Frequently Asked Questions
Most frequent questions and answers
Can you use open cell foams to get a water seal?
MGI: “Yes, a number of our foams are microcellular and are manufactured for these applications, depending on the IP requirements compression of the foam can be from 15% to 40%”
Aren’t closed cell foams better than open cell foams for water sealing?
closed cell foams require significant compression to create a seal. Whilst this
may work initially, after extensive use the cells will begin to break down and
the seal will begin to take a compression set, meaning the seal will not be able
to perform as the material will not return to its original thickness. Our range
of specialist polyurethane and silicone foams have a significant compression
set resistance and are designed for critical and hard-wearing sealing