Custom manufacturing example · Compressed molding flexible rubber gaskets/sealing washer

CUSTOM RUBBER & SILICONE MANUFACTURING

Compressed molding flexible rubber gaskets/sealing 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

Flexible rubber gaskets can be molded to follow the actual closing surfaces. A custom outline can follow a joint that has corners, fastener positions, or openings that would make a simple ring unsuitable. The aim is to place useful sealing material along the contact path while preserving the space needed for the surrounding assembly.

Compare the gasket shape with the finished mating faces, including the available sealing width around each hole. Thickness should suit the closing gap and the way force is applied. Making the part thicker to cover an uneven surface can also change fastener engagement or let the gasket spread into an adjacent passage.

Place the gasket without stretching its outline into alignment. Tighten the joint in a manner that brings the faces together evenly, and check that the edge has not extruded into a moving or open area. Material selection should address the actual medium, temperature, and compression cycle. When reopening the assembly, inspect both the gasket and the mating faces before deciding whether the sealing arrangement is ready for reuse.

Material options: Rubber. Custom formulation and color for the intended contact conditions.
Hardness selection: Rubber: 30–90 Shore A. Thickness should suit the closing gap and the way force is applied.
Custom dimensions: A custom outline can follow a joint that has corners, fastener positions, or openings that would make a simple ring unsuitable.
Fit & assembly: The aim is to place useful sealing material along the contact path while preserving the space needed for the surrounding assembly.
Use & inspection: When reopening the assembly, inspect both the gasket and the mating faces before deciding whether the sealing arrangement is ready for reuse.

Photos illustrate structure or material only. A custom outline can follow a joint that has corners, fastener positions, or openings that would make a simple ring unsuitable. 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.