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New-Seal^® Externally-Pressurized Porous (EPP) Media gas seals enable non-contact sealing for liquids, gases, fine powders, or slurries. Built on more than 25 years of experience with air bearing technology, New-Seal^® by New Way^® applies the same successful principles to provide a highly engineered, leak-free, low gas consumption, wear-free seal for rotating equipment.

Seals built on our EPP Media provide a robust solution with no routine maintenance and the ability to operate on air or process gases. The inherent permeability of graphite or silicon carbide restricts and dampens the flow of pressurized fluid, gas, liquid, steam, etc. The flow of fluid is further restricted by the gap itself creating hydrostatic pressure, forcing the surfaces apart, creating a non-contact barrier/seal which is impervious to anything at a lower pressure. In some applications, the seals can perform double duty, acting as both seals and bearings.

How Does it Work?

Turbomachinery seals utilize rotating and non-rotating components in order to create a non-contact, rotating seal that still restricts gas and fluid flow at up to 30 PSI. The typical double faced seal is composed of the following components:

1. Air Bearing inside of a flanged housing, which bolts to the casing of your machinery or driveshaft
2. A runner with an O-Ring mounted along its inner diameter that moves with the rotating shaft
3. A spacer, purposefully oversized to the runner which allows for clearance between the faces of the two air bearing surfaces
4. The outermost air bearing which acts as the seal housing

In effect it’s the internal O ring, spinning with the rotating shaft that provides the foundation for the seal. As the two halves of the air bearing are pressurized around the shaft, the 30 PSI of positive pressure repels fluid or particle intrusion into the bearing, maintaining non-contact sealing on both halves of the shaft