--- product_id: 602984898 title: "MRbrew Plastic Carbonation Cap, 2 PCS Ball Lock Keg Post 5/16'' Beer Line Nipple Barb Homebrew Kegging Soft Soda Drink PET Bottles Counter Pressure Bottle Filling Cap with Spare Sealing Gasket O-rings" price: "59 zł" currency: PLN in_stock: true reviews_count: 8 url: https://www.desertcart.pl/products/602984898-mrbrew-plastic-carbonation-cap-2-pcs-ball-lock-keg-post store_origin: PL region: Poland --- # 60 PSI pressure rating Universal 5/16'' ball lock keg post Leak-proof sealing gasket MRbrew Plastic Carbonation Cap, 2 PCS Ball Lock Keg Post 5/16'' Beer Line Nipple Barb Homebrew Kegging Soft Soda Drink PET Bottles Counter Pressure Bottle Filling Cap with Spare Sealing Gasket O-rings **Price:** 59 zł **Availability:** ✅ In Stock ## Summary > 🍺 Elevate your homebrew game with airtight, hassle-free carbonation! ## Quick Answers - **What is this?** MRbrew Plastic Carbonation Cap, 2 PCS Ball Lock Keg Post 5/16'' Beer Line Nipple Barb Homebrew Kegging Soft Soda Drink PET Bottles Counter Pressure Bottle Filling Cap with Spare Sealing Gasket O-rings - **How much does it cost?** 59 zł with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.pl](https://www.desertcart.pl/products/602984898-mrbrew-plastic-carbonation-cap-2-pcs-ball-lock-keg-post) ## Best For - Customers looking for quality international products ## Why This Product - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Next-Level Leak Protection:** Upgraded flat gasket and sealing O-rings ensure airtight, no-fuss carbonation. - • **Portable Party-Ready Design:** Ideal for on-the-go carbonation—beach, BBQ, or backyard, your brew stays fresh and fizzy. - • **Versatile Ball Lock Keg Post:** Seamlessly connect gas or liquid lines for effortless carbonation and cleaning. - • **Rock-Solid 60 PSI Carbonation:** Keep your brews perfectly fizzy overnight without a single leak. - • **Precision Fit for Standard PET Bottles:** Screws on smoothly with a secure seal—no over-tightening needed. ## Overview The MRbrew Plastic Carbonation Cap is a durable, leak-proof accessory designed for homebrewers using standard 2L PET bottles. Featuring a robust 60 PSI pressure tolerance, upgraded sealing gaskets, and a versatile 5/16'' ball lock keg post, it ensures airtight carbonation and easy connection to gas or liquid lines. Perfect for quick carbonation, portable serving, and efficient cleaning, this cap transforms your homebrewing experience with professional-grade reliability. ## Description Shop MRbrew at the desertcart Home Brewing & Wine Making store. Free Shipping on eligible items. Everyday low prices, save up to 50%. Review: As Advertised! - The Plastic Carbonation Cap with Ball Lock Keg Post works perfectly for quick carbonation and pressure transfers. It fits tightly, seals well, and is compatible with standard PET bottles Review: Perfect - Works great. Plastic not too soft and wears well. Screw on tight. Based on how well these worked I upgraded to a Soda Stream. Would buy again ## Features - Withstand 60-PSI Carbonation Pressure, Complete No Leaking Sealing O-Ring Design and Huge Upgrade From Old Plastic Version: MRbrew carbonation cap comes with necessary brewing sealing o-rings and washer replacemets to prevent leaks, there is a big flat gasket inside this carbonation cap compared to the old version plastic bottle filling cap, can run your carbonator at 60 psi pressure and hold pressure overnight, beer will not go flat, make a airtight seal and good fit for force carbonation. - Sealing Gasket is Not Easy to Fall Out and Include 5/16 Barb Fitting Spare O-ring: the inside rubber sealing gasket features a right size for being placed tightly inside carbonating cap, which will stay in on its own when unscrewing off bottle filling cap, also provide 5/16'' beer nipple barb sealing o-ring replacements even such o-ring is screwed inside getting well protected. unlike other polished finish carbonation caps, you can grip this plastic carbonation cap easily when removing. - Unique Carbonation Cap Keg Post is Perfect for Ball Lock System and Removable Beer Barb: carbonation cap features a unique keg post that has versatility and ease of use, can connect to both gas and liquid disconnects easily, beer 5/16'' hose barb not only enables carbonation cap to carbonate, but to be used for liquid connections and for cleaning as well. made of healthy plastic, no odors, no burrs or unfinished machining anywhere, will not bring strange smell to the carbonation drinks. - Screws onto Standard 2L Soda Bottles Very Securely: this soda drink bottle filling cap features a great accuracy 1-1/8-8UN female thread that can be comparable to the thread of stainless carbonation cap, merge with the plastic PET bottle threads very smoothly, seals the bottles well without needing much torque, screws on and off of bottles easily creating a perfect tight seal every time, excellent tool if you are making homebrewing and kegging. - Perfect for Various Brewing Occasions and Reduce CO2 Loss when Do Brewing Cleaning: carbonation cap is a cool way to re-carbonate beverage quickly, no foaming, great alternative for growlers, allows you to serve portable home brew beer, soda water, iced tea on barbecue, beach, lake or holiday parties, other outdoor activities, brings big convenience to mobile kegging. also can run the cleaner through beer lines from a small soda bottle preventing a larger keg from wasting more co2. ## Technical Specifications | Specification | Value | |---------------|-------| | Customer Reviews | 4.5 out of 5 stars 121 Reviews | ## Images ![MRbrew Plastic Carbonation Cap, 2 PCS Ball Lock Keg Post 5/16'' Beer Line Nipple Barb Homebrew Kegging Soft Soda Drink PET Bottles Counter Pressure Bottle Filling Cap with Spare Sealing Gasket O-rings - Image 1](https://m.media-amazon.com/images/I/61HoIdLMwsL.jpg) ## Available Options This product comes in different **Style** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ As Advertised! *by F***S on October 2, 2025* The Plastic Carbonation Cap with Ball Lock Keg Post works perfectly for quick carbonation and pressure transfers. It fits tightly, seals well, and is compatible with standard PET bottles ### ⭐⭐⭐⭐⭐ Perfect *by G***L on April 10, 2025* Works great. Plastic not too soft and wears well. Screw on tight. Based on how well these worked I upgraded to a Soda Stream. Would buy again ### ⭐⭐⭐⭐ Great but alittle small issue. *by A***R on November 21, 2025* They are pretty good but the inside part can sometimes get lose so be mindful to check everyone and while to screen the spring tight. ## Frequently Bought Together - MRbrew Plastic Carbonation Cap, 2 PCS Ball Lock Keg Post 5/16'' Beer Line Nipple Barb Homebrew Kegging Soft Soda Drink PET Bottles Counter Pressure Bottle Filling Cap with Spare Sealing Gasket O-rings - 304 Stainless Home Brew Beer FermZilla Ball Floating Beer Keg Liquid Dip Tube with Floating Dip Tube Filter and 80CM Silicone Dip Tube - Home Brew & Wine Making - Pack Of 80 Carbonation Drops --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.pl/products/602984898-mrbrew-plastic-carbonation-cap-2-pcs-ball-lock-keg-post](https://www.desertcart.pl/products/602984898-mrbrew-plastic-carbonation-cap-2-pcs-ball-lock-keg-post) --- *Product available on Desertcart Poland* *Store origin: PL* *Last updated: 2026-04-23*