Custom manufacturing example · Silicone Rubber Seal HNBR Oil Seal Rubber Gasket

CUSTOM RUBBER & SILICONE MANUFACTURING

Silicone Rubber Seal HNBR Oil Seal 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 Silicone Rubber Seal is developed around the mating joint and its intended exposure. Where an HNBR oil-seal alternative is considered, the selected compound should be defined for the actual medium and operating conditions rather than treating the material names as interchangeable versions of the same performance.

ETOL can customize dimensions, hardness, color and material construction. Establish the sealing profile, available compression and the surface finishes that meet the gasket. Include any change in the joint during operation, such as movement or thermal exposure, in the evaluation of the completed arrangement.

Keep the mating faces clean during assembly and place the seal without twisting or stretching it out of its intended outline. Check for rubber trapped beside a locating feature as the joint closes. Use the specified assembly condition instead of extra force to conceal an uneven seat. During maintenance, inspect the contact pattern and material condition before replacement. If the seal has changed shape or its surface is damaged, review the exposure and mating geometry so a new component is selected for the cause as well as the visible defect.

Material options: HNBR / Silicone. Custom formulation and color for the intended contact conditions.
Hardness selection: Rubber: 30–90 Shore A. Silicone: 20–80 Shore A. Include any change in the joint during operation, such as movement or thermal exposure, in the evaluation of the completed arrangement.
Custom dimensions: Establish the sealing profile, available compression and the surface finishes that meet the gasket.
Fit & assembly: Keep the mating faces clean during assembly and place the seal without twisting or stretching it out of its intended outline.
Use & inspection: During maintenance, inspect the contact pattern and material condition before replacement.

Photos illustrate structure or material only. A Silicone Rubber Seal is developed around the mating joint and its intended exposure. 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.