Whether you are new to the fluid sealing market or have been immersed in it for years, there are a number of factors that must be considered when you need to seal fluids. Some may be subconscious, but others sometimes require a great deal of debate and testing. This week, we thought we'd list the important questions to ask (and why) when you're faced with the need to seal a fluid joint.
1. What fluid are you sealing?
Is it coolant? Oil? Gasoline? Water? Other? This will affect your choice of material.
2. What temperature will it operate at?
It is best to determine the extremes of operational use and understand how the gaskets and fluids will age or be exposed to high temperatures for extended periods of time.
3. How corrosive is the fluid? Is it compatible with my gasket?
Some gaskets are designed to "swell" when in contact with fuel and oil. This "controlled expansion" actually creates a better seal on the internal contact edge of the gasket. Of course, compatibility must also be considered to avoid gasket disintegration. A good example of this is the use of low cost venting materials in oil seal applications. The material will be weakened by the absorbed fluid.
4. What seal grade do I need?
Sometimes in engine applications, additional features are added for various purposes. An example is the silicone coating used for "cold seal" engines. This provides additional sealing while the engine is still warming up to its operating conditions.
Sealing fluids can be a tricky project. When the goal is to find a material that will meet or exceed the design life, you need a material that is right for your application. Your gasket material supplier is your best resource for discussing material requirements. Whether you are in the planning stages, troubleshooting your current material, or looking for an alternative material, a good gasket material supplier will be with you. No one knows our materials better than we do!
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