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板块异动：我国大型风电光伏基地项目有序开工风电光伏板块持续走强

Common valve sealing ring materials and their application performance

Category： Industry news
Release time： 2023-12-04

【Summary description】

Common valve sealing ring materials and their application performance

【Summary description】

Category：X25175WebNewsCat(createTime=Fri Jan 05 21:26:43 CST 2024, updateTime=Sun Jan 07 19:43:33 CST 2024, webId=9, parentId=0, lang=en, title=Industry news_Cixi Xinsheng Seals: Leading Tech, Exports, Quality, Variety, Scale, keywords=Ningbo Seal Manufacturer,Graphite Gasket Ningbo,PTFE Gasket Ningbo,Composite Graphite Gasket,Cixi Sealing Materials,Ningbo Seals for Industries, briefDesc=Ningbo Dongheng Seals Co., Ltd. develops and manufactures a variety of sealing materials and products, including high-strength graphite gaskets, PTFE gaskets, and graphite composite gaskets. Our leading technologies in sealing are widely applied in industries like machinery, chemical, metallurgy, power, shipping, food, aerospace, pharmaceuticals, and electronics. We have numerous domestic clients and export products globally., name=Industry news, status=1, sortNo=2, colId=325, pageUrl=, showToCol=0, showToBtm=0, rcmdIdxStatus=0, img1=, img2=, parentName=null, colName=News, createUserName=慈溪市信盛密封件厂, parent=null, children=null, newsList=null, topNewsList=null, rcmdIdxNewsList=null, beforeCopyId=null, url=newsCat-148.html, colIdArray=null, parentIdArray=null, queryTitleLike=null, queryKeywordsLike=null, queryBriefDescLike=null, queryNameLike=null, queryCreateTimeGreaterEqual=null, queryCreateTimeLessEqual=null)
Release time：2023-12-04

Details

The most widely used valve sealing ring materials include polytetrafluoroethylene (PTFE), nylon (NYLON), and synthetic rubber. The basic properties and application scope of these materials are as follows

1、 Polytetrafluoroethylene PTFE
Polytetrafluoroethylene is commonly used in globe valves, gate valves, ball valves, etc. with a temperature of t ≤ 230 ℃ and a nominal pressure of PN ≤ 6.4MPa. It can be filled with various materials according to the requirements of the valve's operating pressure, temperature, chemical corrosion resistance, and wear resistance.
2、 Nylon
Nylon has the characteristics of low friction coefficient and good corrosion resistance. Nylon is commonly used for ball valves, globe valves, etc. with a temperature of t ≤ 90 ℃ and a nominal pressure of PN ≤ 32MPa.
3、 Synthetic rubber
Synthetic rubber has better comprehensive properties such as oil resistance, temperature resistance, and corrosion resistance than natural rubber. The general usage temperature of synthetic rubber is t ≤ 200 ℃. Rubber is used for sealing valves with a nominal pressure of PN ≤ 1MPa, such as globe valves, gate valves, diaphragm valves, butterfly valves, check valves, and clamp valves.