, including the available compression when fasteners or other retention are applied.
Custom dimensions: A nonstandard ring can follow the available sealing land, with dimensions, compound and color customized for the assembly.
Fit & assembly: Tightening should follow the assembly design rather than continue until rubber is visibly squeezed from the joint.
Use & inspection: Correct the mating relationship before replacing the ring, and preserve the selected material and section when the joint is rebuilt for continued service.

Photos illustrate structure or material only. The useful ring geometry is determined by the surfaces that actually support and compress 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.