Seal Your Fermentation with Confidence Using #10 Solid Rubber Stoppers Our #10 Solid Rubber Stopper is a dependable sealing solution for any fermentation vessel or container where airtight closure is essential. Designed without a hole, this stopper is ideal for times when you need a complete seal—such as during storage, transport, or resting stages of your homebrew. Unlike drilled stoppers made for airlocks or thermowells, this solid version is specifically intended to block all airflow, ensuring your contents stay uncontaminated and protected. Whether you're working with carboys, demijohns, or large fermenters, the #10 fits tightly for reliable performance. Key Features Airtight Seal: Solid plug design prevents any airflow or gas exchange. High-Quality Rubber: Durable, flexible, and reusable without cracking or splitting. Wide Compatibility: Fits standard carboys, fermenters, and lab-style containers with a #10 opening. Simple Application: Insert firmly into the vessel opening for a snug, secure fit. Usage Tips Ideal for sealing carboys or fermenters when aging or storing beverages like beer, wine, cider, or mead. Great for isolating experimental batches or closing off secondary fermenters. Specifications Stopper Size: #10 Top Diameter: ~1.625 inches (41 mm) Bottom Diameter: ~1.312 inches (33 mm) Material: Food-grade rubber Hole: None (solid) Why Choose This Stopper? Solid rubber stoppers are an essential tool for any homebrewer. Their simple but effective design ensures fermentation vessels remain secure during periods when air exposure is not desired. At SoCal Brewing Supply, we only stock high-quality stoppers that are reliable, safe, and built to last. #10 Stopper Fit Notes Use a #10 solid stopper only with vessels where the taper seats securely without being forced. Test the dry fit before filling or sanitizing the vessel. Replace rubber stoppers that become cracked, sticky, stained, or hard to clean. Related supplies: fermenters and accessories.
