# Biowin Wine Bottle Corks 21/16mm, 10 Pieces

**URL:** https://aio.lv/en/product--biowin-652201--12506090
**Data updated:** 2026-06-10 09:22 (EEST)
**Category:** Corkscrews & Bottle Accessories
**Manufacturer:** Biowin
**Manufacturer code:** 652201
**EAN:** 5904816103502
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 3.99 €
**Prices and availability valid until:** 2026-07-15 23:59
**Price without VAT (21%):** 3.30 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--biowin-652201--12506090

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 22.06.2026 | free |
| Pickup points | 29.06.2026 | 1.99 EUR |
| Courier delivery to door | 29.06.2026 | 4.99 EUR |

## Summary description

Set of 10 high-quality wine bottle corks by Biowin, featuring a tapered design with a diameter of 21/16 mm. These natural cork stoppers are designed for sealing standard wine bottles, ensuring an airtight fit to preserve the quality and aroma of homemade wines. Ideal for home winemaking and bottling processes, these durable corks provide reliable protection against oxidation and contamination.

## Long description

The Biowin wine bottle corks are essential accessories for home winemaking, designed to provide a secure and reliable seal for your bottled beverages. Each set includes 10 high-quality natural cork stoppers, specifically engineered with a tapered shape measuring 21 mm at the top and 16 mm at the base. These corks are crafted to fit standard wine bottles perfectly, creating an airtight barrier that protects your wine from oxidation and external contaminants, thereby preserving the intended flavor profile and aroma over time.
Advantages
These natural corks offer excellent elasticity and durability, ensuring they maintain their shape and sealing properties during the storage period. The tapered design facilitates easier insertion into the bottle neck while providing a snug fit that prevents leaks. By using these high-quality stoppers, you ensure that your homemade wine remains protected from air exposure, which is critical for successful aging and maintaining the quality of your craft.
Suitable for
Sealing standard glass wine bottles
Preserving homemade wines and spirits
Short to medium-term storage of bottled beverages
Home winemaking and bottling projects
When it may not be suitable
These corks are not intended for use with bottles that have non-standard neck diameters, such as specialized beer bottles or wide-mouth containers. They are also not recommended for long-term aging spanning many years, as natural corks may eventually lose their elasticity compared to high-density synthetic alternatives.
Key specifications
Material: Natural cork
Diameter: 21 mm (top) / 16 mm (base)
Quantity: 10 pieces per pack
Color: Brown
How to use
Before inserting the cork, it is recommended to soak it in clean, warm water for a few minutes to increase its flexibility and ensure a tighter seal. Once softened, use a manual or mechanical corking device to press the cork into the bottle neck. Ensure the bottle neck is dry and clean before insertion to prevent slippage or contamination. After corking, keep the bottles in an upright position for a short period to allow the cork to expand and settle before storing them horizontally.
What to consider before purchase
Verify the inner diameter of your bottle necks to ensure compatibility with the 21/16 mm dimensions
Ensure you have a suitable corking tool for proper application
Consider the intended storage duration of your wine
Usage recommendations
For the best results, store your corked wine bottles in a cool, dark place with stable humidity levels to prevent the cork from drying out and shrinking over time.

## FAQ

### How much does the Biowin Wine Bottle Corks 21/16mm - 10 Pack cost, and is it available for purchase?

The price is 3.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 110 pcs. are in stock, and you can place your purchase right now with delivery across Latvia and Europe or choose pickup at the Riga collection point. We offer favorable purchase terms, including the option to split the payment into convenient monthly installments. Availability and price are updated in real time, so we recommend placing your order in advance.

### If I order this product today, when will I receive my order?

If you place your order today, delivery will be as fast and convenient as possible. You will be able to pick up your order on 22.06.2026 at the Riga pickup point or choose delivery across Latvia and Europe. We carefully inspect every purchase and pack it securely for safe transportation.

### What payment options are available?

AiO.lv offers several payment methods: Bank transfer, Bank cards on-line, Apple Pay, Google Pay. All transactions are 100% secure and encrypted.

### Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

### What is the warranty period?

All Biowin products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized Biowin service centers and through AiO.lv

### Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

### Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. More information about warranty service: https://aio.lv/en/warranty

## Image

https://aio.lv/img/cache/product/12506090/68847327_large.webp