silicone rubber button keypads with conductive pills

Conductive pills beneath silicone rubber buttons need to arrive accurately over their corresponding circuit contacts. In a multi-button sheet, the locating arrangement must preserve that relationship across the whole array. A correctly centered visible key does not always reveal a shifted underside if the sheet has been stretched during fitting.

Position the board, keypad references, and enclosure apertures as a coordinated assembly. Stationary support areas should hold the part without constraining each button's flexible section. Check that any larger controls do not move the surrounding sheet enough to affect nearby contact alignment.

Test every button after normal fastening, including presses near the accessible edges. Observe reliable release and unintended neighboring input as well as initial activation. Keep the underside away from dust and handling residue during assembly or replacement. If electrical response changes after servicing, inspect the seating and contact condition before assuming the board is at fault. Restoring a clean, unstretched fit can be essential to recovering the intended relationship between the pills and their mating patterns.

Material options

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

Hardness selection

Silicone: 20–80 Shore A. A correctly centered visible key does not always reveal a shifted underside if the sheet has been stretched during fitting.

Custom dimensions

Stationary support areas should hold the part without constraining each button's flexible section.

Fit & assembly

Check that any larger controls do not move the surrounding sheet enough to affect nearby contact alignment.

Use & inspection

If electrical response changes after servicing, inspect the seating and contact condition before assuming the board is at fault.

Photos illustrate structure or material only. In a multi-button sheet, the locating arrangement must preserve that relationship across the whole array. ETOL directly manufactures custom-shaped silicone and rubber parts to your requirements.