U590 is a pushbutton silicone sealing boot designed for toggle or pushbutton switches with Ø 11.9-32 NS (15/32-32 UNS) bushings, specifically for 13000X778, 13000X768, and 8000-6X934 series switches. The boot features a black silicone material with a hex nut in black finish, providing excellent protection against dust, sand, and water ingress. It operates reliably across a temperature range of -40°C to +85°C, offering superior elasticity and temperature performance compared to neoprene alternatives. The boot dimensions are 12.80 mm in height with a 17 mm hex nut across flats, making it suitable for panel-mounted switch applications requiring robust environmental sealing.