Xymox membrane switches can be designed with a complete seal to the housing which eliminates potential leak paths.
Using a patented construction, the tail travels from the top switching layer and through the two bottom layers of the switch and breaks out of the back of the keypad - not off the edge - and a complete adhesive perimeter seal is maintained. While not intended for immersion, liquid splashes, as well as dust and other airborne contaminants, are prevented from ever entering the housing via the switch. Switch contact and circuitry are protected from the environmental hazard which keyboard surfaces normally encounter.
