Why don’t my PTFE gaskets seal FRP, plastic and other light load flanges?
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Top Seals Articles
Find a reliable dry gas seal system for any application.
First of Six Parts
Follow the major developments in seal technology
This month's "Sealing Sense" was prepared by FSA member Larry Sheffield.
Proper safety precautions for selecting, installing and maintaining seal systems
The FSA is actively participating in the task groups on the fourth edition of the API-682/ISO 21049 and 3A Sanitary Standards for mechanical seals .We also provided input on sealing systems to the ASME EA-2-2009 Energy Assessment for Pumping Systems standard. The API & 3A standards provide the latest technology updates for formidable industry applications, while the ASME Standard addresses the critical issues of energy efficiency and sustainability.
The mechanical seal industry, like the pump industry, will continue to face significant opportunities as well as challenges as we progress further into the globalized 21st century.
Overall, the new sealing solution—in use since 2007—is outperforming the old method by a significant margin considering reliability, safety, energy and environmental perspectives. It increased pipeline flexibility and simultaneously improved overall product delivery.
Application and maintenance of the manufacturers' recommended torque to valve packing is critical to meeting emissions requirements and long service life. While approaches to the application of torque for braided and die-formed packing may be different, the generally accepted practices are important to all valve packing. Consultation with the packing manufacturer on specifics of the application can help to ensure reliable performance.
Latest Seals Articles
Why don’t my PTFE gaskets seal FRP, plastic and other light load flanges?
Find a reliable dry gas seal system for any application.
First of Six Parts
Follow the major developments in seal technology
This month's "Sealing Sense" was prepared by FSA member Larry Sheffield.
Proper safety precautions for selecting, installing and maintaining seal systems
Bolted flange gasket technology continually evolves with new designs and materials that provide more reliable and durable seals. Plant operators can choose from a wide variety of gasket products that meet the needs of each application; however, selecting the optimal gasket product is only half the battle.
Running component wear life and failure are primary cost drivers in the rotating equipment industry.
Gasket life is important to ensuring long, leak-free operation of a bolted joint. While selection of the proper gasket is an important first step, improper installation procedures can damage gaskets and prevent them from achieving their service life potential.
The March 2009 Sealing Sense concluded that pipe strain can cause failure of the packing or mechanical seal since they are both sensitive to misalignments introduced by pipe strain.
Due to superior adhesion and other advancements, diamond coating technology is today being used in a wide range of sealing applications. The adhesion of new UNCD® Fface materials to their underlying silicon carbide rings is so high they can withstand loads that fracture the SiC without separation of the diamond from the SiC ring.
Columns and Blogs
In this multi-part series, we will investigate several aspects of centrifugal pump efficiency.
First of Five Parts
Since the original publication of this draft standard in the January 2008 issue of Pumps & Systems, I have received feedback, encouragement, numerous questions and criticism. The draft listed three basic levels of repair.
The McGraw-Hill scientific dictionary [5] states that a volute is "a spiral casing for a centrifugal pump... designed so that speed will be converted to pressure."
