Virgin PTFE And Teflon Mechanical Grades, The Differences

There is often some confusion about the difference between the most common qualities of PTFE, commonly known as Teflon: Grade Virgin, mechanical, or retired. This information will help you understand these two types and their various applications, so you and saves time looking for information.

Materials and Applications

PTFE (polytetrafluoroethylene) is a type of plastic known as the brand name Teflon ®. PTFE resins have a constant temperature of 260 ° C (500 ° F). The mechanical properties begin to degrade above this point.

Both Virgin and mechanical qualities are 100% PTFE material and have similar chemical properties. These are the two types of unfilled PTFE. Other types are available with fillers such as carbon, glass or bronze to improve performance for some applications.

PTFE is an economic mechanism, retired with a little lower than the physical properties of the quality of virgin PTFE, also called "recycled" or "recovered". Recycled material is added during the manufacturing process, typically a few percent, but varies. It is cheaper than virgin. This is the grade used for most applications, for less demanding applications the high-purity materials are not necessary, such as chemicals that are not critical, to electrical and mechanical applications. It has better wear resistance and compressive strength that virgin grade. Not suitable for food contact.

PTFE is a higher grade, pure materials, and is more expensive. It 'made without recycled material, has increased. It is a chemically inert up to 500 ° F, the best chemically resistant material available. Virgin has better physical properties, and maintains flexibility at low temperatures. It's a good electrical insulator, high dielectric properties. It is FDA approved and is used in pharmaceutical, food and beverages and cosmetics. It 'is often used for medical or electrical. PTFE Virgin has better friction characteristics, which may be important in some applications.

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