Following are the reasons as to why welded construction in metal jacketed gasket should be preffered instead of one piece metal
jacketed gasket:
1.Cost effective due to reduced metal consumption. 2.With welded pass bar construction, primary sealing is added to the gasket, thus in case of any leak occures through the pass bars,primary seal maintains its function. 3.Less time to manufacture 4.Longer sealing life. Metal stated below are standard. Other metal can also be served as per requirement. 1.Soft Iron 2.Brass 3.Inconel 4.Silver 5.Nickel 6.Monel 7.Hasteloy 8.Stainless Steel 9.Copper 10.Titanium Filler Material 1.Graphite 2.PTFE 3.Non Asbestos Material Non Metallic Gasket : These gaskets are used for low pressure classes. The material selection can be done according to the specified application. Thickness can be obtained as per the requirement. These are also called as 'SOFT GASKET'. As the name says, can be compressed under low bolt. Non Metallic Gaskets are also used in applications ranging from flange and heatexchanger etc. Non Metallic Gaskets can be obtained in any shape as per the diagram. We offer a wide range of material for the Non Metallic Gasket: 1.Compressed Non Asbestos Gasket 2.Expanded PTFE Gaskets 3.PTFE Envelope Gaskets 4.Graphite Cut Gaskets 5.Virgin/Glass - Filled/Broze filled PTFE Gasket 6.EPDM Gaskets Ring Type Gasket : Ring Type Joints (RTJ) are precision machined, metallic sealing ring suitable for high temparature and pressure application. Ring Type Joints can be produced in any sutable material depending upon the application. Material selection should be selected keeping in mind that it is softer than the Mating Flanges. Material for Ring Gasket areSoft Iron, Low Carbon Steel, 4-6 Chrome 1/2 Mo, Stainless Steel 410, Stainless Steel 304, Stainless Steel 316.
Source: Zhejiang Yaang Pipe Industry Co., Limited (www.yaang.com)