Custom manufacturing example · Molded high quality rubber seal washer/neoprene flat gaskets

CUSTOM RUBBER & SILICONE MANUFACTURING

Molded high quality rubber seal washer/neoprene flat gaskets

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 rubber seal washer needs a clean, supported contact face around its receiving opening. Neoprene flat-gasket or silicone configurations should be selected for the actual joint rather than treated as equivalent because their ring outlines are similar. Material and geometry both affect the installed relationship.

Check the mating surfaces for burrs, steps or distortion before fitting. The washer should not be expected to bridge an excessive gap or hide damage through additional squeeze. Define the intended thickness and contact width along with the medium and operating conditions.

Place the selected part without twisting it around a locating feature, and evaluate the complete joint for its sealing duty. During servicing, inspect where the rubber has made contact and compare that pattern with the designed seat. A repeated cut at one position can indicate a receiving-surface defect. Correct it before fitting another washer so replacement does not simply repeat the same local damage in a new piece of rubber.

Material options: Neoprene / Silicone. Custom formulation and color for the intended contact conditions.
Hardness selection: Rubber: 30–90 Shore A. Silicone: 20–80 Shore A. Compare neoprene and silicone grades within the actual gasket design; similar outlines do not establish equivalent response to the closing load.
Custom dimensions: Define the intended thickness and contact width along with the medium and operating conditions.
Fit & assembly: Place the selected part without twisting it around a locating feature, and evaluate the complete joint for its sealing duty.
Use & inspection: Correct it before fitting another washer so replacement does not simply repeat the same local damage in a new piece of rubber.

Photos illustrate structure or material only. Neoprene flat-gasket or silicone configurations should be selected for the actual joint rather than treated as equivalent because their ring outlines are similar. 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.