Our technological cork for wines and spirits

Altop is ideal for spirits due to its outstanding mechanical properties and releasable TCA below 40 ng/l in 40% ethanol solution. Thanks to the unique DIAMANT® process and stringent testing at all stages of production, every Altop cork provides a consistent guarantee of individual performance.

  • Consistency from one bottle to the next and over time.
  • Consistent bottling leading to optimized productivity and reduced costs.
  • Regularity of line behaviour.
  • High elastic return.
  • Controlled and consistent permeability.

Diam Bouchage provides a complete service from design to realization (cork shanks production, top sourcing and assembling) and offers its customers numerous options for customizing their closures (diameter, marking, heads in wood, metal, plastic or glass).


The Diam Guarantee

More about DIAM closures

Further information about DIAM closures can be found on the DIAM website …