Higher Grade Natural Cork (3rd of 9) for Aging Wines 3 to 5 Years
Securely seal your wine bottle with our grade 3, Super quality 38mm x 24mm natural straight cork stoppers! Natural cork's elasticity, combined with its near-impermeability, makes it the perfect material for topping wine bottles and more. Super quality natural cork stoppers are high quality natural corks that offer good sealing, a natural aesthetic and good mechanical characteristics.

Our 38 x 24mm Super quality corks are #9 and compatible with most traditional 750 ml bottles and 375 ml bottles. The secure seal created by the cork allows for aging from 3 to 5 years when inserted correctly with a compatible bottle.

These natural wine cork stoppers have been peroxide washed to disinfect and lighten the color for visual appeal while still maintaining a natural appearance. This pack of corks stoppers has no print to highlight the natural aesthetic.

The cork surface has been coated to allow for easier corking and extraction while improving impermeability. This coating lasts no longer than six months. Our natural corks should be used immediately and not stored for longer than six months. We ship direct from the source in Portugal to ensure a fresh coating. This cork comes 1,000 per pack - at Wholesale Pricing!

Key benefits
  • Higher grade natural cork (3rd of 9) material
  • Suggested for aging wines from 3 to 5 years
  • Good sealing
  • Good mechanical characteristics
  • Peroxide washed for lighter color
  • Not printed to highlight natural aesthetic
  • Sourced sustainably
Why natural cork?
Natural cork is made from the bark of the cork oak tree. This organic material has an intricate cellular structure similar to a honeycomb which creates a compressible, impervious material that is resilient to environmental changes such as temperature and moisture. Natural cork is the only material that can adapt to the internal irregularities of the neck of a wine bottle ensuring proper sealing even if the glass expands or contracts during storage or shipping.

The maturation of wine finished with a natural cork is predictable as oxygen ingress with natural corks is largely a result from diffusion. Additionally, the physical properties of natural cork interact with wine during the maturation process by developing its character and impacting the creation of the bottle bouquet - the aroma developed during aging.

What size cork do I need?
Choosing the right size cork for your bottle and maturation process is essential for ensuring the ideal evolution of the bottled wine. Cork measurements are typically expressed in millimeters with the length of the cork first and the diameter second.

The diameter of the cork is the most important measurement for creating the proper seal. A natural cork stopper should be at least 6mm wider than the smallest diameter of the neck of the bottle. However, if the cork is compressed by more than 33% of its total diameter when inserted into the bottle, the honeycomb-like cellular structure of the cork may become damaged and impact the quality of sealing. 24mm is the most common cork diameter. This size fits most industry-standard wine bottles.

The second dimension, the length of the cork, also can affect the quality of the seal. Typically, longer cork stoppers are associated with longer bottled maturing, but choosing the appropriate cork length for the bottle will prevent leakage or poor sealing.

What grade cork do I need?
Natural cork is typically classified into categories based on several criteria including visual appearance, density, humidity, surface treatment, extraction force, etc. The highest quality is Flor or Flower grade with the smallest quantity and size of pores. From highest quality to the lowest, traditional classifications include: Flor, Extra, Super or Superior, 1st, 2nd, 3rd, 4th and 5th.

High grade corks are typically used for bottling quality wines for longer periods of cellar aging. This is because the higher density corks create a better seal and offer a smooth aesthetic with fewer cracks and no greenwood. The Cary Company sells natural corks in Flor, Extra, Super and 1st quality to help you ensure a proper seal.

Guide to Natural Wine Corks
Need help deciding the best cork closure for your application? Learn more about our natural wine cork closures.


This information has been provided as a general guide. It is the customer's responsibility to select the proper container for product and application compatibility.

Additional Information

More Information
Neck FinishCork
Liner CompatibilityGlass
Grade/QualityGrade 3 - Super
MaterialNatural Cork
FDA CompliantYes
Size38 x 24mm
Dimensions24 mm Dia. x 38 mm H
Bag Pack1,000 ea.
Case Pack4,000 ea. (4 Bags)
Case Weight35 lbs.
Case Dimensions24" x 24" x 16"
IndustriesFood & Beverage
Country of ManufacturePortugal
Note:*Natural corks should not be stored longer than 6 months prior to use.
**These corks ship directly from Portugal to ensure fresh seal. Please note this product is non-returnable.
Q & A
Customer Questions
Can you ship internationally? Where are you located?
The Cary Company online ordering platform is only set up to ship within the United States. For international shipments, please contact us at 630.629.6600 or Sales@thecarycompany.com, and we will be happy to process your order. Our main warehouse and office are located in Addison, Ill. We also have warehouses in across the United States that you can see here. Thank you for choosing The Cary Company.
How long do coatings on natural corks last?
Coatings on natural corks last no longer than 6 months.
Is the timeline dependent on the type of grade the cork is?
These corks allow for wine to age from 3-10 years when correctly sealed with a compatible bottle.
Does The Cary Company have wine corkers?
Yes, The Cary Company carries a variety of cork closures.
Can I get a refund on natural wine corks?
No, this product is non-refundable. Since these ship from Portugal directly to customer, they are non-refundable.
Did you find what you were looking for?

You May Also Like