A single-acting sealing element comprised of a U-shaped Turcon® ring and V-shaped metallic energizing finger spring. Suitable for reciprocating and light duty rotary movement. Compatible with most fluids and chemicals and efficient in a wide range of temperatures, it offers low friction with no stick-slip, minimal break out force and high wear resistance.--Single-acting, spring-energized plastic U-Cup and a V-shaped corrosion-resistant spring. Has an asymmetric seal profile.