Custom manufacturing example · Custom membrane switch keypads carbon pills

CUSTOM RUBBER & SILICONE MANUFACTURING

Custom membrane switch keypads carbon pills

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

Membrane switch keypads need their flexible key geometry coordinated with the switching arrangement beneath them. A carbon-pill version uses a defined conductive contact feature, which must agree with the intended circuit interface. Custom molding can position the key field and its supports within the product housing.

Establish the actual contact construction before setting travel and support spacing. Different switching layers or contacts should not be treated as interchangeable simply because the outside keys look alike. The molded component must move far enough to operate the selected interface and return without being held down by the panel.

Check the assembled keypad after the enclosure is secured, including presses near key edges. Keep the switching surfaces clear of dust, oils and adhesive during handling. If response changes after closure, review layer alignment and compression before altering the contact material. During maintenance, restore the intended order and position of the components. A replacement should preserve the key layout, contact placement and supporting geometry so the complete switch assembly retains the operation for which it was developed.

Material options: Rubber. Custom formulation and color for the intended contact conditions.
Hardness selection: Rubber: 30–90 Shore A. If response changes after closure, review layer alignment and compression before altering the contact material.
Custom dimensions: Custom molding can position the key field and its supports within the product housing.
Fit & assembly: Check the assembled keypad after the enclosure is secured, including presses near key edges.
Use & inspection: A replacement should preserve the key layout, contact placement and supporting geometry so the complete switch assembly retains the operation for which it was developed.

Photos illustrate structure or material only. The molded component must move far enough to operate the selected interface and return without being held down by the panel. 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.