3 Common Misconceptions About Durometer
Jul 9, 2019 9:32:31 AM
Topics: Foams, Compression Force Deflection, PORON, PORON Foam, Elastomers, Material selection
Compression Force Deflection Demonstration of PORON and BISCO Foams
Jul 7, 2016 8:30:00 AM
Marian has a brand new demonstration piece to share with the world! Strategically named "Test My Memory," the demo illustrates the impact of compression cycling over time with 4 different foams. Neoprene, Polyethelyne, PORON Urethane, and BISCO Silicone are tested by being compressed for 48 hours.
Foam Material Compression
In the demonstration, you will see that certain foams depreciate as they take on impact over time, whereas other foams resist the compression set by returning to their original thickness. The material characteristic of being able to take a compression set, also called compression force defection, is extremely important in long-term sealing applications. The ability of the material to "push back" to fill in any potential gaps that would allow water or dust to pass through is critical. This makes such materials an excellent option for sealing gaskets. We wrote an entire blog post about compression force defection, you can read it here: Compression Force Deflection in Foam Gaskets: A Critical Property
Topics: Foams, BISCO Silicone, Compression Force Deflection, PORON, PORON Foam
Compression Force Deflection in Foam Gaskets: A Critical Property
Feb 2, 2016 9:56:28 AM
Compression Force Deflection
Applications that experience periodic compression cycling over time may require a gasket that is capable of compression rebound. In the event that your application uses a material that does not resist compression force, the material may depreciate over time. When your gasket has dwindled or has deteriorated from all of the periodic compression cycling, your gasket will become ineffective and will need to be replaced. In a perfect world, your gasket should rebound to fill any potential gaps. Using a material with great compression resistance will guarantee a long-term sealing performance that will work just as effectively each time you reseal your application.
Topics: Foams, Foams for Low Clamping Force Seals, BISCO Silicone, Compression Force Deflection, PORON Foam