Why Would You Want a Leaking Seal?

This may seem counterintuitive, but if you are sealing a rotating shaft under pressure, the answer may well be that you do!   The functioning of traditional non-pressurized radial lip seals is based on the formation of a sealing and…

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New Low-Friction Vee Packing

Automatic vee packing has been around since the 1920’s, when duck-and-rubber tubing was used to seal steam engines. Over the years, its use has expanded to seal plungers and rod and piston bores in a wide range of hydraulic applications…

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Autofrettage Seal

Autofrettage is a necessary step in the seal design production process for pressure-retaining vessels in which enormously high pressure is used to plastically yield internal portions of the part to produce internal compressive residual stresses once the pressure is released.…

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High Pressure Seals (PV) FAQ

What is PV? PV is simply Pressure x Velocity and is generally expressed in psi x fpm. How is it calculated? Pressure (psi) x Surface Velocity {shaft Ø (inches*.262) x rpm} (fpm) What does AHPS PV Rating mean? The AHPS…

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