---
product_id: 353385350
title: "Carboy Caps – 4 Pk Silicone Caps for Fermenting in 3/5/6 Gallon Glass Jugs – Homebrew Wine, Beer, Mead"
brand: "fermentology"
price: "€ 40.35"
currency: EUR
in_stock: false
reviews_count: 13
category: "Fermentology"
url: https://www.desertcart.nl/products/353385350-carboy-caps-4-pk-silicone-caps-for-fermenting-in-3
store_origin: NL
region: Netherlands
---

# Fits 3/5/6 gal glass jugs Dual tube connections w/ caps Dishwasher & food safe silicone Carboy Caps – 4 Pk Silicone Caps for Fermenting in 3/5/6 Gallon Glass Jugs – Homebrew Wine, Beer, Mead

**Brand:** fermentology
**Price:** € 40.35
**Availability:** ❌ Out of Stock

## Summary

> 🍺 Seal your craft, savor the moment—brew like a pro!

## Quick Answers

- **What is this?** Carboy Caps – 4 Pk Silicone Caps for Fermenting in 3/5/6 Gallon Glass Jugs – Homebrew Wine, Beer, Mead by fermentology
- **How much does it cost?** € 40.35 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.nl](https://www.desertcart.nl/products/353385350-carboy-caps-4-pk-silicone-caps-for-fermenting-in-3)

## Best For

- fermentology enthusiasts

## Why This Product

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

## Key Features

- • **Premium Food-Safe Silicone:** BPA-free, phthalate-free, and dishwasher safe for hassle-free cleaning and safe contact with your brews.
- • **Cork Replacement Innovation:** Twin caps double as airtight stoppers, eliminating the need for traditional corks—seal in freshness effortlessly.
- • **Versatile Brewing Companion:** Ideal for fermenting wine, beer, mead, kombucha, and more—join the homebrew revolution with confidence.
- • **Universal Fit for Every Brew:** Stretchy silicone caps snugly seal 3, 5, and 6-gallon glass carboys—no more guessing or leaks.
- • **Dual Tube Ports with Smart Caps:** Each lid features two connection tubes with removable caps, perfect for airlocks or siphons—flex your fermentation setup.

## Overview

These 4-pack silicone carboy caps fit 3, 5, and 6-gallon glass jugs, featuring dual tube connections with removable caps that double as airtight stoppers. Made from premium, food-safe, dishwasher-safe silicone, they provide a universal, secure seal for fermenting wine, beer, mead, kombucha, and other homebrews, streamlining your fermentation process with professional-grade convenience.

## Description

Shop Fermentology at the desertcart Home Brewing & Wine Making store. Free Shipping on eligible items. Everyday low prices, save up to 50%.

Review: Secure fit on all my different carboys - These carbon caps work very well easy to install and clean. I have several different mugs of carboys including a few old 5 gal water bottles each one sealed very securely
Review: fermentation caps - Great find, easy to use for fermentation on a variety of carboy sizes

## Features

- HOME BREW 3/5/6 GAL CARBOY JUGS – For fermenting homemade wine, beer, mead, kombucha and more in glass jugs; the lids stretch to fit over the mouth of the jug for a universal fit
- INCLUDES 4 SILICONE LIDS/CAPS – Compatible with home fermenter or brew supplies and accessories, including airlocks, siphons, racking canes, tubing
- 2 CONNECTION TUBES WITH CAPS – Each lid has two tubes to connect with brewing accessories; tubes can be covered with included white caps; each lid includes 2 housing nubs to hold the caps when not in use
- TWIN CAPS DOUBLE AS A LID/CORK – Cover both tube connection openings to block off oxygen and create a seal with stopper caps; replaces need for corks
- FOOD AND DISHWASHER SAFE – Made of high-quality silicone that is food safe, BPA-free and phthalate-free; all parts can be washed in the dishwasher

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B09BWPSDGN |
| Best Sellers Rank | #163,606 in Kitchen & Dining ( See Top 100 in Kitchen & Dining ) #183 in Brewing & Fermentation Fermenters |
| Customer Reviews | 4.6 4.6 out of 5 stars (344) |
| Date First Available | August 4, 2021 |
| Item Weight | 7 ounces |
| Item model number | FTLGYCBC4 |
| Manufacturer | Fermentology |
| Package Dimensions | 5 x 4.02 x 2.6 inches |

## Images

![Carboy Caps – 4 Pk Silicone Caps for Fermenting in 3/5/6 Gallon Glass Jugs – Homebrew Wine, Beer, Mead - Image 1](https://m.media-amazon.com/images/I/71Y1AoE7OAL.jpg)
![Carboy Caps – 4 Pk Silicone Caps for Fermenting in 3/5/6 Gallon Glass Jugs – Homebrew Wine, Beer, Mead - Image 2](https://m.media-amazon.com/images/I/812vmxLSWsL.jpg)
![Carboy Caps – 4 Pk Silicone Caps for Fermenting in 3/5/6 Gallon Glass Jugs – Homebrew Wine, Beer, Mead - Image 3](https://m.media-amazon.com/images/I/81Bku5M6gnL.jpg)
![Carboy Caps – 4 Pk Silicone Caps for Fermenting in 3/5/6 Gallon Glass Jugs – Homebrew Wine, Beer, Mead - Image 4](https://m.media-amazon.com/images/I/81JW2m3iBEL.jpg)
![Carboy Caps – 4 Pk Silicone Caps for Fermenting in 3/5/6 Gallon Glass Jugs – Homebrew Wine, Beer, Mead - Image 5](https://m.media-amazon.com/images/I/81iCrbKwnDL.jpg)

## Questions & Answers

**Q: if I get these caps and want to put together a blow off situation, what size food-grade tubing would I need to purchase for a tight seal?**
A: The size that fits tightly on the cap? I would measure the nipple on the cap and buy tubing accordingly.

**Q: Will these caps hold a vacuum? Want to use it for degassing.**
A: The fermenting lids I have are not the same as these.  Mine would not hold a vacuum.

**Q: how do you syphon through the lid?**
A: There are two holes in the lid one is for a air lock  the other is for a racking cane or tube for siphoning. Both holes have caps to plug them.

**Q: Would this work for long term wine storage? (Decades)**
A: I am not sure if this would work for decades. I have used it to condition beer after primary fermentation but for only 30 days.

As long as you can keep oxygen out there shouldn’t be an issue. The major concern would be how tight the seal is with your carboy.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Secure fit on all my different carboys
*by B***E on September 27, 2025*

These carbon caps work very well easy to install and clean. I have several different mugs of carboys including a few old 5 gal water bottles each one sealed very securely

### ⭐⭐⭐⭐⭐ fermentation caps
*by K***R on December 27, 2025*

Great find, easy to use for fermentation on a variety of carboy sizes

### ⭐⭐⭐⭐⭐ Great quality, not universal fit
*by R***B on September 18, 2025*

It’s high quality, but isn’t truly universal. I have a 1974 6.5 gallon glass with a screw-on cap, and the cap does not fit. I can press the cap against the lid tightly for the sake of starting a syphon (racking cane in one hole, blow on the other hold *pause*) but other than that it’s useless to me. If it does fit your carboy, it’s a great product

## Frequently Bought Together

- Fermentology Carboy Caps – 4 Pk Silicone Caps for Fermenting in 3/5/6 Gallon Glass Jugs – Homebrew Wine, Beer, Mead
- 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 Netherlands*
*Store origin: NL*
*Last updated: 2026-03-16*