Switch boots protect switches from contaminants such as dirt, dust, gas, and liquids.  They are generally tough, pliable silicone rubber devices for toggle, pushbutton, rocker and rotary switches. Switch boots protect a switch and seal its mounting hole against the ingress of washdown, salt water, lubricants, cleaning solvents, dust, dirt, grease, and other environmental elements. Switch boots are designed for a variety of commercial, industrial, and military applications. They are available in two configurations: half boot and full boot. Half boots are designed to allow the switch actuator to protrude from the seal. Full boots completely protect and cover the switch actuator.