Custom manufacturing example · Neoprene rubber washer waterproof rubber sealing rings

CUSTOM RUBBER & SILICONE MANUFACTURING

Neoprene rubber washer waterproof rubber sealing rings

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 Neoprene rubber washer provides an annular rubber interface between mating faces. When used as a sealing ring, its inner opening, outside diameter and thickness need to match the joint together. The surrounding hardware should apply contact where intended instead of pushing the rubber into an unsupported gap.

Check that the washer lies flat before the joint is tightened. Its center must clear the passing component without bunching, and its outer edge should remain within the supported seating area. A fastener head or clamping face that is too small can distort only the middle of the washer rather than compressing the intended sealing band.

Custom dimensions and color are available, with material selected for the joint environment. Evaluate the seal using the assembled faces and the intended tightening method. During disassembly, inspect for cuts, extrusion at the edge or a permanent uneven profile. A damaged washer should be renewed; adding more tightening force to compensate can further distort the rubber and leave the underlying seating issue unchanged.

Material options: Neoprene. Custom formulation and color for the intended contact conditions.
Hardness selection: Rubber: 30–90 Shore A. A damaged washer should be renewed; adding more tightening force to compensate can further distort the rubber and leave the underlying seating issue unchanged.
Custom dimensions: When used as a sealing ring, its inner opening, outside diameter and thickness need to match the joint together.
Fit & assembly: A fastener head or clamping face that is too small can distort only the middle of the washer rather than compressing the intended sealing band.
Use & inspection: During disassembly, inspect for cuts, extrusion at the edge or a permanent uneven profile.

Photos illustrate structure or material only. When used as a sealing ring, its inner opening, outside diameter and thickness need to match the joint together. 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.