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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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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KLS-TM high pressure lip seals for rotary service

After a multi-year test program, Kalsi Engineering is pleased to announce the new KLS high pressure lip seal. These spring-loaded lip seals are for sealing fluid pressure up to 1,000 psi (6.89 MPa) in rotationally unidirectional applications. Testing was performed at a surface speed of 543 feet per minute (2.76 m/s). The ability to perform […]

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High pressure washpipe assembly with integral lubricant reservoir

The washpipe assembly shown below has been developed for 7,500 psi service at 200 rpm, and has a three inch bore. In order to achieve this level of performance, the assembly separates the abrasive exclusion function from the pressure sealing function, provides a better way of accommodating washpipe misalignment and runout, and employs a new, […]

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Lubricant over-pressure testing with significant runout

Background information: Lubricant over-pressure testing in low runout conditions Our literature teaches that there are three ways to address skew-induced wear: The use of our specially designed axially constrained seal (ACS). Axial spring force. Lubricant over-pressure. The term “skew-induced wear” refers to rotary seal wear that occurs when abrasives in the process fluid impinge on […]

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