Rotary Seal Blog

Testing high pressure RCD seals at 2,300 psi with large extrusion gaps

Introduction To help our customers meet their high pressure rotary control device (RCD) goals, we have performed characterization testing of our 10.50” (266.7mm) PN 682-20-318 plastic lined RCD seals. The testing was performed at several different pressures, including duration testing at 2,300 psi (15.86 MPa). The 2,300 psi test pressure simulates a lubricant overpressure type […]

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Celebrating Daniel Alvarez’s 37 years of achievement at Kalsi Engineering

On Friday, March 17, 2017, Kalsi Engineering held a luncheon to celebrate Daniel Alvarez’s 37 years of service with the company, and the beginning of his transition to part-time work. He had thoughts of retiring, but we convinced him to remain employed part-time instead. Although Daniel began working for Kalsi Engineering in 1980, his long […]

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Another improvement in high pressure rotary sealing

Kalsi Engineering, Inc. has increased the reliability of extreme high pressure rotary sealing by improving the extrusion resistance of the force balancing seals used with Kalsi proprietary floating backup rings. The floating backup ring allows the smallest practicable extrusion gap between the rotary seal and the shaft, which allows the rotary Kalsi seal to withstand […]

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Join us at the 2017 Offshore Technology Conference, May 1-4 (Houston)

Kalsi Engineering invites you to visit with us at booth 2100 during the 2017 Offshore Technology Conference (OTC).  This year’s show is May 1 to 4 at the NRG Center in Houston, Texas. Click here to register for a complimentary multiday pass. Rotary Seals – Since the last OTC, we have continued to expand the performance envelope of […]

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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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