Airlock Cork — #6.5 Drilled Rubber Stopper (Bung) 🫧

A classic #6.5 tapered rubber stopper with a center-drilled hole for mounting an airlock (or fitting tubing for a blowoff setup). Designed to seal securely and hold in place during active fermentation.

Why it works so well ✅

• Drilled through to accept an airlock or tubing

• Tapered shape seals tight and helps keep the airlock stable

• Won’t drop through when used with the correct hole size

• Easy to clean + sanitize with common brewing cleaners/sanitizers

Dimensions

• Top diameter: 50mm (1.97")

• Bottom diameter: 42mm (1.65")

• Fits a vessel hole drilled to 1 1/8" diameter

Tip: You can also insert tubing directly into the drilled hole to run a simple blowoff line.