A brief introduction to the performance characteristics and application of expanded PTFE gasket
Classification:
Industry dynamics
Author:
PFA tube little sister
Source:
Dankai
Release time:
2023-01-11
Visits:
With the rise of modern industry, especially modern petroleum, chemical industry, atomic energy industry, large power plants, pressure vessels to the direction of high temperature, high pressure, high vacuum, the cushion
Sheet seals continue to put forward new requirements, and various new materials and new structures continue to appear, including what we are going to say today-expanded PTFE gasket (or expanded poly
tetrafluoroethylene gaskets). Do you know what is bulky? What are the performance characteristics of Dankai PTFE gasket? What occasions can it be used in?
The so-called "expanded PTFE gasket" in our mouth, all called "expanded PTFE gasket", is cut or punched from 100%PTFE expanded PTFE material
into. What is expanded PTFE material? Don't worry, we will continue. Expanded PTFE material (EPTFE) is a kind of expanded PTFE
A unique material that is tough and porous.
Figure 1: PTFE gasket Source: Network
Performance characteristics of expanded PTFE gasket:
1. Easy to cut, can be cut into any shape of gasket by mechanical stamping or hand. It is convenient for people to install and use, thus making your work easier.
2. Because the expanded PTFE gasket has a unique ability to conform to the molding. Therefore, when we install and use, we do not need to add much pressure to the rough or damaged flange.
produce a good sealing effect on the surface.
3. It has strong resistance to chemical corrosion. It does not react with any chemical substance except melting alkali metal, free fluorine, tertiary nuclear and so on. So, bulking
PTFE gasket can be used in all sealing situations within the allowable range of temperature (315 ℃). This will greatly reduce the variety and number of seals.
4. Due to the unique high-density fiber structure of the expanded PTFE material, it has strong creep resistance; because it does not contain any adhesives and additives, it is mechanically
Performance is very stable.
Application of expanded PTFE gasket:
1. As the expanded PTFE gasket can be used for pressure sealing of a variety of different hardness interfaces, such as:(1) rigid metal interface (generally used for 3 ㎜);(2) glass fiber reinforced plastic interface (generally make
For 3 ㎜);(3) plastic lining interface (used below DN300 caliber);(4) Enamel, steel lined glass interface.
2. Due to the good leakage resistance of the expanded PTFE gasket, the gas leakage rate is less than 1 × 10-4. Therefore, Dankai PTFE gasket can also be used to seal corrosive gases, such as chlorine, chlorine
It helps many large caustic soda plants and chlor-alkali plants to solve the leakage of chlorine and other gases.
This article is originally created by Teflon's little sister. Welcome to pay attention and take you to grow knowledge together!
Key words:
PTFE, expansion, gasket, material, due, with, high temperature resistance, corrosion resistance, aging resistance
Previous Page