Rotary Seal Blog

Testing RCD seals to collect leakage data

Introduction to the test fixture As described in previous blogs, Kalsi Engineering has a 10.50” fixture for testing full scale RCD seals. This helps to avoid scaling issues that may occur when testing on smaller fixtures. For example, the thermal mass and conductivity of our 10.50” fixture is similar to an RCD mandrel, which allows […]

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Kalsi Engineering employee discovers lost history of Fort Cumberland

Many customers know that Kalsi Engineering employee Lannie Dietle has discovered numerous improvements to our rotary seals and our seal implementation practices. Few know that he is also a historian who has made several important discoveries concerning early events in western Maryland and Pennsylvania. His second history book, released in December, 2016 by the Cumberland Heritage […]

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Kalsi Engineering, Inc. Develops Validated Methodology to Predict Flow-Induced Forces in Balanced Globe Valves

Kalsi Engineering, Inc. (KEI), under contract from the Electric Power Research Institute, has developed a new validated methodology for predicting the flow-induced forces in balanced globe valves used in commercial nuclear power plants.  These valves are used in critical-to-safety applications and previous methodologies used by the industry were limited in application or too conservative to […]

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Testing a large diameter floating backup ring in RCD operating conditions

Our inaugural test of 10.50” (266.7mm) floating backup rings is complete, and several lessons were learned. The purpose of the test was to debug the new test fixture configuration, to evaluate the suitability of steel as the bearing material of the backup ring, and to evaluate how PN 381-35-11 rotary seals perform when used when […]

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Dr. Kalsi gives the spring 2016 convocation address at the University of Houston Cullen College of Engineering.

Dr. Kalsi, President of Kalsi Engineering, was the convocation speaker at the May 13, 2016 spring convocation ceremony of the University of Houston Cullen College of Engineering. To see a video of the event, click here. The introduction begins on the video at 33:05, and Dr. Kalsi’s convocation address begins at 35:59. Dr. Kalsi was […]

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An article about Kalsi Engineering in the May 8, 2016 issue of the Houston Chronicle

Kalsi Engineering was featured in an article in the business section of the Houston Chronicle on Sunday, May 8, 2016. The article describes the conservative business strategy the privately owned company has followed since its founding in 1978—a strategy that has allowed the company to survive the calamitous boom and bust business cycle of the […]

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Advancements in Extreme Pressure Rotary Sealing (OTC-26899-MS)

Kalsi Engineering’s new technical paper, “Advancements in Extreme Pressure Rotary Sealing” (OTC-26899-MS) was presented this morning at the Offshore Technology Conference, in Houston Texas. Over the past several years, the authors, Lannie Dietle and Aaron Richie, and several of their colleagues, have been performing research directed at increasing the pressure capacity and life of polymeric […]

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Rotary seal testing at 10,000 psi

In a previous post, we described testing a rotary seal at 1,890,000 PV for 1,000 hours (7,500 psi at 252 feet/minute). This post describes a test that was conducted at approximately 10,000 psi while rotating at 28 feet/minute. The duration of the test was 6.5 hours, to meet an application-specific rotary cycle goal. The used […]

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