Custom manufacturing example · RoHS compliant waterproof custom silicone numeric keypad

CUSTOM RUBBER & SILICONE MANUFACTURING

RoHS compliant waterproof custom silicone numeric keypad

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 numeric keypad should align each number with its switching position while maintaining the intended panel contact around the sheet. The housing openings and lower support determine how freely the keys move. A sealing requirement adds perimeter and fastening details that need to be coordinated with that movement rather than treated as a separate final adjustment.

Define key spacing, travel, locating features, and visible legends. Check readability at the installed viewing angle and leave enough clearance for off center presses. Any required material compliance should be assessed for the selected finished component, with water protection evaluated on the complete enclosure.

Assemble on clean supports without stretching the keypad. Test each number after final housing fastening, checking actuation and release. Assess the panel under its relevant water exposure using the actual contact arrangement. During maintenance, inspect the perimeter and key openings for damage or trapped residue. Preserve the intended section and locating geometry when replacing the sheet so a change made to improve sealing does not constrain numeric input elsewhere.

Material options: Silicone. Custom formulation and color for the intended contact conditions.
Hardness selection: Silicone: 20–80 Shore A. A sealing requirement adds perimeter and fastening details that need to be coordinated with that movement rather than treated as a separate final adjustment.
Custom dimensions: Define key spacing, travel, locating features, and visible legends.
Fit & assembly: Check readability at the installed viewing angle and leave enough clearance for off center presses.
Use & inspection: During maintenance, inspect the perimeter and key openings for damage or trapped residue.

Photos illustrate structure or material only. The housing openings and lower support determine how freely the keys move. 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.