Screw Cap, Polyseal. 28mm.
The polyseal screw caps are black. They have a flexible inner liner that can withstand repeated usage. These screw caps measure 1 cm in height.
Screw caps are not usually considered to be as good as regular corks for long term storage, but are generally satisfactory for short-term storage of about a year. They offer the advantages of ease of use and lower price. The argument against greater use on wine bottles rests more on tradition and aesthetics than safety. Reusing ordinary screw caps raises some risks. So these caps have a polyvinyl liner flexible enough to withstand repeated usage.
Sold in quantities of 12, 100, 500, and 1000/pkg.