#8.5 Rubber Stopper with Airlock Hole - High-Quality Silicone/Rubber
$1699
#8.5 Rubber Stopper with Airlock Hole - High-Quality Silicone/Rubber
#8.5 Rubber Stopper with Airlock Hole - High-Quality Silicone/Rubber
In stock
$1699
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- Size: #8.5 (approx. 36mm - 43mm diameter).
- Type: Drilled (with 3/8" Hole for Airlock).
- Material: Food-Grade Durable Rubber.
- Application: Sealing 5 and 6-Gallon Carboys for fermentation.
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The #8.5 Rubber Stopper with Hole is a professional-grade closure designed for 5 and 6-gallon glass carboys. Made from high-quality, food-grade rubber, it provides a 100% airtight and liquid-tight seal. This model features a pre-drilled center hole, specifically sized to accommodate standard twin-bubble or 3-piece airlocks. Its tapered design ensures a snug fit across the neck of most standard homebrew carboys, protecting your beverage from oxygen and contaminants during active fermentation.
Brewery Tip: To ensures a perfect seal, always ensure both the stopper and the carboy neck are dry before insertion. If the stopper keeps "slipping out," a tiny amount of sanitizer can act as a lubricant, but drying is preferred for long-term aging. Sanitize with Star San or IO-Star before every use. This size is specifically optimized for standard PET and Glass carboys.