Keystone Bungs
Simple & Reliable - Designed to Reseal with Ease
UB Plastics’ keystone bungs are designed to pair perfectly with our keystones, providing brewers with an efficient and practical solution for resealing casks after tapping. They offer a dependable alternative to traditional cork bungs.
Each bung is designed for one-piece extraction alongside the keystone, reducing handling time and simplifying post-use cask processing. Produced at our Burton-upon-Trent site using high-volume tooling, they deliver consistent fit and performance, ideal for breweries of all sizes.
Key Features
- Designed for post-tap resealing of cask ale systems
- One-piece removal with keystone
- Consistent fit for reliable performance
- Fully recyclable
- Packed in bags of 5,000 units
Full Product Information
Sizes & Compatibility
UB Plastics’ keystone bungs are designed to work in conjunction with our standard and tutt-style keystones. They fit securely into the central cavity and can be extracted together as a single unit, making them a practical solution for cask return and cleaning processes.
Compatibility:
- Suitable for use with UB Plastics standard and tutt keystones
- Designed for standard cask ale systems
- Fits securely without adhesives or secondary sealing materials
Application:
- Manual press-fit installation
- Removal with keystone during cask cleaning or recycling
Packaging & Sustainability
Our keystone bungs are injection moulded using virgin materials and efficient tooling that helps minimise waste. They’re supplied in durable sacks for easy handling, transport and storage.
Pack Quantity:
- 5,000 units per bag
Sustainability Notes:
- Made from virgin thermoplastic material
- Produced using efficient tooling and minimal-waste manufacturing
- Ideal for breweries aiming to improve environmental impact
Why Choose UB Plastics for your Tamper Evident Caps?
With decades of experience serving the brewing industry, UB Plastics is a trusted supplier of high-quality cask components. Our keystone bungs are manufactured to tight tolerances using reliable materials, ensuring they work effectively across thousands of uses. Combined with short lead times and practical packaging, they’re a smart choice for brewers prioritising efficiency and sustainability.
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