Solon Manufacturing Company is a company that designs and manufactures industrial products used across industries employing bolted connections or requiring gas, pressure, or liquid density measurement. It offers Belleville springs and washers, which maintain bolt preload and keep bolted connections tight; electro-mechanical and pneumatic pressure switches, which control and monitor operating conditions and are critical in fluid or gas control; and SF6 gas density switches for high voltage circuit breakers, which measure and regulate SF6 gas density and leakage over a wide temperature range, and other products.