Based on this product's specifications, here are some alternatives and similar models
Biowin K54 Wine Vessel Cork 54/50 mm
Summary description:
The Biowin K54 wine vessel cork is a high-quality sealing solution designed for fermentation containers and demijohns. With a diameter of 54/50 mm, it provides an airtight seal to ensure optimal conditions during the winemaking process. This durable cork is essential for maintaining the integrity of your homemade beverages, preventing oxidation, and ensuring a secure fit for various glass vessels.