Custom manufacturing example · Custom molded rubber washer/rubber seal O-ring for Electronic equipment

CUSTOM RUBBER & SILICONE MANUFACTURING

Custom molded rubber washer/rubber seal O-ring for Electronic equipment

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 O-ring near an electronic connector must coexist with the connector's mounting and mating movement. Its seat may be circular even when the surrounding housing is not. The custom ring should remain located while the relevant components reach their intended positions.

Check which part carries the groove and whether another component moves past it during assembly. The connector should not scrape a sharp edge across the ring or hold one region out of its seat. Any retaining hardware needs to preserve the intended relationship between the connector and enclosure rather than use the rubber as an arbitrary spacer.

Evaluate that complete interface with the connector installed, including the movement needed to attach and remove its mating part. Select the compound for the actual environment around the opening. A sealing O-ring does not by itself establish an electrical insulation rating. During service, inspect the groove-side surface if the connector has been removed or repositioned, and restore the specified rounded section instead of substituting a flat washer with an approximately matching diameter.

Material options: Rubber. Custom formulation and color for the intended contact conditions.
Hardness selection: Rubber: 30–90 Shore A. Evaluate that complete interface with the connector installed, including the movement needed to attach and remove its mating part.
Custom dimensions: Check which part carries the groove and whether another component moves past it during assembly.
Fit & assembly: The connector should not scrape a sharp edge across the ring or hold one region out of its seat.
Use & inspection: During service, inspect the groove-side surface if the connector has been removed or repositioned, and restore the specified rounded section instead of substituting a flat washer with an approximately matching diameter.

Photos illustrate structure or material only. A rubber seal O-ring near an electronic connector must coexist with the connector's mounting and mating movement. 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.