Spring Energized Rod Seals

Canted Coil Spring Energized Rod Seals employ a specialty wound wire spring installed in a polymer jacket. The canted coil is unique in the sealing industry because of its semi-linear load curve. As an engineered loading device, canted coil springs display a very constant load over a large deflection range. This feature allows Canted Coil Spring Seals to operate in friction-sensitive applications like HPLC, encoders, and flap actuators with consistent performance. Seals used in battery-operated devices utilize these seals, minimizing seal friction and optimizing battery life. On the other end of the spectrum, Canted Coil Spring Seals are used with heavy load springs for use in highly viscous media such as epoxies and urethanes. 

Cantilever Spring Energized Rod Seals use a V-shaped spring embedded in a polymer jacket. When installed, the compressed V-spring provides sealing energy for effective sealing. They commonly replace rubber U-cups that fail due to chemical attack, extreme temperatures, friction, or wear.
These seals are ideal for reciprocating applications like shocks, hydraulic cylinders, pumps, and compressors. The spring design concentrates load at the seal's front, making it suitable for environmental exclusion and scraping viscous media. For FDA applications, the spring cavity can be filled with silicone.

Helical Spring Energized Rod Seals are comprised of a wound ribbon metal spring installed in a polymer jacket. This helical shape spring affords a relatively high load versus deflection range resulting in a seal product that can provide very tight sealing. As a highly loaded product, Helical Spring Seals should be considered when dynamics are very slow or static. Examples are in stems seals and in cryogenic valves where additional force is required to overcome thermal effects.