News Update: Mexichem Specialty Compounds is now Alphagary. Stay tuned for more updates.


Our ALPHASEAL® compounds are used as sealants on plastic caps and metal crowns for carbonation retention and improved shelf life. The ALPHASEAL® range consists of PVC and TPE liner compounds for carbonated soft drinks, hot fill, milk and retort applications.

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ALPHASEAL 04-073PMDetails
ALPHASEAL 173Details
ALPHASEAL 221Details
ALPHASEAL 225-HDetails
ALPHASEAL 240-6CYDetails
ALPHASEAL 259Details
ALPHASEAL 4609-65Details
ALPHASEAL 700Details
ALPHASEAL 701Details
ALPHASEAL 702Details
ALPHASEAL 703Details
ALPHASEAL 704Details
ALPHASEAL 706Details
ALPHASEAL 707Details

The PVC and TPE compounds are designed for pry off and twist off liners in metal crowns for Beer. To create the extensive range of ALPHASEAL® compounds, a wide selection of additives is utilized. These are added in highly intensive microprocessor controlled mixing operations which ensures excellent dispersion.

There are a number of features which ALPHASEAL® grades exhibit and which provide a benefit to the processor or end customer:

  • Easy to process on Oberburg, Sacmi and HC processing machines.
  • Taste and odour neutral
  • No degradation during normal processing
  • Pelletized compound is ready to use without predrying
  • Easy to colour with universal or PE based masterbatch 
  • Made from FDA sanctioned materials.
  • Carbonation retention
  • Improved shelf life
  • Opening torques (All ages and sticky products)
  • No scalping of flavours