FireSeal is a business unit within Essve that provides firestopping and sealing systems for the marine and offshore industries. It has 135 employees and annual turnover of €60 million. FireSeal's Flex-D system is one of the fastest to install for cable, pipe, and ductwork penetrations, taking an average of 20 minutes to complete. FireSeal systems are tested and approved to stringent classification standards to resist fire, water, pressure, smoke, gas, and vibrations.