The choice of a seal material for a ball valve is vital to its successful operation. In this post, we are going to look at some of the major characteristics of six commonly used options for polymer seals in ball valves.
Here are some additional post on Polymer Seats and Sealing Solutions:
Most ball valve seats are made of a polymer material primarily because of their elasticity, which it vital for achieving a good seal. They perform well at low pressure differentials, provide low operating torques, and usually have low coefficients of friction. Lets look at some materials that are being used for ball valve seats.
9 Significant Purchasing Options for Ball Valve Seats
Option 1:
One of the most popular choices for a ball valve seat material is PTFE because of its…
Abradable polymer labyrinth seals are a mechanical, dynamic seal based on the original labyrinth seal, but with a curious twist that increases efficiency. They can be made of different materials, but in this post we are going to focus on polymer labyrinth seals, and, more specifically, on modified PTFE abradable polymer labyrinth seals. Here are five fascinating facts about abradable polymer labyrinth seals, starting with some basic facts of abradable labyrinth seals:
When it comes to seals, labyrinth seals are a standard design choice, and engineers have researching and implementing them for over one hundred years. The purpose of this post it to present you with seven questions about polymer labyrinth seals that you should know the answers to.
Design and Selection of Appropriate Oil & Gas Seals:
As competition for natural resources increases, petrochemical companies have begun to look to new locations that pose new challenges from arctic operations with low ambient temperatures to subsea equipment with high pressures and extreme temperatures.
In addition, companies face higher demands for safety, reliability, and environmentally-friendly designs and processes. There is also the challenge of reducing the footprint of structures and equipment for exploration and production of oil and gas. All of these factors combined have driven up the costs involved in exploration and production, and made the design of oil and gas systems far more complex.
The design and selection of appropriate seals is key to many of these issues… Read more
When choosing a metal-cased rotary lip seal, you have many options. One design choice to be made is what material to use for the lip. Most rotary shaft seals have a lip that is made of a thermoplastic (such as PTFE, PP, or PVC), an elastomer (natural or synthetic rubber), a thermoplastic elastomer (for example, PE), or a metal. In this post, we are going to look at what makes PTFE a competitive choice for a metal-cased rotary lip seal by investigating six things your competitors dont want you to know.
Here are some additional blog posts here at Advanced EMC Technologies on polymer seals:
The primary purpose of a typical expansion bellows is to isolate a fluid from neighboring components. Bellows are used in a variety of applications, including pulse dampeners, HVAC systems, pharmaceutical processing, pollution control, and piping systems. PTFE (polytetrafluoroethylene, or Teflon) is an ideal material for bellows applications, and in this post we are going to explore seven things every engineer needs to know about PTFE bellows.
Here are some other blog posts here at Advnced EMC Technologies on PTFE (polytetrafluoroethylene):
Big challenges faced in the Food and Dairy Industry
There are several major issues faced in the food and dairy industry, including:
Temperature conditions that range from extremely high to cryogenic
Contamination
Exposure to harsh chemicals
Excessive moisture
Corrosion
Continuous sanitation regimens
Regulations
Expensive shutdowns
In these industries, simple thinks like lubrication of seals and bearings become major issues because of potential contamination. Potential contaminants in the food and dairy industry are varied, ranging from lubricants, antimicrobial barrier fluids, insects, splinters of plastic or metal, to coolants. Even contamination at the microbial level can lead to very expensive recalls.
In the food and dairy business, failure to meet both national (and international) standards can quickly destroy an otherwise successful company. It is vital that the equipment be not only reliable but compliant with governmental regulations. More and more engineers are turning to polymer options in the design and implementation of food and dairy processing equipment. This post will focus on why polymers are an outstanding option for a specific aspect of machinery used in these industries: bushings.
Why are polymer bushings a good choice?
Here is another blog post feom Advanced EMC Technologies on Polymer Bushings:
Geckos, it would seem, can just about stick to anything.
Well, researchers at the University of Akron decided to see what kind of surfaces geckos can cling to, and Teflon, or Polytetrafluoroethylene PTFE as engineers prefer to call it, was one of their tests. Their answer was surprising: geckos cannot cling to dry PTFE (wet PTFE is another matter altogether). Some people say that PTFE is the only dry surface that a gecko cannot cling to but why?