Heat resistant silicone rubber keypad conductive button

A silicone rubber keypad used near heat should be selected for the temperature at the actual control location. The housing, support, and conductive contact arrangement can all be affected by the operating cycle, so material selection and key clearance need to be considered together. The completed assembly should retain its intended movement and input behavior through the relevant conditions.

Define key travel, locating features, and the lower contact position. Leave enough clearance around moving walls after final enclosure fastening. Select markings and colors for the control function while accounting for the actual cleaning exposure.

Fit the keypad without stretch and keep contacts clean. Test actuation and release with the intended electronics at the relevant operating states. During maintenance, distinguish rubbing caused by changing clearance from surface deterioration of the rubber. A softer or thicker replacement should not be used automatically, since it can alter contact at rest and travel without correcting the thermal or support condition affecting the original keypad.

Material options

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

Hardness selection

Silicone: 20–80 Shore A. The completed assembly should retain its intended movement and input behavior through the relevant conditions.

Custom dimensions

Define key travel, locating features, and the lower contact position.

Fit & assembly

The housing, support, and conductive contact arrangement can all be affected by the operating cycle, so material selection and key clearance need to be considered together.

Use & inspection

Select markings and colors for the control function while accounting for the actual cleaning exposure.

Photos illustrate structure or material only. The housing, support, and conductive contact arrangement can all be affected by the operating cycle, so material selection and key clearance need to be considered together. ETOL directly manufactures custom-shaped silicone and rubber parts to your requirements.