CUSTOM RUBBER & SILICONE MANUFACTURING

Flexible oil-proof rubber seal ring/molded black rubber 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

A molded black rubber gasket can be customized around a joint exposed to oil, with the material selected for the specific fluid and operating conditions. Color identifies the appearance of the component; it does not establish chemical compatibility. The gasket outline and section should follow the surfaces that hold it in place.

Distinguish occasional splashes from continuous contact when selecting the compound. Temperature, additives in the fluid, and the cleaning method can also affect suitability. Once those conditions are defined, choose the hardness and thickness around the compression available in the joint.

Keep the sealing path supported and free of interruptions. Bolt holes, narrow bridges, and nearby edges should be included in the shape rather than trimmed during assembly. Fit the gasket without stretching it across its locating features, then close the joint using the intended sequence. During servicing, look for swelling or permanent changes in the contact section. Replace the gasket with the specified material and profile if the operating fluid changes or the original part no longer fits its seat correctly.

Material options
Rubber. Custom formulation and color for the intended contact conditions.
Hardness selection
Rubber: 30–90 Shore A. Fit the gasket without stretching it across its locating features, then close the joint using the intended sequence.
Custom dimensions
The gasket outline and section should follow the surfaces that hold it in place.
Fit & assembly
Bolt holes, narrow bridges, and nearby edges should be included in the shape rather than trimmed during assembly.
Use & inspection
Replace the gasket with the specified material and profile if the operating fluid changes or the original part no longer fits its seat correctly.

Photos illustrate structure or material only. A molded black rubber gasket can be customized around a joint exposed to oil, with the material selected for the specific fluid and operating conditions. 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

01

Define the part

Identify key dimensions, mating surfaces and quantity

02

Review material & tooling

Agree the compound and manufacturing approach

03

Evaluate the sample

Review the fit and agreed requirements in the assembly

04

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.

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Send your requirements
and selected drawings

All files and photos you share with us are handled under strict confidentiality procedures and will not be disclosed to any third party.

DISCUSS THIS COMPONENT

Request a Custom Quote

You can also email us directly at [email protected].