The Turcon Variseal M2 is a single-acting, spring-energized seal that features a Turcon U-cup. It is resistant to chemicals and fluids, has low friction, and handles temperature changes well. It is used in applications like valves, pumps, and dosing devices. The seal ring is typically made from Turcon T40 material and the spring is stainless steel. It is suitable for pharmaceutical and food applications.