ThePipingMart Blog other How to Select the Right Flange Gasket?

How to Select the Right Flange Gasket?

Flange Gasket

Gaskets are the essential component which is generally placed between flush surfaces to make a channel for fluid conveyance. Any two surfaces might not be seamlessly even or straight, but gaskets can create gaps to move fluid conveniently. Gaskets precisely create those gaps which can effectively remove any leakage in the pathway. There must be specific rules to select perfect flange gaskets. While selecting Flange gaskets, there are some factors to consider such as type of fluid conveyed by the pipeline, operating temperature or pressure, type, size, and pressure ratings of the flange, metal grade, and specifications.

Fluid type

The type of fluid conveyed by the pipeline is the critical factor to consider while choosing the flange gasket. Different liquors need separate gaskets materials which make sure that the flanged joint can operate well for an extended period. There are specific charts or ratings which can be considered for different temperature, fluid types, and pressure. Generally, it is suggested to refer that ratings to get perfect flange gasket for any application.

Material Type

Type of material which used to fabricate flange gasket is also an essential factor during selection. Durability and functioning is depends upon the type of material.


Elastomers is a rubber-type material which has excellent flexibility. Elastomeric flange gaskets are suitable to use with non-metallic gaskets. Due to its characteristics, flange gaskets of this material are difficult to reduce in volume.


Fibrous gaskets are a non-metallic type of gasket. In this type, many materials include such as cork, mica, carbon, aramid, glass fibres, and many more. Every material has distinct properties which make flange joints more perfect and enduring.

Temperature and Pressure

Another factor to consider while selecting the best gasket is temperature and pressure ratings. The gasket material is suitable to endure the maximum temperature and pressures in operation. It required to test or check that gasket does not creep at any range of temperature and pressure to avoid leaks.

Pipeline vibration and oscillation

The flange gasket has to endure the oscillations and the vibrations which occur in the pipeline in any operation. This is must to consider to avoid any loss or leak in the pipeline.

Fluid contamination risk

For some utilisation, it is required to use flange gaskets which avoid contaminating the fluid carried by the pipeline. This is must check in case of operations in pharmaceutical, food, Oil and gas industries. Choose sturdy flange gasket with appropriate material to avoid contamination in fluid conveyance.

Flanges corrosion

Flanges should be free from corrosion to make them durable in any application. Flange materials like austenitic stainless steel have stress corrosion cracking, and it is dangerous to complete operations. Checking flange corrosion properties or material properties while the selection is the most vital factor.


Integrity is another vital factor because toxic fluids need leak-proof seals to stop contamination and to avoid hazard to human life. In the case of toxic fluid applications, tighter and more effective gaskets is a perfect choice. This can avoid the risk of uncertainty and also can make the process smoother.

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