Gas lubricated mechanical seal for cryogenic pump
285 John Crane

As the worldwide leader in spiral groove technology, John Crane is the first to utilize non-contacting seals in cryogenic applications. The John Crane spiral grooves enable the seal to operate on a gas film by gathering and compressing the vaporized liquid. As the gas is forced towards the closed groove ends, the pressure rises, which creates a cushion to separate the sealing faces. Since the seal faces do not contact, dry-running and face wear problems, which are associated with conventional contacting seals, are virtually eliminated.

Design Features

Sealol Bellows Design
Since the 1960s, our metal bellows experience in diverse industries, such as oil and gas, chemical, pulp and paper, municipalities, utilities, pharmaceutical, and food processing, has proven the soundness of Sealols welded metal bellows design.