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.
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Video showing a floating backup ring in operation
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on
Introduction to high pressure seal implementation challenges Mechanical designers face five significant challenges when implementing high pressure rotary seals: shaft runout; shaft misalignment; shaft deflection; pressure-related hardware deformation; and the dissipation of seal-generated heat. These challenges, and their solutions, are described below. The video included above shows how our patented floating backup ring addresses the…
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An extreme high-pressure oil seal test (320 hours, 9,500 to 9,800 psi)
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This video highlights extreme high pressure rotary oil seal testing. The test was conducted at 141.4 sfpm (0.72 m/s) with an ISO 68 viscosity grade oil at 9,500 to 9,800 psi (65.5 to 67.57 MPa). The test was stopped at 320-hours after exceeding the operating goal. Introduction and overview of the 320-hour high pressure oil…
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A new way to address circumferential seal slippage
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Circumferential slippage of a seal relative to a housing can produce undesirable effects, such as increased seal and housing temperature and seal and housing wear. Kalsi Seals incorporating anti-rotation tangs (U.S. Patent 8,505,924) haven’t been widely adopted due to the expense of machining matching pockets in the lubricant side groove wall of the seal housing.…
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Announcing the release of KVAP® Version 4.2
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Kalsi Engineering is excited to announce the release of Version 4.2 of the Kalsi Valve and Actuator Program (KVAP™) software. KVAP 4.2 is a culmination of a multiyear project to bring key advances to the leading nuclear industry valve and actuator design calculation and tracking and trending software. The new features include: Kalsi Engineering was…
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A 1,500 psi rotary seal test with a 0.020” radial extrusion gap clearance
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Our Super Wide™ rotary seals were designed for partitioning oil from drilling fluid in lubricant-overpressure types of equipment such as power swivels, where the lubricant pressure is intended to be slightly higher than the drilling fluid pressure. The dynamic lip of this new seal design is two times wider than our Extra Wide rotary seal…
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Rotary seal testing at 9,400 psi
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In previous posts, we described testing a 2.75” rotary seal at 1,890,000 PV for 1,000 hours (7,500 psi at 252 feet/minute) and testing a 4.50” rotary seal test at 9,800 psi and 24 rpm. This post describes a 4.5” rotary seal test that was conducted at 9,400 psi while rotating at 120 rpm (141 feet/minute).…
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A luncheon honoring retirees Bahir Eldiwany and Daniel Bubela
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Kalsi Engineering hosted a luncheon at Fernando’s restaurant on December 17, 2018 to honor Engineer Bahir Eldiwany, PhD, P.E. and Laboratory Technician Daniel Bubela on the occasion of their retirement. Although the years have gone by far too fast, it is indeed an honor to celebrate the impact and legacy of such wonderful colleagues and…
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Announcing larger cross-section Wide Footprint Kalsi Seals™
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Wide Footprint Seals™ were designed to be directly interchangeable with the 0.335″ cross-section Standard Kalsi Seals™ that had originally been developed for use as rotary steerable tool and mud motor seals. With the enhanced durability resulting from a 50% wider dynamic lip and 0.010″ (38%) more radial compression than the older seal style, they quickly…
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Announcing a new revision of the Kalsi Seal Handbook™
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The Kalsi Seal Handbook provides guidelines on how to implement Kalsi-brand rotary shaft seals in rotating equipment. It is an e-book with individually revisable chapters linked from a web-based table of contents. This publication format streamlines the revision process and makes it easy to provide the most up to date information to our customers. The…
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Pushing the envelope of mud seal design
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Kalsi Engineering just finished the inaugural testing of a radical new partitioning seal that was designed for mud-oil separation (mud seal service) in oilfield power swivels and other lubricant overpressure-type rotating equipment. In such equipment, the pressure of the seal lubricant is maintained at a value that is slightly higher than the pressure of the…