Closed Or Open Cell Structure
Our EPDM sponge rubber gaskets are available with either a closed or open cell structure. Both formats offer similar properties in terms of operating temperature ranges and resistance. However, the cellular structure has a great effect on the sealing and mechanical properties of the gaskets. A closed cell material will generally be air and watertight as standard, requiring less compression in order to form a seal. These materials are generally less flexible and as a result, offer lower rates of compression. It is worth noting however, that a closed cell structure can burst if the material is placed under too greater compression. An open cell material will typically be more flexible and allow for greater rates of elongation. Despite being an open cell material, it is still possible to create an air and watertight seal through the use of compression.
Don’t hesitate to get in contact with us if you are unsure which material or grade be suits your specific requirements. Our dedicated team are on hand in order to ensure that you can always get the most suitable gaskets possible.