Wine Corks

“As the earth is to the vine so the cork is to the wine”
One of the most important factors in the successful sealing and subsequent maturing of wines is the cork closure. Stringent and ongoing quality control testing at every level of production … from raw material sources to the final inspection of the completed stoppers …. results in total quality assurance. Quality testing is performed by qualified scientists with graduate degrees in oenology, biology, and chemistry. The testing is performed in state-of-the-art laboratory facilities and, to insure objectivity and independence, testing is performed not only by Jelinek Cork Group in their own laboratories but confirmed by tests in independent laboratories as well. The elimination of microbiological development, including Trichloroanisole (TCA), is at the forefront of all Jelinek quality tests. Sophisticated sterilization and sanitation procedures during manufacturing as well as appropriate surface coatings ensure all stoppers are contaminant free. These procedures range from SO2 gassing to ozone treatment and gamma irradiation. Final packing in hermetically sealed heavy duty poly bags further ensures sterilized corks remain sterilized during transport. Smaller quantities of wine corks can be purchased online. For larger quantities, contact us for special pricing.

Wine Cork Types

There are several different types of wine corks available. Type selection is dependent on the type of wine being sealed and the expectant length of time before the wine is consumed. Other factors determining wine cork type selection and treatments include bottling speed, still or sparking wines, sweet or dry wines, red or white wines, bottle size and type. Jelinek Cork Group can recommend the best wine cork types, size, qualities, sterilizing, printing or branding, and surface treatments to ensure successful results.

Natural Wine Corks:



Natural cork is the only sealing material which allows wine to "live" and mature in the bottle over extended time. Natural wine corks are “punched” from specially selected corkwood, carefully inspected for flaws, washed, sterilized, and printed or fire branded. There are seven standard grades of natural wine corks carefully sorted into respective quality grades first by automatic laser sorting machines followed by final manual hand sorting. Wine corks are available in a wide variety of both standard and custom sizes, the most common being 45mm long (1-3/4”) x 24mm diameter and 38mm long (1-1/2”) x 24 mm diameter. The technical specifications are the same for all sizes.

Ice Wine Natural Corks:



These are the highest quality corks specifically sized and treated to fit narrow neck ice wine bottles and to withstand high sugar content. Technical specifications are the same as those of natural wine corks.

1+1 Corks (also known as Double Disc Corks or Twin Top Corks):



These wine stoppers are manufactured in a consistent density meeting industry stopper technical specifications . They are a combination of agglomerated cork (forming the main body of the stopper) and natural cork (the ends of the agglomerated body are laminated with natural cork discs). The discs are available in several different qualities. The benefit of these highly technical stoppers is consistency of density, quality, function and price.

Pore Filled Natural Wine Corks (also known as Colmated Corks):

The pores in natural wine corks are filled and sealed with a mixture of fine cork grains and FDA approved resins. Due to the economical cost of these stoppers, pore filled wine corks are ideal for volume wines. The technical specifications are similar to those of natural wine corks.

Agglomerate Wine Corks:



These stoppers are manufactured from clean natural cork grain. The grain is milled using the “waste” by-product from natural wine cork production. Agglomerate wine corks are economically priced and easy to use. Maintaining the agglomerate stopper technical specifications ensures successful sealing and good performance.

Synthetic Wine Corks:



The modern addition to the traditional natural wine cork, synthetic wine corks are the choice of some wineries. Synthetic wine corks have the benefit of being available in many different colors which permits more flexible packaging designs and brand recognition. The unique formulation specific to synthetic wine corks allows for good and successful performance of these stoppers.


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