We offer bottle closures made from a thermoplastic high grade synthetic material, utilizing FDA approved resins, oils and food grade silicone. BELTAPPO does not crumble or leave dust particles in the bottleneck or liquids.  In addition, the manufacturing process guarantees excellent factory sterilization. All materials are inert, eliminating the risk of a plastic taste to wines, sparkling wines, spirits, and/or oils. The problems of corkiness or cork taint in your wine has been eliminated by using BELTAPPO corks and closures.