Custom manufacturing example · Hot-selling waterproof rubber flange washer/silicone seal ring

CUSTOM RUBBER & SILICONE MANUFACTURING

Hot-selling waterproof rubber flange washer/silicone seal ring

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 flange washer provides a custom sealing element between matching flange surfaces. Its center opening and outer boundary should follow the supported contact area, while the thickness and compound suit the intended joint. The way the flange closes determines how the washer is loaded around its circumference.

Check the mating faces for damage and remove loose contamination before assembly. Position the washer so that it does not obstruct the intended opening or extend unsupported into a gap. Where fasteners control closure, use the flange assembly's prescribed sequence and settings to establish the intended compression.

Water exposure or other fluid service should be assessed on the completed joint under its actual conditions. A washer cannot correct misaligned faces or a damaged sealing land simply by being compressed harder. During maintenance, inspect the removed part for cuts and uneven permanent deformation, which can help reveal an installation problem. Select a replacement with the required dimensions and compound rather than reusing a visibly distorted washer or stacking additional pieces into the joint.

Material options: Silicone. Custom formulation and color for the intended contact conditions.
Hardness selection: Silicone: 20–80 Shore A. Where fasteners control closure, use the flange assembly's prescribed sequence and settings to establish the intended compression.
Custom dimensions: Position the washer so that it does not obstruct the intended opening or extend unsupported into a gap.
Fit & assembly: Check the mating faces for damage and remove loose contamination before assembly.
Use & inspection: During maintenance, inspect the removed part for cuts and uneven permanent deformation, which can help reveal an installation problem.

Photos illustrate structure or material only. Where fasteners control closure, use the flange assembly's prescribed sequence and settings to establish the intended compression. 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.