Description
xUpgrade your home carbonation with MRbrew
The MRbrew Plastic Carbonation Cap is a practical upgrade for hobby brewers and DIY beverage enthusiasts. Designed to withstand up to 60 psi, it helps maintain fizz by delivering an airtight seal. The upgraded flat gasket and sealing O rings reduce leaks, so you can carbonate and store beverages with confidence.
Inside the cap, a rubber sealing gasket is thoughtfully sized to stay in place as you unscrew the cap. The kit includes spare 5/16 inch barb O rings, so replacements are handy when needed. The cap is easy to grip and remove, even with wet hands or after cleaning, making daily use smoother.
Versatile and practical for many setups
The unique keg post makes it compatible with Ball Lock systems and removable beer barbs. The 5/16 inch hose barb expands its uses beyond carbonation, supporting liquid connections and even cleaning tasks. Made from healthy plastic with no odors or burrs, it won’t introduce unfamiliar smells to your beverages.
Secure fit on standard bottles
With a precise 1-1/8-8UN female thread, this cap threads onto standard 2 L PET bottles smoothly and seals with minimal effort. It’s a handy tool for both homebrewing and kegging workflows.
Outdoor-friendly and cleaning-friendly
Perfect for barbecues, beaches, camping trips, or any outdoor gathering, the cap enables quick re-carbonation and ready-to-serve drinks on the go. It can also help minimize CO2 loss when flushing or cleaning beverage lines, making gas use more efficient.
- Withstand 60 psi carbonation pressure for consistent fizz
- Airtight sealing O ring design and a larger flat gasket
- Keg post compatibility and 5/16 barb for versatile connections
- Secure fit on standard 2 L PET bottles
- Portable for outdoor events and quick re-carbonation
- Includes spare 5/16 barb O rings for easy replacements
- Healthy plastic construction with no odors or burrs
- Gasket stays in place when removing the cap
- Easy to clean and compatible with line cleaning workflows
- Supports Ball Lock systems and removable beer barb connections
FAQ
Q: What bottles does this cap fit?
A: It screws onto standard 2 L PET bottles using a 1-1/8-8UN thread, creating a tight, reliable seal.
Q: Can I use this cap for outdoor parties or mobile setups?
A: Yes, it enables on-the-go carbonation and serving, making portable beverages easier at barbecues, beaches, or trips.
Shipping & Return
xReturns Policy
You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).
You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).
If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.
Shipping
We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.
When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.
Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.
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