PCB silicone keypads custom rubber keypad button

PCB silicone keypads operate within an assembly where the rubber, circuit board and front panel must maintain a defined relationship. The custom key layout should align with the switching positions after the board is secured, not only while the parts rest loosely together. Board support and keypad location should therefore be checked at the same stage.

Fit the pad into its intended locating features and inspect beneath its moving regions. Mounting hardware or a loose wire should not occupy the key travel space. Secure the board as intended, then bring the housing together without stretching the rubber to reach its openings. Check key heights at rest and test the full layout after closure. A local change near a board fastener can indicate spacing or support rather than a problem with the visible button. During maintenance, preserve the evaluated mounting arrangement and clean debris away before reassembly. If the response changes after the cover is tightened, reopen the unit and inspect the fit instead of applying further pressure to make the key work.

Material options

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

Hardness selection

Silicone: 20–80 Shore A. Secure the board as intended, then bring the housing together without stretching the rubber to reach its openings.

Custom dimensions

The custom key layout should align with the switching positions after the board is secured, not only while the parts rest loosely together.

Fit & assembly

A local change near a board fastener can indicate spacing or support rather than a problem with the visible button.

Use & inspection

During maintenance, preserve the evaluated mounting arrangement and clean debris away before reassembly.

Photos illustrate structure or material only. A local change near a board fastener can indicate spacing or support rather than a problem with the visible button. ETOL directly manufactures custom-shaped silicone and rubber parts to your requirements.