Custom silicone push button with conductive membrane keypad

A custom silicone push button for a conductive membrane keypad forms part of a layered control assembly. The visible pressing surface, flexible rubber section, and underlying electrical interface should be designed together. Their relative positions determine how movement is transmitted when the user operates the key.

Establish the available distance and support between the rubber and the switch layers. Housing compression and internal backing can change that relationship after assembly. The button should move toward its intended operating area without the surrounding sheet shifting or the edge rubbing on the enclosure. Evaluate the completed stack with its actual fasteners and support surfaces.

Include successive presses and releases, especially if several controls are close together. A key should return freely before the next action rather than remain partly depressed by the bezel. Keep the underside and relevant contact surfaces free from residue during assembly. Select the silicone formulation for the exposed handling and cleaning conditions. Final electrical behavior belongs to the complete keypad and circuit arrangement, so a matching button outline alone does not establish compatibility with another switch construction.

Material options

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

Hardness selection

Silicone: 20–80 Shore A. The visible pressing surface, flexible rubber section, and underlying electrical interface should be designed together.

Custom dimensions

Final electrical behavior belongs to the complete keypad and circuit arrangement, so a matching button outline alone does not establish compatibility with another switch construction.

Fit & assembly

Evaluate the completed stack with its actual fasteners and support surfaces.

Use & inspection

Keep the underside and relevant contact surfaces free from residue during assembly.

Photos illustrate structure or material only. The button should move toward its intended operating area without the surrounding sheet shifting or the edge rubbing on the enclosure. ETOL directly manufactures custom-shaped silicone and rubber parts to your requirements.