Custom manufacturing example · Custom made waterproof rubber washer/gaskets for sealing

CUSTOM RUBBER & SILICONE MANUFACTURING

Custom made waterproof rubber washer/gaskets for sealing

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

Gaskets for sealing need a closure arrangement that brings the mating surfaces into appropriate contact with the rubber. The same ring can behave differently between rigid, evenly supported faces and a flexible cover that closes unevenly around its fasteners. Joint behavior therefore belongs in the selection process.

Review the seating area, fastener positions, and available compression space. The gasket should remain located as the parts approach, without sliding into the passage or becoming pinched at one edge. Surface defects or debris that hold the faces apart cannot be resolved reliably by simply adding more tightening force.

Evaluate the finished joint for its specified water exposure and other operating conditions. On disassembly, compare the contact pattern around the gasket rather than looking only for a complete tear. A lightly contacted region opposite a heavily squeezed area can reveal uneven closure. Address the mating components or assembly method as appropriate before replacing the rubber, so the new gasket is not subjected to the same unfavorable contact pattern.

Material options: Rubber. Custom formulation and color for the intended contact conditions.
Hardness selection: Rubber: 30–90 Shore A. The same ring can behave differently between rigid, evenly supported faces and a flexible cover that closes unevenly around its fasteners.
Custom dimensions: Review the seating area, fastener positions, and available compression space.
Fit & assembly: Gaskets for sealing need a closure arrangement that brings the mating surfaces into appropriate contact with the rubber.
Use & inspection: Surface defects or debris that hold the faces apart cannot be resolved reliably by simply adding more tightening force.

Photos illustrate structure or material only. The gasket should remain located as the parts approach, without sliding into the passage or becoming pinched at one edge. 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.