The U1654 is a black silicone sealing boot designed to protect pushbutton switches from elements such as dust, sand, and water. It is specifically made for switches with a Ø 12 x 0.75 SI bushing and includes a nickel-plated brass hex nut. The silicone construction provides an operational temperature range from -40 °C to +85 °C, ensuring excellent elasticity and mechanical resistance. This boot is ideal for use with APEM 1200, 4700, and 4800 series switches in various demanding environments.