---
product_id: 44573070
title: "MRbrew Stainless Steel Carbonation Cap, 2 PCS Ball Lock Keg Post 5/16'' Beer Line Nipple Barb & CO2 Coupling for Soda Drink, PET Bottles Counter Pressure Bottle Filling Cap with Gasket &O-Rings"
brand: "mrbrew"
price: "€ 37.28"
currency: EUR
in_stock: true
url: https://www.desertcart.nl/products/44573070-mrbrew-stainless-steel-carbonation-cap-2-pcs-ball-lock-keg
store_origin: NL
region: Netherlands
---

# Snug 2L PET bottle fit Universal ball lock fit 60 PSI airtight seal MRbrew Stainless Steel Carbonation Cap, 2 PCS Ball Lock Keg Post 5/16'' Beer Line Nipple Barb & CO2 Coupling for Soda Drink, PET Bottles Counter Pressure Bottle Filling Cap with Gasket &O-Rings

**Brand:** mrbrew
**Price:** € 37.28
**Availability:** ✅ In Stock

## Summary

> 🍻 Lock in freshness, unleash flavor – your homebrew’s new best friend!

## Quick Answers

- **What is this?** MRbrew Stainless Steel Carbonation Cap, 2 PCS Ball Lock Keg Post 5/16'' Beer Line Nipple Barb & CO2 Coupling for Soda Drink, PET Bottles Counter Pressure Bottle Filling Cap with Gasket &O-Rings by mrbrew
- **How much does it cost?** € 37.28 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/44573070-mrbrew-stainless-steel-carbonation-cap-2-pcs-ball-lock-keg)

## Best For

- mrbrew enthusiasts

## Why This Product

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

## Key Features

- • **Rock-Solid 60 PSI Seal:** Keep carbonation locked in with a premium gasket and O-ring combo that won’t leak under pressure.
- • **Universal Ball Lock Ready:** Seamlessly connects with gas and liquid ball lock disconnects for versatile keg and cleaning setups.
- • **Precision Fit for 2L PET Bottles:** Screws on smoothly with exact threading to ensure a leak-proof, no-fuss carbonation cap.
- • **Durable 304 Stainless Steel Build:** Rust-resistant, food-safe materials guarantee long-lasting, odor-free performance.
- • **Perfect for On-the-Go Homebrewing:** Ideal for tailgates, BBQs, and camping—re-carbonate and clean with minimal CO₂ waste.

## Overview

The MRbrew Stainless Steel Carbonation Cap is a high-performance, airtight bottle cap designed for 2L PET bottles, capable of withstanding up to 60 PSI. Made from premium 304 stainless steel with food-grade seals, it features universal ball lock compatibility and a secure fit, making it perfect for homebrewers seeking reliable carbonation, easy cleaning, and portable convenience.

## Description

Full description not available

## Features

- ✅ Withstands 60 PSI : Built for high performance, the MRbrew carbonation cap holds up to 60 PSI without leaking. This cap features a large flat gasket and upgraded O-ring for a completely airtight seal—ensuring your beer stays fresh and carbonated overnight. Ideal for force carbonation and bottle conditioning.
- ⚙️ Universal Ball Lock Compatibility: Designed for versatility, the integrated keg post connects easily with both gas and liquid ball lock disconnects. The removable 5/16” beer barb supports both carbonation and liquid transfers—perfect for homebrew cleaning systems too. All parts are pre-assembled and secure, so there's no risk of accidental disassembly.
- 🧊Snug Fit for Standard 2L Soda Bottles: Featuring precise 1-1/8-8UN threading, this carbonation cap screws onto most 2-liter PET soda bottles securely and smoothly. Creates a leak-proof seal without excessive torque, making it an excellent tool for homebrewers who want to keep beverages carbonated longer and fresher.
- 🛡Premium 304 Stainless Steel & Food-Grade Seals: Crafted from high-quality 304 stainless steel, food-safe rubber, and silicone, this carbonation cap ensures long-lasting performance without rust, odors, or sharp edges. All sealing gaskets are perfectly fitted and stay in place during use, keeping your drinks clean and safe.
- 🍻Perfect for Homebrew: Re-carbonate soda, beer, or cold brew on the go—ideal for BBQs, tailgates, camping, or holiday parties. Also works great for running cleaner through beer lines using a small bottle setup, minimizing CO₂ waste compared to cleaning with a full keg. A must-have for every mobile homebrewer.

## Images

![MRbrew Stainless Steel Carbonation Cap, 2 PCS Ball Lock Keg Post 5/16'' Beer Line Nipple Barb & CO2 Coupling for Soda Drink, PET Bottles Counter Pressure Bottle Filling Cap with Gasket &O-Rings - Image 1](https://m.media-amazon.com/images/I/61oO4aSsRXL.jpg)
![MRbrew Stainless Steel Carbonation Cap, 2 PCS Ball Lock Keg Post 5/16'' Beer Line Nipple Barb & CO2 Coupling for Soda Drink, PET Bottles Counter Pressure Bottle Filling Cap with Gasket &O-Rings - Image 2](https://m.media-amazon.com/images/I/61QSkxu8FAL.jpg)
![MRbrew Stainless Steel Carbonation Cap, 2 PCS Ball Lock Keg Post 5/16'' Beer Line Nipple Barb & CO2 Coupling for Soda Drink, PET Bottles Counter Pressure Bottle Filling Cap with Gasket &O-Rings - Image 3](https://m.media-amazon.com/images/I/61WNYP5g5sL.jpg)
![MRbrew Stainless Steel Carbonation Cap, 2 PCS Ball Lock Keg Post 5/16'' Beer Line Nipple Barb & CO2 Coupling for Soda Drink, PET Bottles Counter Pressure Bottle Filling Cap with Gasket &O-Rings - Image 4](https://m.media-amazon.com/images/I/61oNWuzo7sL.jpg)
![MRbrew Stainless Steel Carbonation Cap, 2 PCS Ball Lock Keg Post 5/16'' Beer Line Nipple Barb & CO2 Coupling for Soda Drink, PET Bottles Counter Pressure Bottle Filling Cap with Gasket &O-Rings - Image 5](https://m.media-amazon.com/images/I/61syV7sV4rL.jpg)

## Available Options

This product comes in different **Size** options.

## Questions & Answers

**Q: This product comes with spare O-rings, but there is also a rubber washer that seals the carbonation cap to the bottle. Are spares for this available?**
A: Thank you for your question, I am sorry that we have not provided additional gaskets yet for the MRbrew Carbobation cap, we will consider your request, please pay attention to the latest developments of MRbrew.

**Q: What size threds are on this cap. Looking to find glass bottles for them to fit on.**
A: i would not recomend use it on glass bottle, they might blow, but any Wired bottle that fits regular coca cola cap will work for this

**Q: how can I clean it up, can I immerse it in boiling water?**
A: Soak it in star san or pbh

**Q: Will this work with fermzilla?**
A: This cap fits standard soda bottles(12 Oz to 2.5L)  so if your threads are compatible with a 2 liter cap this will work.

## Frequently Bought Together

- MRbrew Stainless Steel Carbonation Cap, 2 PCS Ball Lock Keg Post 5/16'' Beer Line Nipple Barb & CO2 Coupling for Soda Drink, PET Bottles Counter Pressure Bottle Filling Cap with Gasket &O-Rings
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*Product available on Desertcart Netherlands*
*Store origin: NL*
*Last updated: 2026-01-30*