Supplied with sealing ring or washer, sealing boots are designed for front-panel mounting next to joysticks and provide IP 67 protection. Smaller Model U2252 can be mounted on levers of Series 12000, 3500, 3600, and 600 toggle switches; larger Model U2197 is intended for longer levers of Series 3600 and 600. Silicone models are available in red, green, white, and transparent for indicating various switch functions. Neoprene models are available in black.