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PTFE Gasket Has Good Mechanical Toughness
- Nov 03, 2017 -




PTFE gasket performance advantages are sought after, polytetrafluoroethylene gasket high lubricity, polytetrafluoroethylene in solid materials, the lowest friction coefficient.

Polytetrafluoroethylene gasket itself has a high resistance to erosion, physical function is not chaos, high and low temperature resistance, the achievements of its good sealing function. PTFE Gasket By changing the tightening force around the entangled steel strip, the density (hardness) of the entangled gasket can be changed to meet the needs of various application parts and is widely used in petrochemical, mechanical, electric power, metallurgy, shipbuilding, medicine, atomic energy and aerospace industries .

Polytetrafluoroethylene gasket weather resistance, polytetrafluoroethylene in the plastic in the best aging life. PTFE gasket itself has a high resistance to erosion, physical function is not chaos, PTFE Gasket high and low temperature resistance, the achievements of its good sealing function, in the petroleum, chemical, pharmaceutical, power, steel industry has a wide range of applications.

Polytetrafluoroethylene gaskets are not adherent, polytetrafluoroethylene has the smallest surface tension in solid materials and does not adhere to any substance.

PTFE gasket low temperature, with good mechanical toughness; even if the temperature dropped to -196 ℃, but also maintain 5% elongation. Commonly used in the temperature, PTFE Gasket pressure alternating intense sealing parts, is the pipeline, valves, pumps, heat exchangers, towers, manholes, hand holes and other flange connection of the static sealing components.

PTFE gasket performance and strengths are as follows. PTFE Gasket Common media includes water, oil, acid solution, alkali solution, etc. Almost all chemical components Teflon gaskets are non-toxic and polytetrafluoroethylene is physiologically inert. As a long-term implant of artificial blood vessels and organs, PTFE Gasket there is no adverse reaction.

Polytetrafluoroethylene gaskets are resistant to erosion and are inert to most chemicals and solvents, are resistant to strong acid and alkali, water and various organic solvents. This gasket compression rebound function is good, with multi-channel seal and a certain self-tightening function, PTFE Gasket the department can eliminate the pressure, temperature changes and mechanical vibration. PTFE wrap around the entanglement gasket is a V-shaped or W-shaped steel strip and filler PTFE spiral composite made of a semi-metallic flat gasket. In the high temperature, low temperature, high vacuum, shock and vibration, such as alternating cycles and a variety of harsh conditions, PTFE Gasket to maintain its excellent sealing performance. By changing the gasket material combinations, can solve a variety of media on the gasket chemical erosion problem. Do not bond flange surface, convenient maintenance and replacement.

PTFE gasket high temperature, PTFE can work at temperatures up to 250 ℃ use.

Polytetrafluoroethylene gaskets are outstanding in the areas of strong alkali, strong acids and corrosion protection (great success on the scale of convergence of large-caliber utensils and non-metallic equipment), efficient and useful maintenance of brittle materials Of the device convergence and can balance or offset due to "defects", "device dislocation", "machining", "rigid deformation" and other errors, balance uneven pre-tightening force, effectively solve the problem of leakage under unfavorable conditions.

PTFE gasket two major features:

1. Polytetrafluoroethylene gasket insulation: Volume resistance up to 1018 ohm / cm, completely independent of the environment and frequency, PTFE Gasket high breakdown voltage, dielectric loss.

2. PTFE gasket corrosion resistance: In addition to the fluoridation medium, molten alkali metal and sodium hydroxide above 300 ℃, all the other strong acid (including aqua regia) reductant, PTFE Gasket strong oxidant and each Organic solvents are acceptable.

Because of these two major characteristics of PTFE gasket, it is widely used in food, pharmaceutical, water treatment, textile, metallurgy, paper making, coal machinery, petrochemical and other industries.


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