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Back To Basics: Mechanical Seals for Water and Wastewater

Mechanical seals require clean water, or other compatible liquid, for the lubrication of the seal faces. The faces in a typical mechanical seal are lubricated with a boundary layer of gas or liquid between the faces. ...<< more>>

Mechanical seals under vacuum - eng-tips

There is a single seal fitted and occasionally the seal chamber will see vacuum conditions. The question is will air ingress through the mechanical seal face during operation. Pump operates at 3000 rpm, seal chamber pressure normally 200Kpa. ...<< more>>

Are You Choosing the Right Seal for Your Vacuum Pump

In many vacuum applications where mechanical seals are necessary, we utilize our extended life lip seals to reduce vacuum at the seal interface. This design increases life and performance of the mechanical seal, thereby increasing MTBR of the vacuum pump. ...<< more>>

Liquid-ring pump - Wikipedia

A liquid-ring pump is a rotating positive-displacement pump.. They are typically used as a vacuum pump, but can also be used as a gas compressor.The function of a liquid-ring pump is similar to a rotary vane pump, with the difference being that the vanes are an integral part of the rotor and churn a rotating ring of liquid to form the compression-chamber seal. ...<< more>>


Many liquid-ring vacuum pumps that incorporate a standard packing or gland arrangement for shaft sealing are also fitted with lantern rings and a gland connection provided for cooling liquid. ...<< more>>

Water-sealed Liquid Ring Medical Vacuum Systems - EMSE

A water ring is required to create a tight seal between the tip of the impeller blades and the pump housing. There are (3) different ways a liquid ring pump utilizes the sealing water. “Once thru re-circulating” system: sealing water is introduced into the pump, discharged, and sent directly down the drain. ...<< more>>

Technical Support - Vacuum Pump Manufacturer - PPI Pumps

If mechanical seals are employed, a supply of cooling and flush liquid is also required. It is recommended that a separate and clean source of seal liquid for mechanical seals is used. Double mechanical seals require a monitoring device to detect a leak on the inboard seal. ...<< more>>

PUMPS AND BOOSTERS - Tuthill Vacuum & Blower

KTC-112 is water-cooled with optional air-cooling systems. Adjustable gas ballast valves are standard for handling water and other vapor loads. KTC pumps feature triplex piston design: dynamically balanced and practically vibration free. ...<< more>>

Liquid Ring Vacuum Pumps with Mechanical Seals - Brinkster

ing out of the pump, it is recommended to remove and replace the mechanical seal, bearing housing and bearings one side at a time, or make provision to secure the shaft so it does not slide out of the pump....