Boiler Door Joints are most commonly used at operating pressures of 180 psi (12.4 bar) and 380°F. (193°C.) (steam pressure applications) for an average service life of up to one year. When used at pressures of 200 psi + the lifetime of the boiler joints decreases. That being said as the application changes (.ie – water, condensate and air vessels) where the operating conditions become far less severe, (below 250°F./121°C) you will find that the service life extends considerably. Abbey Seals stock a vast range of Boiler Door Joints, most sizes as standard, although bespoke sizes can be supplied.