Custom membrane keypad capacitive touch keypad

A Custom membrane keypad provides a tailored control surface for the intended electronic interface. Where capacitive touch sensing is used, the membrane's installed position and the layer arrangement beneath it need to remain consistent with the electronics. The design should not be assessed only by how the loose silicone part looks on a bench.

Place the membrane on its intended support without stretching between locating features. Check for an area that bows above the sensing plane or becomes trapped beneath a retaining edge. The visible control positions should correspond to the actual sensing zones. Evaluate the complete assembly using the touch approach and movement expected in use, including transitions between adjacent targets. During cleaning or servicing, preserve the intended spacing and remove particles from the seating area before reassembly. A membrane that has developed a crease should be reviewed for replacement rather than forced flat by tightening the housing. Keep the evaluated material and profile associated with the electronic configuration when the control layout is revised.

Material options

Silicone. Custom formulation and color for the intended contact conditions.

Hardness selection

Silicone: 20–80 Shore A. Evaluate the complete assembly using the touch approach and movement expected in use, including transitions between adjacent targets.

Custom dimensions

Where capacitive touch sensing is used, the membrane's installed position and the layer arrangement beneath it need to remain consistent with the electronics.

Fit & assembly

Place the membrane on its intended support without stretching between locating features.

Use & inspection

During cleaning or servicing, preserve the intended spacing and remove particles from the seating area before reassembly.

Photos illustrate structure or material only. A Custom membrane keypad provides a tailored control surface for the intended electronic interface. ETOL directly manufactures custom-shaped silicone and rubber parts to your requirements.