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.

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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A new seal arrangement for RCDs

We have completed separate effects testing of the key components of a new rotary seal arrangement that enables rotary control devices (RCDs) to operate without the aid of an external lubricant pressurization system. The sealing arrangement is comprised of two rotary seals with a pressurized barrier lubricant between them, a small local compensating piston, and […]

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KEI Flow Loop Upgrade

KEI is committed to providing superb engineering services to our valued customers. In early 2021 KEI will complete an upgrade to our flow loop that will allow us to expand our services. The upgrade will reduce the back pressure on the test section and allow for extended Flow Coefficient (Cv) and Liquid Pressure Recovery Factor […]

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Testing BDRP Seals for high pressure hydraulic swivel service

Introduction to BDRP swivel seals BDRP seals (Bi-Directional Rotation and Pressure) are patented rotary seals engineered to generate hydrodynamic lubrication with high differential pressure acting from either side and with rotation in either direction. This makes them an excellent seal for high pressure hydraulic swivels. The key advantage that BDRP seals provide over Cap Seals […]

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KEI’s Continued Support of the International Nuclear Power Industry

Ryan Sicking of Kalsi Engineering was a presenter at the CANDU Owners Group virtual conference. The CANDU Owners Group was attended by plant engineers, valve manufacturers and other service providers. Ryan’s presentation addressed the key items identified during recent NRC inspections of US Nuclear power plants. Key Points of Ryan’s presentation are: The purpose of […]

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