The Freudenberg Simmerring has been a successful product for about nearly 90 years. It seals rotating shafts reliably, and is used in millions of applications and machines in many industries. The Simmerring is flexible, highly loadable, and very dependable. Freudenberg Sealing Technologies has now further developed Simmerrings for use in the process industry – and they are made of food-grade materials.
At high rotational speeds and pressures,
A hydro turbine company based in Portland, Maine, USA, has chosen Vesconite Bearings’ lowest-friction material for the thrust bearings on its free-stream turbines.
The material, Vesconite Superlube, has one of the lowest coefficients of friction of any plain bearing material available, with a coefficient of friction lower than virgin PTFE (polytetrafluoroethylene).
“Thrust bearings made from this material were first ordered in June 2022 and installed in November 2022,” states renewable energy application developer Petrus Fourie.
In industries such as chemical processing, hydrocarbon refining, and power generation, leakage from extreme temperature process streams can result in loss of efficiency and production as well as adverse environmental impacts and compromised employee safety. One of the most commonly used sealing products in systems subject to high pressures and temperatures is a spiral-wound gasket. These gaskets typically consist of filler and winding materials selected on the basis of application requirements and end-user preference. Proper selection of these materials is critical to achieving the desired performance in all applications.
The two most common filler materials in spiral-wound gaskets are graphite (can withstand temperatures up to 850 ºF) and polytetrafluoroethylene (PTFE; tolerance up to 500 ºF). Other filler materials are used mainly for their thermal insulating properties, not for sealability; these include mica, exfoliated mica, and ceramics. While graphite and PTFE perform satisfactorily in terms of temperature and chemical resistance, they have limitations. Graphite is not compatible with heavily oxidizing media at any temperature, nor can it withstand continuous operating temperatures above 850 ºF. Beyond 850 ºF, volume loss through oxidation becomes excessive and sealing effectiveness is compromised.
Many high-temperature systems, such as exhaust manifolds and flanged piping connections in exhaust systems, are oxidizing. Other services are oxidizing because of the operating temperature and media involved.
The purpose of this 2-minute video is to provide the definition of a flash cutter, what makes them ideal for custom, or standard gasket shapes, and the capabilities of Gallagher Fluid Seals.
0:13 What is a flash cutter?
Neglecting routine maintenance can cost you in seal performance or, in some cases, end with catastrophic failure. Prolonged downtime will incur losses that exceed the temporary cost of preventative maintenance.
It’s important to identify seal contaminants and their sources before they turn into larger issues. Here are some tips on what to look for and how to deal with them.
Here are some typical contaminants you’ll come across:
KLINGERSIL gasketing materials are hard to beat. A proven track record makes them one of the premier gasketing companies in the United States. Because of this, some competitors have cleverly posed their compressed gasket materials as KLINGERSIL green (C-4401).
However, their offerings aren't equal in terms of quality, performance, or specification. And just because it's green doesn't mean it's KLINGERSIL. To ensure you're getting what you want and need in your compressed gasket materials, whether green, gray, tan, black, or white, look for the KLINGERSIL logo repetitively printed on the sheet.
World leader and independent biomedical research organization that strives to uncover cures and genetic solutions for diseases
Excessive costs and extended lead times for critical OEM sterilizer gaskets hampered research efforts
Customer wanted to identify raw material and sterilizer gasket specifications for a direct replacement for 8 different gasket styles
After identifying the silicone material specifications, Gallagher Fluid Seals located an approved