Custom manufacturing example · Rubber oil seal epdm rubber seal rings waterproof gasket

CUSTOM RUBBER & SILICONE MANUFACTURING

Rubber oil seal epdm rubber seal rings waterproof gasket

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

Rubber seal rings occupy the interface between mating parts, where controlled compression helps close the gap around a joint. Custom sizes and material options allow the ring to be matched to the groove and the service medium. The correct choice depends on the complete sealing arrangement, including whether the surfaces remain stationary or move during operation.

Material selection comes before assuming a ring can serve in an oil application. The specific fluid, temperature, and exposure duration must suit the chosen compound; EPDM should not be treated as a universal substitute for an oil-compatible seal material. Ring dimensions also need to correspond to the groove so the rubber has space to deform without being excessively squeezed or left loose.

Before assembly, clean the mating surfaces and inspect the groove for damage. Avoid twisting the ring or dragging it over sharp threads. Tighten the joint in the sequence required by its design and check the completed assembly under its intended operating conditions. Replacing only the rubber will not correct a damaged or misaligned sealing surface.

Material options: EPDM. Custom formulation and color for the intended contact conditions.
Hardness selection: Rubber: 30–90 Shore A. Ring dimensions also need to correspond to the groove so the rubber has space to deform without being excessively squeezed or left loose.
Custom dimensions: Tighten the joint in the sequence required by its design and check the completed assembly under its intended operating conditions.
Fit & assembly: Rubber seal rings occupy the interface between mating parts, where controlled compression helps close the gap around a joint.
Use & inspection: Before assembly, clean the mating surfaces and inspect the groove for damage.

Photos illustrate structure or material only. Rubber seal rings occupy the interface between mating parts, where controlled compression helps close the gap around a joint. 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.