Rubber End Cap Ø57mm

The 57mm rubber cap for narrow neck demijohns is a must-have component for anyone working with fermentation or liquid preservation. Made from strong, high-grade rubber, this bung cap fits snugly over the demijohn opening, creating a reliable seal. Its durable build helps prevent air from entering the vessel, protecting the contents from oxidation and contamination. Perfect for winemakers, homebrewers, and those storing sensitive liquids, it ensures a controlled and stable environment.

A rubber bung cap plays a key role in preserving the quality of stored liquids. By forming an airtight closure, it helps maintain the original flavours and aromas of beverages. This is especially critical during fermentation, where oxygen exposure can compromise the batch and lead to bacterial growth. The rubber is resistant to wear and cracking, making it a dependable option for repeated use. Both hobbyists and professionals benefit from its consistent performance and secure fit.

Beyond fermentation, this rubber cap offers practical advantages in storage and transport. It minimises the risk of spills and leaks, which is essential when handling larger volumes. The user-friendly design allows for quick installation and removal, providing ease of use while maintaining a tight seal. Overall, this rubber bung cap is a reliable and effective solution that helps preserve the integrity of liquids throughout the entire storage and fermentation process.