Custom manufacturing example · round rubber gasket seals ring rubber washer shock absorber

CUSTOM RUBBER & SILICONE MANUFACTURING

round rubber gasket seals ring rubber washer shock absorber

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 round rubber gasket can provide an annular flexible interface, with its custom geometry developed for sealing or for a defined cushioning contact. These functions need different emphasis. A sealing face requires an uninterrupted contact boundary, while a cushioning role depends on how the load enters and compresses the rubber body.

For either arrangement, the central opening must clear the mating feature without forcing the ring off center. The surrounding material needs a supported seat, and its thickness should suit the available assembled space. A narrow edge resting over a recess can deform differently from the rest of the ring.

Specify the actual duty before selecting the compound and profile. A washer that fits around the same fastener may still behave differently under load. Fit the part without twisting it and examine the contact impression after initial assembly where practical. If the rubber is being pushed into the opening or beyond its outer seat, review the compression space rather than relying on additional tightening to secure the joint.

Material options: Rubber. Custom formulation and color for the intended contact conditions.
Hardness selection: Rubber: 30–90 Shore A. A sealing face requires an uninterrupted contact boundary, while a cushioning role depends on how the load enters and compresses the rubber body.
Custom dimensions: For either arrangement, the central opening must clear the mating feature without forcing the ring off center.
Fit & assembly: The surrounding material needs a supported seat, and its thickness should suit the available assembled space.
Use & inspection: A round rubber gasket can provide an annular flexible interface, with its custom geometry developed for sealing or for a defined cushioning contact.

Photos illustrate structure or material only. A narrow edge resting over a recess can deform differently from the rest of the ring. 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.