This article takes you to understand the "originator" of the gasket world: PTFE gasket "fastener gasket"

This article takes you to understand the "originator" of the gasket world: PTFE gasket "fastener gasket"

Compared with the name of ptfe gasket, the name that many people are more familiar with is Polytetrafluoroethylene gasket, which is a gasket made of polytetrafluoroethylene (PTFE), which is known as the "king of plastics". Field PTFE gaskets are known as the "originator" of the gasket industry.

Why is the PTFE gasket the "originator" of the gasket industry?

The reason why PTFE gaskets are special is due to the super performance of PTFE. It is a high molecular polymer made of tetrafluoroethylene as a monomer. It has excellent heat resistance and cold resistance. It can be used for a long time in a temperature environment of -180°C-260°C, and it is also resistant to acid, alkali, corrosion, and various organic solvents, and is almost insoluble in all solvents. In addition to excellent high temperature resistance, PTFE material has a very low coefficient of friction and good lubricity.

PTFE gaskets made of PTFE materials with many advantages also have many advantages.

If it is suitable for working conditions in various temperature environments, it can be used normally in the temperature range of -180°C-250°C without affecting performance;

Even in an ultra-low temperature environment of -196°C, it can still have good mechanical toughness and maintain an elongation of 5%;

The PTFE gasket also has the best aging life among Plastic Gaskets, and the service life is very long;

It has low friction coefficient and good self-lubricating property;

The surface tension is also the smallest among various materials, and it will not adhere to any substance;

It has good resilience and can maintain excellent sealing performance under high temperature, low temperature, high vacuum, shock vibration and other cyclical alternation and various harsh conditions.

Where are the PTFE gaskets used?

The use of PTFE gaskets is closely related to its characteristics. It is mostly used for the connection of sealing parts with severe temperature and pressure changes, such as sealing elements at the flange connections of pipes, valves, heat exchangers, pumps, etc.; Chemical, pharmaceutical, electric power, steel, machinery, metallurgy, shipbuilding, atomic energy, aerospace, instruments, calculators and other industries are widely used. Especially in the chemical and pharmaceutical industries, its characteristics of acid and alkali resistance, high temperature resistance and resistance to various organic solvents have played a great role.