Large Universal Stopper – Silicone Stopper for 54L Demijohns

The Large Universal Stopper is a durable, reusable silicone stopper designed to fit large glass vessels, including 54L demijohns. If you’re working with larger wine, cider, or brewing containers, having the right stopper matters. A proper seal keeps your airlock secure, helps protect your batch, and makes the whole setup easier to manage.

Unlike traditional rubber bungs, this stopper is made from white silicone using FDA-grade, BPA-free materials. Silicone is a great choice for beverage use because it is flexible, long-lasting, easy to clean, and resistant to absorbing flavours or odours. It also handles repeated use well, making it a practical upgrade for anyone who regularly works with larger vessels.

The universal shape allows it to sit securely in the mouth of compatible containers, creating a snug seal without needing to force it into place. It’s especially useful for fitting an airlock to a 54L demijohn, whether you’re making wine, cider, mead, or other beverages at home.

With a Shore hardness of 70±5 Shore A°, this stopper has enough firmness to hold its shape while still offering the flexibility needed for a reliable seal. It also has excellent heat resistance, with a maximum temperature rating of 180°C / 356°F, making it easy to clean and sanitize as needed.

If you’ve been using older rubber stoppers, a silicone universal stopper is a worthwhile improvement. It’s cleaner, more durable, and easier to keep in good condition over time.

Product Details

• Size: Large
• Fits: 54L demijohns
• Material: Silicone
• Colour: White
• FDA-grade materials
• BPA free
• Shore hardness: 70±5 Shore A°
• Maximum temperature: 180°C / 356°F
• Reusable and easy to clean