Custom manufacturing example · Custom made molded rubber seal ring/waterproof silicone washer

CUSTOM RUBBER & SILICONE MANUFACTURING

Custom made molded rubber seal ring/waterproof silicone 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 rubber seal ring for a water-exposed connection should be evaluated in the orientation the finished assembly will use. Water can remain against one region longer than another, and other openings may be positioned differently once the product is turned or installed. The ring is one part of that complete boundary.

Establish the intended contact path around the receiving feature and identify the conditions the assembled joint must withstand. A splash exposure, retained liquid, and another defined service condition should not be treated as interchangeable simply because they all involve water. The custom profile and selected silicone must follow the actual requirement.

Observe the joint before dismantling it if moisture appears. Where water collects externally is not always the point where it first crossed the boundary. Inspect the mating connection and nearby features as well as the rubber. During reassembly, return the ring to its designated seat and assess the same orientation and conditions again. This keeps the evaluation tied to the finished connection rather than an unsupported waterproof claim for the loose part.

Material options: Silicone. Custom formulation and color for the intended contact conditions.
Hardness selection: Silicone: 20–80 Shore A. During reassembly, return the ring to its designated seat and assess the same orientation and conditions again.
Custom dimensions: Water can remain against one region longer than another, and other openings may be positioned differently once the product is turned or installed.
Fit & assembly: A rubber seal ring for a water-exposed connection should be evaluated in the orientation the finished assembly will use.
Use & inspection: A splash exposure, retained liquid, and another defined service condition should not be treated as interchangeable simply because they all involve water.

Photos illustrate structure or material only. The custom profile and selected silicone must follow the actual requirement. 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.