---
product_id: 254089526
title: "3 Piece Cylinder Airlock with Universal Blue 6.5 Gallon Carboy Cap"
brand: "ld carlson"
price: "€ 27.78"
currency: EUR
in_stock: true
reviews_count: 5
category: "Ld Carlson"
url: https://www.desertcart.nl/products/254089526-3-piece-cylinder-airlock-with-universal-blue-6-5-gallon
store_origin: NL
region: Netherlands
---

# Universal Blue Cap for 6.5 Gal Carboys 3-Piece Airlock for Precise Fermentation Control Secure Fit for Threaded-Neck Carboys 3 Piece Cylinder Airlock with Universal Blue 6.5 Gallon Carboy Cap

**Brand:** ld carlson
**Price:** € 27.78
**Availability:** ✅ In Stock

## Summary

> 🔵 Elevate Your Brew Game with Precision & Style!

## 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?** € 27.78 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.nl](https://www.desertcart.nl/products/254089526-3-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

- • **Trusted by Winemakers:** Ranked #24 in Winemaking essentials—join a community of passionate brewers elevating their craft.
- • **Exclusive Compatibility:** Engineered specifically for LD Carlson carboys; not compatible with Better Bottles to guarantee performance.
- • **Durable Blue Cap Material:** Crafted to withstand pressure transfers and repeated use without warping or leaks.
- • **Advanced 3-Piece Airlock Design:** Ensures optimal gas release and contamination protection during fermentation for flawless brews.
- • **Perfect Fit for 6.5 Gallon Carboys:** Snug, leak-resistant seal designed exclusively for 6.5 gallon threaded-neck carboys—no compromises.

## Overview

The LD Carlson 3 Piece Cylinder Airlock with Universal Blue 6.5 Gallon Carboy Cap is a specialized fermentation accessory designed for 6.5 gallon threaded-neck carboys. Featuring a durable blue cap and a precise 3-piece airlock, it ensures secure, leak-resistant fermentation control. Not compatible with Better Bottles, this product is a trusted choice among winemakers seeking reliable, professional-grade equipment.

## Description

Blue Cap for 6.5 Gallon Carboys and 3-piece airlock, Not For Use With Better Bottles

Review: 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: 👍🏼

## 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 |
|---------------|-------|
| ASIN | B06W55V3DK |
| Best Sellers Rank | #63,741 in Grocery ( See Top 100 in Grocery ) #24 in Winemaking |
| Brand | LD Carlson |
| Color | Multicolor |
| Customer Reviews | 3.7 3.7 out of 5 stars (22) |
| Date First Available | 4 May 2017 |
| Item Weight | 59 g |
| Model Number | Does Not Apply |
| Product Dimensions | 6.35 x 6.35 x 12.7 cm; 58.97 g |

## Images

![3 Piece Cylinder Airlock with Universal Blue 6.5 Gallon Carboy Cap - Image 1](https://m.media-amazon.com/images/I/51kZ180q9GL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by J***N on 3 June 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.

### ⭐⭐⭐⭐⭐ Review
*by S***D on 1 September 2025*

👍🏼

### ⭐⭐⭐ Review
*by P***O on 18 March 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.

## 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")

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**Shop now:** [https://www.desertcart.nl/products/254089526-3-piece-cylinder-airlock-with-universal-blue-6-5-gallon](https://www.desertcart.nl/products/254089526-3-piece-cylinder-airlock-with-universal-blue-6-5-gallon)

---

*Product available on Desertcart Netherlands*
*Store origin: NL*
*Last updated: 2026-02-13*