Customized silicone rubber push button keypad with conductive pills

A custom silicone rubber keypad with conductive pills combines molded buttons with discrete contact elements on the underside. The pill positions should correspond to the circuit contact areas, while the visible keys align with the housing. The supporting sheet keeps those relationships consistent throughout the layout.

The housing and backing structure need to locate the rubber without stretching it. A small shift in the sheet can affect several contacts, even if the key tops still appear close to their openings. Check the final assembled position with the intended fasteners and supports, then assess each key's movement toward its corresponding contact.

Include presses near accessible edges and sequences that move between neighboring keys. A tilted key should remain within the motion expected by the contact design, and the surrounding sheet should not pull an adjacent button into action. The pills and circuit must be evaluated together for the required electrical behavior; the molded sheet alone does not define that response.

Printed, embossed, debossed, or colorfilled legends can be selected for the interface. Keep them coordinated with the electrical positions and installed orientation. Protect the pill surfaces from residue during assembly, and clean the exposed keypad without damaging its moving edges. Replacement should preserve the complete sheet outline and pill arrangement rather than only match the visible control labels.

Material options

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

Hardness selection

Silicone: 20–80 Shore A. The pills and circuit must be evaluated together for the required electrical behavior; the molded sheet alone does not define that response.

Custom dimensions

A small shift in the sheet can affect several contacts, even if the key tops still appear close to their openings.

Fit & assembly

Check the final assembled position with the intended fasteners and supports, then assess each key's movement toward its corresponding contact.

Use & inspection

Protect the pill surfaces from residue during assembly, and clean the exposed keypad without damaging its moving edges.

Photos illustrate structure or material only. A tilted key should remain within the motion expected by the contact design, and the surrounding sheet should not pull an adjacent button into action. ETOL directly manufactures custom-shaped silicone and rubber parts to your requirements.