---
product_id: 34097635
title: "Ferroday Stainless Steel Carbonation Cap Forced Carbonation PET Bottle Filling 5/16 Barb CO2 Coupling to Carbonate Soda Beer Stainless Steel PET Bottle Carbonation Cap + O-ring + Gasket"
brand: "ferroday"
price: "¥3708"
currency: JPY
in_stock: true
reviews_count: 4
category: "Ferroday"
url: https://www.desertcart.jp/products/34097635-ferroday-stainless-steel-carbonation-cap-forced-carbonation-pet-bottle-filling
store_origin: JP
region: Japan
---

# Food-safe gasket & O-ring for leak-proof carbonation Fits most PET bottles with 5/16 barb CO2 coupling Heavy-duty stainless steel, rust & corrosion-proof Ferroday Stainless Steel Carbonation Cap Forced Carbonation PET Bottle Filling 5/16 Barb CO2 Coupling to Carbonate Soda Beer Stainless Steel PET Bottle Carbonation Cap + O-ring + Gasket

**Brand:** ferroday
**Price:** ¥3708
**Availability:** ✅ In Stock

## Summary

> 🍺 Elevate your homebrew game with pro-grade carbonation precision!

## Quick Answers

- **What is this?** Ferroday Stainless Steel Carbonation Cap Forced Carbonation PET Bottle Filling 5/16 Barb CO2 Coupling to Carbonate Soda Beer Stainless Steel PET Bottle Carbonation Cap + O-ring + Gasket by ferroday
- **How much does it cost?** ¥3708 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/34097635-ferroday-stainless-steel-carbonation-cap-forced-carbonation-pet-bottle-filling)

## Best For

- ferroday enthusiasts

## Why This Product

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

## Key Features

- • **Effortless Carbonation Setup:** Quickly attach to standard PET bottles and ball-lock gas disconnects for seamless forced carbonation.
- • **Versatile Homebrew Essential:** Perfect for carbonating soda, beer, water, and juice—plus ideal for cleaning beverage lines.
- • **Leak-Proof Seal, Zero Worries:** High-resilience food-safe rubber gaskets and O-rings ensure airtight, no-leak connections every time.
- • **Built to Last, Brew After Brew:** Premium stainless steel resists rust and corrosion for long-term durability.
- • **Bonus Replacement Parts Included:** Comes with extra O-rings and gasket so you’re always ready to maintain peak performance.

## Overview

The Ferroday Stainless Steel Carbonation Cap is a robust, corrosion-resistant accessory designed for forced carbonation of homemade beverages in PET bottles. Featuring a food-safe gasket and O-ring for leak-proof sealing, it fits most standard soft drink bottles and includes extra replacement parts. Ideal for homebrewers seeking reliable, easy-to-use carbonation and cleaning solutions.

## Description

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

Review: Great, works even better with some upgrades - When we got the carbonation lid for our corny keg, we were trying to figure out a way to provide carbonated water during the 2 days it would take to charge a fresh keg, and found these (same brand). The idea of being able to take a bog standard 2 liter bottle and charge carbonated water in it was, TBH, mind blowing, so I decided to give it a try, in the hopes it would give us a backstop while the keg recharged. The cap itself is cut on the sides allowing you to use a keg spanner to tighten it up, a really useful feature for us with physical disabilities that make grip an issue. It works so well! One thing that we did though was to get some liquid tubing, and a pair of micro porous stones (Ferroday again). We hooked the tube and stone up, in the hopes we could get the micro porous stone speed, and easier to store standing up while it charged. It works well in both cases. So for 3, 4 hours of charging, at 35psi, we get a 2 liter bottle of carbonated water. Any short of a time doesn't seem to work, but I don't know if this is a limitation of the carbonation cap or operator error, as I've seen YouTube videos that claim less than an hour to charge a bottle. I'd recommend this, both for charging a 2 liter bottle before going out, or as we're using it, to make sure we have standby fluids. If you're using this alone, rather than with the upgrades I mentioned, remember to lay the bottle on its side in the fridge for the tube to be inside the liquid.
Review: this replaced the original carbacap - I have had an original carbacap that I have been using for quite literally for 15ish years. They were made of nylon and work really really well, annoyingly I dropped the water bottle after it was carbonated with the cap still in place and the pressure bump from the drop (I carbonate to about 70#) was enough to make it start leaking co2. They havent been available for years and I saw the many good reviews for this and gave it a try, honestly I was pretty skeptical. I have tried a number of different caps over the years and have never found anything that works as well and that old one. They were bought out a number of years ago and the newer versions arent as good being made from a plastic resin, the original company name was liquid bread, if you ever spot one somewhere snap it up. I was delighted to find this has worked really well so far, Ive only carbonated a few times with it and Ill edit this if that changes but Im very happy with it so far. The only criticism I have is the outside shape, the round outside makes it slippery and not easy to get on and off, but that wont stop me from using it. Ill just be occasionally annoyed when I do, but Im easily annoyed anyway...lol

## Features

- Heavy Duty Stainless Carbonation Cap: High quality stainless steel carbonation cap, well made for rust resistance and corrosion-proof. Would last for a long time in good condition. A must have equipment for homebrew Carbonation
- Great for Homebrew Carbonation/ Cleaning: This ball lock carbonation cap is most used for homemade beverage carbonation, and meanwhile it is great for cleaning beer/ soda/ water/ juice lines. Easy to set up
- Easy Forced Carbonation Drinks: Ideal for forced carbonation drinks in PET bottles. Fit for most soft drink PET bottles. Just simply attach this cap with a PET bottle and a ball-lock gas disconnect to send CO2 into the bottle for beverage carbonation. Your homemade drinks will be right ready for drinking
- Food Safe Gasket/ No Leaks: We use premium material for the gaskets and o-rings. High-resilient food safe rubber gaskets seal against the threads and give you no leak connections! We updated our package with 2 more O-rings and 1 more gasket for replacement
- No Regrets Purchase: Stainless steel made carbonation cap weighs about 3.6oz. If any leaks, please change the O-ring or Gasket with the extra ones. We are committed to offering you high-quality products as well as superior service! Please let us know if there are any problems with this Stainless Steel Carbonation Cap, we will try our best to serve you. Provide technical support

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B01K4GGYT0 |
| Best Sellers Rank | #38,623 in Kitchen & Dining ( See Top 100 in Kitchen & Dining ) #11 in Beer Brewing Kegs & Kegging |
| Bottle Type | Standard Bottle or Slim Neck Bottle |
| Brand | Ferroday |
| Capacity | 3.5 ounces |
| Color | silver |
| Customer Reviews | 4.6 4.6 out of 5 stars (863) |
| Date First Available | October 25, 2016 |
| Finish Type | Stainless steel |
| Is Discontinued By Manufacturer | No |
| Item Weight | 3.52 ounces |
| Item model number | Cc0010 |
| Manufacturer | FERRODAY |
| Material | Stainless Steel |
| Number of Items | 1 |
| Number of Packs | 1 |
| Package Dimensions | 4.25 x 2.99 x 1.26 inches |
| Package Information | PET Bottle |
| Product Care Instructions | Hand Wash Only |
| Recommended Uses For Product | Juices |
| Reusability | Reusable |
| Shape | Round |
| Special Feature | Leak Proof |
| UPC | 753210863155 |
| Unit Count | 1.0 Count |

## Product Details

- **Bottle Type:** Standard Bottle or Slim Neck Bottle
- **Brand:** Ferroday
- **Capacity:** 3.5 ounces
- **Color:** silver
- **Material:** Stainless Steel

## Images

![Ferroday Stainless Steel Carbonation Cap Forced Carbonation PET Bottle Filling 5/16 Barb CO2 Coupling to Carbonate Soda Beer Stainless Steel PET Bottle Carbonation Cap + O-ring + Gasket - Image 1](https://m.media-amazon.com/images/I/41lFeuptWhL.jpg)
![Ferroday Stainless Steel Carbonation Cap Forced Carbonation PET Bottle Filling 5/16 Barb CO2 Coupling to Carbonate Soda Beer Stainless Steel PET Bottle Carbonation Cap + O-ring + Gasket - Image 2](https://m.media-amazon.com/images/I/61yz8f8y-5L.jpg)
![Ferroday Stainless Steel Carbonation Cap Forced Carbonation PET Bottle Filling 5/16 Barb CO2 Coupling to Carbonate Soda Beer Stainless Steel PET Bottle Carbonation Cap + O-ring + Gasket - Image 3](https://m.media-amazon.com/images/I/61+XhpQzm0L.jpg)
![Ferroday Stainless Steel Carbonation Cap Forced Carbonation PET Bottle Filling 5/16 Barb CO2 Coupling to Carbonate Soda Beer Stainless Steel PET Bottle Carbonation Cap + O-ring + Gasket - Image 4](https://m.media-amazon.com/images/I/51fLfk1rHSL.jpg)
![Ferroday Stainless Steel Carbonation Cap Forced Carbonation PET Bottle Filling 5/16 Barb CO2 Coupling to Carbonate Soda Beer Stainless Steel PET Bottle Carbonation Cap + O-ring + Gasket - Image 5](https://m.media-amazon.com/images/I/51pMvYJpgwL.jpg)

## Available Options

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

## Questions & Answers

**Q: Does it work with glass water bottles (such as pellegrino bottles)?  Thanks.**
A: NO! Don't ever try to force carbonation into a glass bottle, unless you want to be blasted with shrapnel from the bottle when it explodes! These are for plastic PET bottles only.

**Q: What size is the big flat o ring on the inside? I need a replacement for my carbonator cap.**
A: Hello,the size of the big O-ring inside are 26mm(outside diameter),18mm(inner diameter),4mm(line diameter).Thank you !

**Q: I've just got one of these, and it leaks when connected to a normal pet bottle. is this what the o-ring is for? or do i have a deffective unit?**
A: Make sure the inner metal piece..the one with the hose Barb..is tight. It screws into the main part of the cap. Also that large washer is key to getting a good seal on the bottle. Mine gets screwed down so tight that when I remove the cap it's inside the mouth of the pet bottle.

**Q: will this take both liquid and gas assemblies?**
A: Yes, you can use the liquid or gas assemblies ( liquid ball lock or gas ball lock)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great, works even better with some upgrades
*by D***A on May 30, 2024*

When we got the carbonation lid for our corny keg, we were trying to figure out a way to provide carbonated water during the 2 days it would take to charge a fresh keg, and found these (same brand). The idea of being able to take a bog standard 2 liter bottle and charge carbonated water in it was, TBH, mind blowing, so I decided to give it a try, in the hopes it would give us a backstop while the keg recharged. The cap itself is cut on the sides allowing you to use a keg spanner to tighten it up, a really useful feature for us with physical disabilities that make grip an issue. It works so well! One thing that we did though was to get some liquid tubing, and a pair of micro porous stones (Ferroday again). We hooked the tube and stone up, in the hopes we could get the micro porous stone speed, and easier to store standing up while it charged. It works well in both cases. So for 3, 4 hours of charging, at 35psi, we get a 2 liter bottle of carbonated water. Any short of a time doesn't seem to work, but I don't know if this is a limitation of the carbonation cap or operator error, as I've seen YouTube videos that claim less than an hour to charge a bottle. I'd recommend this, both for charging a 2 liter bottle before going out, or as we're using it, to make sure we have standby fluids. If you're using this alone, rather than with the upgrades I mentioned, remember to lay the bottle on its side in the fridge for the tube to be inside the liquid.

### ⭐⭐⭐⭐⭐ this replaced the original carbacap
*by B***N on July 10, 2024*

I have had an original carbacap that I have been using for quite literally for 15ish years. They were made of nylon and work really really well, annoyingly I dropped the water bottle after it was carbonated with the cap still in place and the pressure bump from the drop (I carbonate to about 70#) was enough to make it start leaking co2. They havent been available for years and I saw the many good reviews for this and gave it a try, honestly I was pretty skeptical. I have tried a number of different caps over the years and have never found anything that works as well and that old one. They were bought out a number of years ago and the newer versions arent as good being made from a plastic resin, the original company name was liquid bread, if you ever spot one somewhere snap it up. I was delighted to find this has worked really well so far, Ive only carbonated a few times with it and Ill edit this if that changes but Im very happy with it so far. The only criticism I have is the outside shape, the round outside makes it slippery and not easy to get on and off, but that wont stop me from using it. Ill just be occasionally annoyed when I do, but Im easily annoyed anyway...lol

### ⭐⭐⭐⭐⭐ Perfect!
*by W***D on July 6, 2024*

My local home brew store could not provide me with one of these that worked. It was plastic trash that would not work with the ball lock they set me up with. I thought maybe it was a defect and returned to see if I could get a refund or exchange, and they couldn’t get it to work either, and a new one also would not work. This one is well-built, looks good, fits on standard bottles, has no leakage, and costs less than the name brand, plastic junk.

## Frequently Bought Together

- FERRODAY Stainless Steel Carbonation Cap Forced Carbonation PET Bottle Filling 5/16 Barb CO2 Coupling to Carbonate Soda Beer Stainless Steel PET Bottle Carbonation Cap + O-ring + Gasket
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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-03-20*