--- product_id: 83540151 title: "3 Piece Cylinder Airlock with Universal Blue 6.5 Gallon Carboy Cap" brand: "ld carlson" price: "S$16" currency: SGD in_stock: true reviews_count: 6 url: https://www.desertcart.sg/products/83540151-3-piece-cylinder-airlock-with-universal-blue-6-5-gallon store_origin: SG region: Singapore --- # Universal Blue Cap for 6.5 Gal Carboys Fits only 6.5 Gallon threaded-neck carboys 3-Piece Airlock for precise fermentation control 3 Piece Cylinder Airlock with Universal Blue 6.5 Gallon Carboy Cap **Brand:** ld carlson **Price:** S$16 **Availability:** βœ… In Stock ## Summary > πŸ”΅ Elevate your brew game with the perfect seal every time! ## Quick Answers - **What is this?** 3 Piece Cylinder Airlock with Universal Blue 6.5 Gallon Carboy Cap by ld carlson - **How much does it cost?** S$16 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.sg](https://www.desertcart.sg/products/83540151-3-piece-cylinder-airlock-with-universal-blue-6-5-gallon) ## Best For - ld carlson enthusiasts ## Why This Product - Trusted ld carlson brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - β€’ **Durable Blue Cap:** Universal blue cap crafted for threaded-neck carboys, built to last through multiple brews - β€’ **Trusted by Brewers:** Top 100 in Brewing & Fermentation Airlocks with a solid 4-star rating - β€’ **Perfect Fit, No Leaks:** Snugly seals 6.5 gallon carboys to maintain ideal fermentation pressure - β€’ **Exclusive Compatibility:** Specifically engineered for 6.5 gallon carboysβ€”no compromises on fit or function - β€’ **Precision Fermentation Control:** 3-piece airlock design ensures optimal gas release and contamination prevention ## Overview This 3-piece airlock with a universal blue cap is designed exclusively for 6.5 gallon threaded-neck carboys, providing a secure, leak-proof seal that optimizes fermentation by allowing precise gas release. Ideal for serious homebrewers seeking reliable, durable equipment that fits perfectly and enhances the brewing process. ## Description Blue Cap for 6.5 Gallon Carboys and 3-piece airlock, Not For Use With Better Bottles Review: Works great - Great product-fits a 6.5 gallon threaded-neck (acid) carboy snugly enough that I could pressure transfer to a keg with about 2 pounds of pressure (I would not recommend that, but I did it anyway). I would buy again if I needed another. Review: Extremely difficult to get on a 6 gallon carboy - I did eventually get it on the carboy after SEVERAL attempts, finally getting it over the lip gently starting on one side and sliding the opposite side down the edge of a VERY slim and narrow blade angled outward, because it wouldn't ever go over the lips on its own. It's been down there a week. I'm afraid to touch it, definitely not stable - but I'm hoping the cap will stretch a little with repeated use. Outside of that - the concept looks good. ## Features - Blue Cap for 6.5 Gallon Carboys - 3-piece airlock - Not For Use With Better Bottles - Will only fit 6.5 gallon Carboys ## Technical Specifications | Specification | Value | |---------------|-------| | Best Sellers Rank | #381,995 in Kitchen & Dining ( See Top 100 in Kitchen & Dining ) #97 in Brewing & Fermentation Airlocks | | Customer Reviews | 4.0 out of 5 stars 22 Reviews | ## Images ![3 Piece Cylinder Airlock with Universal Blue 6.5 Gallon Carboy Cap - Image 1](https://m.media-amazon.com/images/I/51kZ180q9GL.jpg) ![3 Piece Cylinder Airlock with Universal Blue 6.5 Gallon Carboy Cap - Image 2](https://m.media-amazon.com/images/I/51TliAnoQnL.jpg) ![3 Piece Cylinder Airlock with Universal Blue 6.5 Gallon Carboy Cap - Image 3](https://m.media-amazon.com/images/I/61fdgKdV7aL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Works great *by J***N on June 3, 2023* Great product-fits a 6.5 gallon threaded-neck (acid) carboy snugly enough that I could pressure transfer to a keg with about 2 pounds of pressure (I would not recommend that, but I did it anyway). I would buy again if I needed another. ### ⭐⭐⭐ Extremely difficult to get on a 6 gallon carboy *by P***O on March 18, 2023* I did eventually get it on the carboy after SEVERAL attempts, finally getting it over the lip gently starting on one side and sliding the opposite side down the edge of a VERY slim and narrow blade angled outward, because it wouldn't ever go over the lips on its own. It's been down there a week. I'm afraid to touch it, definitely not stable - but I'm hoping the cap will stretch a little with repeated use. Outside of that - the concept looks good. ### ⭐⭐⭐⭐⭐ Fit my 6.5 Italian threaded carboy *by J***J on May 31, 2023* The air lock is an added benefit I guess...didn't really need it though. ## Frequently Bought Together - 3 Piece Cylinder Airlock with Universal Blue 6.5 Gallon Carboy Cap - Fermentology Carboy Caps – 4 Pk Silicone Caps for Fermenting in 3/5/6 Gallon Glass Jugs – Homebrew Wine, Beer, Mead - Midwest Homebrewing and Winemaking Supplies Stainless Steel Racking Cane (30") --- ## Why Shop on Desertcart? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.sg/products/83540151-3-piece-cylinder-airlock-with-universal-blue-6-5-gallon](https://www.desertcart.sg/products/83540151-3-piece-cylinder-airlock-with-universal-blue-6-5-gallon) --- *Product available on Desertcart Singapore* *Store origin: SG* *Last updated: 2026-10-07*