Closing heads type GRZ-18 and GRW-18 are the devices co-operating with different types of closing machines and can be installed in closing machines of following companies ROBAK, ALCOA, STORK, KRONES, NAGEMA, Dr. DATZ, ZALKIN. The closing heads serve to make of closures type PILFER–PROOF and FLAVER–LOK consisting of aluminium closing cap dia. 18 ÷ 25 mm with securing ring, to be used to close the glass and plastic bottles with threaded head. Closing heads are made of stainless steel and non-ferrous metals
| Head’s diameter | 89 mm |
| Head’s height | 340 mm |
| Weight | 4,1 kg |
