Molded auto built-in rubber buttons/silicone prototype buttons

Silicone prototype buttons for an automotive control should be evaluated with the surrounding trim fully assembled. The visible opening, internal support and underlying actuator establish the working stack. A button that moves correctly in an open housing may rub or become preloaded when the trim is clipped and fastened into place.

Custom shape and dimensions allow the molded part to follow the control layout. Check the position from the user's normal approach, including presses near the edges of a built in button. The surrounding trim should provide clearance without allowing the key to lean excessively.

Use the prototype to examine the complete assembly sequence as well as button response. Confirm that locating features remain seated when the cover closes and that nearby parts do not shift the silicone. During repeated operation, inspect for contact marks around the opening or a button that returns unevenly. Select the material for the vehicle location and cleaning routine. Any change to the trim or internal support should be followed by another fit check before the prototype geometry is finalized.

Material options

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

Hardness selection

Silicone: 20–80 Shore A. Check the position from the user's normal approach, including presses near the edges of a built in button.

Custom dimensions

Custom shape and dimensions allow the molded part to follow the control layout.

Fit & assembly

Any change to the trim or internal support should be followed by another fit check before the prototype geometry is finalized.

Use & inspection

During repeated operation, inspect for contact marks around the opening or a button that returns unevenly.

Photos illustrate structure or material only. The surrounding trim should provide clearance without allowing the key to lean excessively. ETOL directly manufactures custom-shaped silicone and rubber parts to your requirements.