aluminium cartridge

контекст:
Aluminium cartridges are made from an aluminium disc or slug which is stamped from
an FRP to obtain the form of a tube. The cartridge is filled from the bottom side and
closed with a piston and finally seamed. Aluminium cartridges are used to pack
materials of various kinds. The most common materials packaged are sealant and
adhesives used in the car and construction industry.