Style 780 represents an important evolution on welded metal bellows mechanical seals.
It is structured as a cartridge mounted seal with metal bellows, available in Hastelloy C276, Inconel 718 or AM350, which grants unique features in terms of mechanical resistance, stress tolerance and high flexibility.
Thanks to the exclusive "spring-lock" system, the rotary part can be removed from the sleeve for maintenance or replacement.
The gland is equipped with ports for flush and quench. The seal is available in two versions, “F” and “Q”, equipped with respectively a throttle bushing and a lip seal for quench fluid containment.
Sleeve and outside ring are manufactured as single piece lathed from a solid SS316 bar: this solution grants high strength and resistance to vibrations, impossible to achieve with traditional two-pieces systems.