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What are the uses and specifications of PTFE gaskets?
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2024-06-27
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As a high-performance sealing material, PTFE gasket plays an important role in many industries and fields. Its excellent chemical stability and excellent physical properties make it an ideal choice for solving all kinds of complex sealing problems. This article will focus on the basic concepts, main uses and specifications of PTFE gaskets.
What is 1. PTFE gasket?
PTFE gasket, referred to as PTFE gasket, is a sealing element made of polytetrafluoroethylene (PTFE) resin by molding, turning or cutting. PTFE has a very low coefficient of friction, excellent chemical resistance, non-stick and a wide operating temperature range (-80 ℃ to 260 ℃), so the gasket can be used in a variety of extreme environments. Maintain good sealing performance and long service life.
Use of 2. PTFE gasket
PTFE gasket has a wide range of uses, covering various industrial fields:
1. Chemical and petrochemical industry: in chemical equipment, reaction kettle, storage tank and pipeline flange connection, PTFE gasket can effectively prevent the leakage of chemical medium, suitable for all kinds of strong acid, strong alkali, organic solvent and other corrosive conditions.
2. Pharmaceutical and food industry: Because of its non-toxic, high hygiene level, non-adsorption media and other characteristics, PTFE gasket is very important in the sealing of pharmaceutical production, food processing equipment and pipelines.
3. Energy and power industry: In high-temperature and high-pressure equipment such as power plants and nuclear power plants, PTFE gaskets can withstand high-temperature and high-pressure environments and provide good electrical insulation performance.
4. Machinery manufacturing and aerospace: In precision mechanical parts, valves, pumps, aircraft engines and other high-precision, high-demand sealing occasions, PTFE gaskets are favored because of their high wear resistance, low friction coefficient and low temperature resistance.
Specification model of 3. PTFE gasket
The specifications and models of PTFE gaskets are diverse to meet the needs of different working conditions. Mainly includes the following types:
1. Pure PTFE gasket: according to the thickness and width of different, can be divided into thin, medium, thick and other specifications, commonly used in flat flange static seal.
2. Filled modified PTFE gasket: on the basis of pure PTFE, glass fiber, copper powder, graphite and other fillers are added to improve its mechanical strength, temperature resistance or increase thermal conductivity, such as glass fiber reinforced PTFE gasket, graphite filled PTFE gasket, etc.
3. Special shape gasket: including special-shaped gasket, corrugated gasket, inner and outer ring combination gasket, etc., designed for different connection surfaces and pressure levels.
4. Expanded PTFE gasket: made of expanded polytetrafluoroethylene (also known as expanded PTFE), with greater flexibility and resilience, especially suitable for uneven sealing surfaces and large flange connections.
To sum up, PTFE gasket is an indispensable sealing element in modern engineering technology because of its diversified specifications and wide applicability, which can provide ideal sealing solutions in many industrial applications. Through in-depth understanding of its characteristics and specifications, users can choose the most suitable PTFE gasket products according to specific working conditions to ensure the reliability and safety of equipment operation.
This article is originally created by Teflon's little sister. Welcome to pay attention and take you to grow knowledge together!
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