---
product_id: 49631135
title: "Fastrack Twin Bubble Airlock for Fermentation | Hydrolocks for Fermenting Wine and Beer Making | BPA-Free Cylinder Airlock Used for Brewing Wine, Beer, Pickles & More | Transparent Airlock Set of 2"
brand: "fastrack"
price: "£23.91"
currency: GBP
in_stock: true
reviews_count: 5
category: "Fast Rack"
url: https://www.desertcart.co.uk/products/49631135-fastrack-twin-bubble-airlock-for-fermentation-hydrolocks-for-fermenting-wine
store_origin: GB
region: United Kingdom
---

# transparent design for full fermentation visibility BPA-free, food-grade safe materials airtight seal prevents oxidation Fastrack Twin Bubble Airlock for Fermentation | Hydrolocks for Fermenting Wine and Beer Making | BPA-Free Cylinder Airlock Used for Brewing Wine, Beer, Pickles & More | Transparent Airlock Set of 2

**Brand:** fastrack
**Price:** £23.91
**Availability:** ✅ In Stock

## Summary

> 🍾 Brew Boldly, Bubble Transparently!

## Quick Answers

- **What is this?** Fastrack Twin Bubble Airlock for Fermentation | Hydrolocks for Fermenting Wine and Beer Making | BPA-Free Cylinder Airlock Used for Brewing Wine, Beer, Pickles & More | Transparent Airlock Set of 2 by fastrack
- **How much does it cost?** £23.91 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/49631135-fastrack-twin-bubble-airlock-for-fermentation-hydrolocks-for-fermenting-wine)

## Best For

- fastrack enthusiasts

## Why This Product

- Trusted fastrack brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Effortless Gas Release:** Automatic CO2 venting at room temperature means zero manual fuss, just pure brewing flow.
- • **Durable & Safe Crafting:** Made from BPA-free, food-grade plastic and rubber for a reliable, toxin-free brewing experience.
- • **Crystal Clear Monitoring:** Watch your brew bubble and evolve with unmatched transparency—never miss a fermentation moment.
- • **Universal Fit & Flexibility:** Designed to snugly fit a variety of jug sizes with a flexible bung—perfect for your custom setups.
- • **Multi-Purpose Fermentation Ally:** Ideal for beer, wine, pickles, kimchi, and more—your all-in-one fermentation sidekick.

## Overview

The Fastrack Twin Bubble Airlock set offers a durable, BPA-free, and fully transparent fermentation solution that automatically vents CO2 while preventing oxidation. Designed for versatility, it fits various jug sizes securely and supports a wide range of fermentation projects from beer and wine to pickles and kimchi, empowering homebrewers to monitor and perfect their craft with ease.

## Description

AUTOMATIC TRANSPARENT AIRLOCK: FastRack airlocks are stronger, more transparent, and made of food-grade materials. You will easily see the entire fermentation process! Due to the airtight design of our fermentation airlock we isolate the air and prevent oxidation. Fastrack brewing airlock exhausts automatically at room temperature without manual intervention.

Review: Reliable airlocks for small home wine batches - These worked great during a recent 5 gallon wine fermentation. The bungs sealed tightly in my glass carboy and I didn’t notice any leaks or pressure issues. The twin bubble design made it easy to keep an eye on fermentation activity, especially during the first few days. They also cleaned up easily afterward which is always a plus with brewing equipment. Simple product, but dependable.
Review: Product works great, happy buyer. - These are actually great quality for the price. The rubber stoppers are good quality rubber and the plastic is decent quality as well. They work perfectly as advertised. I recommend for anyone interested in buying to check rubber stopper measurements and the measurements of the hole on your jug or carbon to make sure you buy the right size. Would recommend to others and buy again in the future.

## Features

- AUTOMATIC TRANSPARENT AIRLOCK: FastRack airlocks are stronger, more transparent, and made of food-grade materials. You will easily see the entire fermentation process! Due to the airtight design of our fermentation airlock we isolate the air and prevent oxidation. Fastrack brewing airlock exhausts automatically at room temperature without manual intervention.
- EASY & SIMPLE TO USE: Insert the assembled airlock into the hole of the rubber stopper that fits your current jug or carboy. Fill the Bubbler Airlock with water and insert the drilled stopper or bung to vent gasses during fermentation. The airlock cap should always stay on top when in use to allow gas to escape and prevent the water inside from quickly spilling out if tipped over.
- HOW IT WORKS: Airlocks enable CO2 to be released during fermentation and trap oxygen from entering the fermenter. The bubbler style airlock is the preferred airlock for secondary fermentation, as it is possible to monitor the pressure inside the fermenter, and is the go to winemaking airlock.
- WIDELY USED: The fermentation airlock can be used in various fermentation projects to preserve food as well! The brewing airlock can be used to brew craft beer or wine, but also used for sauerkraut, kimchi, etc.
- SATISFACTION GUARANTEE: At FastRack we pride ourselves on creating products that can be trusted by our customers. Buyer satisfaction is our top priority, maybe, sometimes accidents happen during shipping. If anything is cracked or broken, please let us know and we’ll do our best to make sure you are 100% satisfied with our product and service.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00A6TRKO4 |
| Best Sellers Rank | 2,371,601 in Home & Kitchen ( See Top 100 in Home & Kitchen ) 175 in Fermentation Airlocks |
| Brand | FastRack |
| Brand Name | FastRack |
| Colour | Clear/Tan |
| Customer Reviews | 4.6 out of 5 stars 13,431 Reviews |
| Finish Type | Clear Cut |
| Finish type | Clear Cut |
| Global Trade Identification Number | 00825392000052 |
| Included Components | Airlock and Stopper (Pack of 2) |
| Is Customizable? | No |
| Item Dimensions L x W | 8L x 5W centimetres |
| Item Type Name | Bubble Airlock and Bung (2pk) |
| Item Weight | 30 Grams |
| Item weight | 30 Grams |
| Manufacturer | Fermtech |
| Manufacturer Part Number | B00A6TRKO4 |
| Material | Plastic Rubber |
| Material Type | Plastic Rubber |
| Model Number | B00A6TRKO4 |
| Number of Items | 2 |
| Product dimensions | 8L x 5W centimetres |
| UPC | 628504292792 825392000052 |
| Unit Count | 2.0 count |

## Product Details

- **Brand:** FastRack
- **Colour:** Clear/Tan
- **Finish type:** Clear Cut
- **Is customisable:** No
- **Item weight:** 30 Grams
- **Manufacturer:** Fermtech
- **Material:** Plastic Rubber
- **Product dimensions:** 8L x 5W centimetres
- **UPC:** 628504292792 825392000052
- **Unit count:** 2.0 count

## Images

![Fastrack Twin Bubble Airlock for Fermentation | Hydrolocks for Fermenting Wine and Beer Making | BPA-Free Cylinder Airlock Used for Brewing Wine, Beer, Pickles & More | Transparent Airlock Set of 2 - Image 1](https://m.media-amazon.com/images/I/41lj7thLfSL.jpg)
![Fastrack Twin Bubble Airlock for Fermentation | Hydrolocks for Fermenting Wine and Beer Making | BPA-Free Cylinder Airlock Used for Brewing Wine, Beer, Pickles & More | Transparent Airlock Set of 2 - Image 2](https://m.media-amazon.com/images/I/51Y-8lnz-yL.jpg)
![Fastrack Twin Bubble Airlock for Fermentation | Hydrolocks for Fermenting Wine and Beer Making | BPA-Free Cylinder Airlock Used for Brewing Wine, Beer, Pickles & More | Transparent Airlock Set of 2 - Image 3](https://m.media-amazon.com/images/I/512gF1jTHnL.jpg)
![Fastrack Twin Bubble Airlock for Fermentation | Hydrolocks for Fermenting Wine and Beer Making | BPA-Free Cylinder Airlock Used for Brewing Wine, Beer, Pickles & More | Transparent Airlock Set of 2 - Image 4](https://m.media-amazon.com/images/I/416iaYbMayL.jpg)
![Fastrack Twin Bubble Airlock for Fermentation | Hydrolocks for Fermenting Wine and Beer Making | BPA-Free Cylinder Airlock Used for Brewing Wine, Beer, Pickles & More | Transparent Airlock Set of 2 - Image 5](https://m.media-amazon.com/images/I/61ZDaeRR8XL.jpg)

## Questions & Answers

**Q: If they are 90% chance this is made in china how can we know the plastic is bpa free?**
A: Don't see that it matters. Nothing passes through the device into the carboy and positive to static neutral pressure inside prevents air from entering. Zero contact means no chance of transfer.

**Q: Can the airlock be removed from the bung and used with other standard bungs?**
A: Yes, the twin bubble airlock can be removed from the bung.

**Q: what is the height of these from top to bottom?**
A: aloha it is 7 inches.Try making "mead" it is amazingly good even with regular yeast! Add raisins

**Q: Will this fit my 5 gallon class jug?**
A: Yes. The universal bungs that come with the twin bubble airlocks are designed for 3, 5 & 6 gallon glass carboys.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Reliable airlocks for small home wine batches
*by C***S on 20 May 2026*

These worked great during a recent 5 gallon wine fermentation. The bungs sealed tightly in my glass carboy and I didn’t notice any leaks or pressure issues. The twin bubble design made it easy to keep an eye on fermentation activity, especially during the first few days. They also cleaned up easily afterward which is always a plus with brewing equipment. Simple product, but dependable.

### ⭐⭐⭐⭐⭐ Product works great, happy buyer.
*by A***R on 27 April 2020*

These are actually great quality for the price. The rubber stoppers are good quality rubber and the plastic is decent quality as well. They work perfectly as advertised. I recommend for anyone interested in buying to check rubber stopper measurements and the measurements of the hole on your jug or carbon to make sure you buy the right size. Would recommend to others and buy again in the future.

### ⭐⭐⭐⭐⭐ Good product
*by A***T on 11 August 2018*

Quality is good

## Frequently Bought Together

- Twin Bubble Airlock and Carboy Bung (Pack of 2)
- Lalvin EC-1118 Wine Yeast (10 Pack) - Champagne Yeast - Make Wine Cider Mead Kombucha At Home - 5 g Sachets - Saccharomyces cerevisiae - Sold by CAPYBARA Distributors Inc.
- Fermtech - Auto Siphon Mini with 6 Ft of Food Safe Tubing & Clamp - Easy Home Brewing, Winemaking Kit, Complete System for Beer, Wine, Liquid Transfer & Fermentation Tools - Perfect for Small Batches

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*Product available on Desertcart United Kingdom*
*Store origin: GB*
*Last updated: 2026-05-25*