Rotary Seal Blog

Blogging is a way for Kalsi Engineering to provide up to date information more quickly than we can through traditional information channels like our seal handbook and static web pages. Here you will learn how we are working to solve industry problems through posts about new rotary seal products and posts about testing directed at specific industry problems and applications. You will also learn about the people who make it all happen, as we highlight the achievements and milestones in their lives. Visit our blog for the latest information on Kalsi-brand rotary seals and other Kalsi Engineering products and services.

High-speed rotary seal testing of Kalsi Seals at 1,800 RPM

In December we reported on successful high-speed rotary seal testing (1,290 RPM) with two Kalsi Seal geometries at dredging and submersible pump conditions. We recently completed even higher speed rotary seal testing with these seals.   As previously described, the high-speed rotary seals used in this testing have a significantly lower hydrodynamic pumping related seal […]

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Rotary seal testing of Kalsi Tanged Seals at 500 psi differential pressure

Kalsi Tanged Seals were developed to prevent rotary seals from circumferentially slipping in the seal groove which can lead to premature seal failure. Rotary seals slip more often in applications where the environment fluid pressure is greater than the seal lubricant pressure, a condition we refer to as reverse pressure. In June 2019 we reported […]

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Forrest Clay joins Kalsi Engineering in our Rotary Seal Testing Laboratory

Forrest Clay joined Kalsi Engineering’s Rotary Seals Testing Team at our Sugar Land, Texas, facility in October 2021. He is one of three laboratory technicians who set up, run, and disassemble rotary seal tests. Forrest also helps in the Kalsi Seal Production Department by inspecting rotary seals, thus ensuring the seals meet our rigorous quality […]

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High Speed Testing of Kalsi Seals

We recently completed high-speed rotary seal testing at dredging and submersible pump conditions on two Kalsi Seal geometries. The two rotary seal geometries were selected because they can operate in an abrasive fluid environment, and they have a significantly lower hydrodynamic pumping related seal leak rate than other Kalsi Seals used in high-speed applications. This […]

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Sealing Advancements for Rotating Control Devices (OTC-31159-MS)

Kalsi Engineering’s new technical paper, “Sealing Advancements for Rotating Control Devices” (OTC-31159-MS), was presented at the Offshore Technology Conference in Houston, Texas last month. The authors, A. Richie and L. Dietle, and their team have been developing seal technology targeted at increasing the pressure and speed capacity of self-contained Rotating Control Devices. Through extensive analysis, […]

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Kalsi Tanged Seals tested at 300°F

The Kalsi Tanged Seal is excellent at excluding pressurized abrasive fluid in equipment where the seal lubricant pressure is less than the abrasive fluid pressure. We refer to this pressure condition as “reverse pressure”. Many un-tanged seals slip circumferentially in the seal groove in reverse pressure operation. The seal tangs and mating pins in the […]

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SBIR Topic NX19-003 Award Announcement
Engineered Integral and Downstream Flow Conditioners

In 2019, Kalsi Engineering was awarded a contract with the Department of Navy (DoN) through the Small Business Innovation Research (SBIR) program to develop and refine flow conditioners for possible use on the Columbia Class submarines and other Navy and non-Navy applications. Flow conditioners are used to diminish swirl and expedite the velocity profile recovery […]

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Another extreme high-pressure rotary seal test

Kalsi Engineering continues to perform high-pressure rotary seal tests directed at increasing the operating life of high-pressure rotary swivels. Such equipment includes washpipe assemblies, cement swivels, hydraulic swivels, rotating control devices, and similar sealed rotary applications. We recently completed a 9,800 psi test with a pair of plastic lined high-pressure rotary seals. The high-pressure seals […]

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Early Butterfly Valve Testing with Incompressible Flow

Kalsi Engineering (KEI) conducted a water flow test program for butterfly valves for the nuclear industry as part of the EPRI Performance Prediction Methodology (PPM) between 1993 and 1994. The EPRI PPM program included model development for gate, globe, and butterfly valves. The water flow loop test program included scaling validation by comparing the predictions […]

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Development and Implementation of High Flow Gate Valve Model In KVAP

Kalsi Engineering, Inc. (KEI) pioneered the development of advanced gate valve methodology that is used to account for the flow-induced forces and complex interactions between the stem and gate, gate and guide rail, and gate and seats for opening and closings strokes. The methodology is especially designed for valves that are subject to high flow […]

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