Custom made silicone rubber single button membrane keyboard

A single button made in silicone rubber can provide the user contact for a membrane keyboard or control assembly. Although the layout contains only one operating position, the cap, flexible section, and membrane contact still need accurate alignment. There are fewer neighboring keys to reveal a positioning error, so the locating features carry particular importance.

Match the actuator underside to the selected switching arrangement and establish how the enclosure restrains the part. The visible cap should move through its opening without rubbing, while the stationary portion remains securely supported. Any spacer or overlay in the membrane assembly changes the working height and should be included in fit evaluation.

Test presses at the center and near the edges after the housing is fully assembled. Check for reliable release and unintended preload on the membrane. The molded button alone does not establish the electrical or environmental performance of the complete control. During servicing, protect the membrane layers from creasing and restore the actuator's original orientation and support rather than simply centering its top in the panel opening.

Material options

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

Hardness selection

Silicone: 20–80 Shore A. Although the layout contains only one operating position, the cap, flexible section, and membrane contact still need accurate alignment.

Custom dimensions

There are fewer neighboring keys to reveal a positioning error, so the locating features carry particular importance.

Fit & assembly

Any spacer or overlay in the membrane assembly changes the working height and should be included in fit evaluation.

Use & inspection

During servicing, protect the membrane layers from creasing and restore the actuator's original orientation and support rather than simply centering its top in the panel opening.

Photos illustrate structure or material only. Although the layout contains only one operating position, the cap, flexible section, and membrane contact still need accurate alignment. ETOL directly manufactures custom-shaped silicone and rubber parts to your requirements.