---
product_id: 75119144
title: "Home Brew Stuff Brass CO2 Gas Cylinder O-Ring Seal - 1 Pack"
brand: "home brew stuff"
price: "€ 24.63"
currency: EUR
in_stock: true
url: https://www.desertcart.ie/products/75119144-home-brew-stuff-brass-co2-gas-cylinder-o-ring-seal
store_origin: IE
region: Ireland
---

# Leak-proof O-ring seal Standard valve threading Precision brass build Home Brew Stuff Brass CO2 Gas Cylinder O-Ring Seal - 1 Pack

**Brand:** home brew stuff
**Price:** € 24.63
**Availability:** ✅ In Stock

## Summary

> 🔧 Seal your brew’s fate with leak-proof confidence!

## Quick Answers

- **What is this?** Home Brew Stuff Brass CO2 Gas Cylinder O-Ring Seal - 1 Pack by home brew stuff
- **How much does it cost?** € 24.63 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ie](https://www.desertcart.ie/products/75119144-home-brew-stuff-brass-co2-gas-cylinder-o-ring-seal)

## Best For

- home brew stuff enthusiasts

## Why This Product

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

## Key Features

- • **High-Temp Resilience:** Operates flawlessly up to 120°C, ensuring reliability under pressure.
- • **Compact & Lightweight:** At just 3 grams and 0.75 inches diameter, it fits discreetly without adding bulk.
- • **Seamless Leak Prevention:** Say goodbye to frustrating CO2 leaks with a fail-safe brass and O-ring combo.
- • **Plug & Play Compatibility:** Screws directly into any standard CO2 cylinder valve—no hacks or mods needed.
- • **Durable Brass Construction:** Engineered for longevity and corrosion resistance, built to last through countless brews.

## Overview

The Home Brew Stuff Brass CO2 Gas Cylinder O-Ring Seal is a precision-engineered brass fitting with an integrated O-ring that screws directly into standard CO2 cylinder valves. Designed to eliminate leaks without any modifications, it offers durable, high-temperature resistant sealing for homebrewers seeking reliable, hassle-free carbonation control.

## Description

The leak stopper is the solution to leaky metal-on-metal or fiber washer connections between your CO2 cylinder and regulator. Brass with O-ring insert, it threads directly into the cylinder with no modification and provides a tight, leak-proof seal.

## Features

- Ends leaks between cylinder and regulator
- Screws into standard CO2 cylinder valve
- No cylinder or regulator modifications necessary
- Country of origin: China

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | Home Brew Stuff |
| Part number | LS1 |
| Item Weight | 3 g |
| Item model number | LS1 |
| Size | S |
| Colour | Brass |
| Style | CO2 Leak Stopper |
| Material | Brass |
| Item Package Quantity | 1 |
| Temperature Range | 1.2E+2 Degrees Celsius |
| Cutting Diameter | 0.75 Inches |
| Measurement System | US |
| Batteries included? | No |
| Batteries Required? | No |
| Item diameter | 0.75 Inches |

## Product Details

- **Material:** Brass
- **Nominal inside diameter:** 4.2 Millimetres
- **Item diameter:** 0.75 Inches
- **Brand:** Home Brew Stuff
- **Colour:** Brass

## Images

![Home Brew Stuff Brass CO2 Gas Cylinder O-Ring Seal - 1 Pack - Image 1](https://m.media-amazon.com/images/I/91E38HGQWPL.jpg)
![Home Brew Stuff Brass CO2 Gas Cylinder O-Ring Seal - 1 Pack - Image 2](https://m.media-amazon.com/images/I/31VY+CBjNRL.jpg)
![Home Brew Stuff Brass CO2 Gas Cylinder O-Ring Seal - 1 Pack - Image 3](https://m.media-amazon.com/images/I/31BNncaEmkL.jpg)

## Questions & Answers

**Q: I'm confused. My  5lb co2 tank has male threads and my regulator has female threads. How does it go onto my equipment?  Photo will help.**
A: This fits into the cylinder male fitting.  It will not be tight nor a snug fit.  Once the regulator (female fitting) is attached it acts as an amazingly good o-ring.  I have one on both my tanks (1 kegerator 5lb and 1 aquarium 10lb cylinder).

**Q: To install this do i need to remove the default brass valve on the top of the co2 tank?  i have a smaller co2 paint
ball tank**
A: These are made for large CGA320 Industrial Co2 valves. They screw into the outlet with an allen wrench ILO of the plastic washer.

**Q: What size replacement O-rings are required for this, and what material?**
A: I don't know the size because we purchase these in bulk from the manufacturer. But you can come up with the size by disassembling one and comparing the O-Ring dimensions to a standard size chart. I believe the O-Ring material is Neoprene.

**Q: brand new 20lb tank and taprite american reg. niether will let "co2 leak stopper" from "homebrewing" thread in. will this one work?**
A: Just FYI, it screws into the the tank outlet, not the regulator.

## Frequently Bought Together

- Leak Stopper - Permanent O-Ring for CO2 Gas Cylinders
- Premium Nylon CO2 Regulator Washers, Self Centering, Fits All CGA-320 Fittings (12)
- Learn to Brew Nylon Washers for Co2 Regulators, Set of 6

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**Shop now:** [https://www.desertcart.ie/products/75119144-home-brew-stuff-brass-co2-gas-cylinder-o-ring-seal](https://www.desertcart.ie/products/75119144-home-brew-stuff-brass-co2-gas-cylinder-o-ring-seal)

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*Product available on Desertcart Ireland*
*Store origin: IE*
*Last updated: 2026-02-03*