The spring energized seal is a spring actuated pressure assisted sealing device consisting of a PTFE(or other polymer)jacket, partially encapsulating a corrosion resistant metal spring energizer.
When the seal ring is seated onto the shaft or in the gland/housing, spring is under compression, forcing the jacket lips against the sealing surfaces thereby creating a leak-tight seal. The spring provides permanent resilience to the seal jacket and compensates for material wear and hardware misalignment or eccentricity. System pressure also assists in energizing the seal jacket. Spring loading, assisted by system pressure provides effective sealing performance at both low and high pressure.
The seal jackets are precision machined from PTFE, filled PTFE composites and other high performance polymers, which are serviceable at temperatures ranging from cryogenic to +300°C and are inert to virtually all chemicals except molten alkali metals, fluorine gas at high temperature and chlorine trifluoride(CIF3). The energized spring seals are available with a variety of spring energizers, which are available for a variety of materials , including 301SS, 302SS, 304SS, 316SS, Hastelloy C, Inconel 718.
The spring energized seals have been used in a multitude of applications where durability, resistance to chemicals and operation at temperature extremes is crucial. Reduce friction, operate in harsh environments, reduce downtime and extend equipment service life.
Typical spring energizers:
Type UCP Type VCP Type OWS Type OBS