REDwire The key to manufacturing processes: Selecting the right gasket material

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All Custom Gasket's team of professionals will gladly assist you with a broad range of materials from its inventory.

A gasket is a device that creates a pressure-tight seal between two static seal components. Used in most major manufacturing sectors, they play a critical role in the effective operation of a reliable joint. Therefore, proper gasket selection is essential to the successful operation of many manufacturing processes.

There are a number of factors that can be helpful to remember when selecting the right gasket material. A useful acronym to keep handy is STAMP:

S – Specification: Material requirements such as FDA, NSF61, Aerospace specifications and more
T – Temperature: Various ranges of temperatures for different materials. See table below. 
A – Application: Needs for your application, including size, thickness, number of bolts, bolt load and torque applied
M – Media: The type of fluid or chemical contained in the pipe or vessel, which could come in contact with the gasket
P – Pressure: The degree of friction between the gasket and flange; Stress under operating conditions

The below table outlines common materials, corresponding temperature ranges and the most common applications for that material. Please note these temperature ranges can vary depending on intermittent or constant exposure to high and low temperatures.

Material Temperature Ranges Most Common Applications
Natural Rubber (NR) -60 to 195 degrees F Resistance to inorganic acids, ammonia and weak acids
Styrene Butadiene (SBR) -60 to 250 degrees F Cold and hot water service 
Neoprene (CR) -60 to 250 degrees F Excellent resistance to weather and natural aging
Nitrile-Buna N (NBR) -60 to 250 degrees F Great for petroleum-based hydraulic fluids, acids, oils and fuels
EPDM (EPT) -60 to 250 degrees F Good resistance to ozone and sunlight
Cellulose Fibre Sheet Max 250 degrees F Used in sealing solvents
Fluoro Elastomer (FPM) -40 to 445 degrees F Excellent to strong acids, oils, gasoline and chlorates 
Silicone (SI) -65 to 450 degrees F Good compressibility, fungus resistant
Sponge-Foam -40 to 180 degrees F Compressible material, good shock absorption
Cork -20 to 250 degrees F Used for service with water and lubricating oils
Non-Asbestos Fibre -40 to 400 degrees F/ Intermittent 650 degrees F High resistance to heating stress and extensive range of chemicals
PTFE Up to 500 degrees F Great for electrical insulation and is an anti-stick material
Fibreglass Up to 1000 degrees F Used for boiler manhole, hand hole and oven doors
Metallic Gaskets Up to 1000 degrees F (Depending on metal) Common in petro-chemical industry
Flexible Graphite Up to 3000 degrees F (Inert conditions) Ideal for high temperature
Ceramic Paper-Blanket Up to 2300 degrees F Will take the heat and resists corrosive agents

The above information provides a basic guideline to selecting the right gasket material. Your test is the best test to confirm suitability for your specific application. All Custom Gasket's team of professionals will gladly assist you with a broad range of materials from its inventory. Contact All Custom Gasket with your questions and requirements, and make it your gasket and sealing provider.



All Custom Gasket & Materials Ltd.

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