Custom manufacturing example · Square molded rubber silicone gasket/colorful silicone ring washer

CUSTOM RUBBER & SILICONE MANUFACTURING

Square molded rubber silicone gasket/colorful silicone ring 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 square silicone gasket in ring-washer form follows a perimeter with straight sides and corner transitions. This custom molded component can be sized around a matching seat, with color options available for identification or product appearance. The width of the ring and its thickness need to suit the load applied by the mating parts.

Corners deserve separate attention during selection. A ring that matches the overall width may still differ in corner radius or in the size of its central opening. Those differences affect how evenly the washer rests and whether its edge remains supported as the assembly closes.

Choose the material for the joint's contents, temperature, and cleaning conditions. Position the washer without stretching one corner into place, then check all four sides before closing the parts. Where fasteners establish compression, use the assembly's intended tightening method to avoid loading one area first. During replacement, compare the full outline and section with the required seat. Color can distinguish variants, but the dimensional and material match should remain the basis for installation.

Material options: Silicone. Custom formulation and color for the intended contact conditions.
Hardness selection: Silicone: 20–80 Shore A. Position the washer without stretching one corner into place, then check all four sides before closing the parts.
Custom dimensions: A ring that matches the overall width may still differ in corner radius or in the size of its central opening.
Fit & assembly: Where fasteners establish compression, use the assembly's intended tightening method to avoid loading one area first.
Use & inspection: During replacement, compare the full outline and section with the required seat.

Photos illustrate structure or material only. A ring that matches the overall width may still differ in corner radius or in the size of its central opening. 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.