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Casks - 9 Gal Firkins and 4.5 Gal Pins

The world's best selling plastic casks are a robust, lightweight and economical alternative to traditional stainless steel casks and are cleverly designed to be stackable. The use of plastic also translates to very a significant reduction in noise levels versus steel casks, from typical handling activities.

Why Brewing with Plastic Casks is better .... ?

The World’s Best Selling Plastic Casks For Real Ale

Brewery Plastics Ltd. (formerly CypherCo Ltd) have been building plastic casks since 2003, and have supplied more plastic casks than any other company in the world.

Real Life Cost

As little as 1/3rd the price of stainless steel and a much reduced occurance of casks being stolen

No Taste Difference

Independent tests prove there is no taste difference between our plastic casks and stainless casks; our plastic casks work as fantastic oxygen permeability barriers

40% Lighter than stainless steel equivalent

Save money on shipping costs, increasing vehicle payloads and making cask handling easier; all whilst being better for the environment

Low Risk of Theft

Greatly reduce the risk of theft. No scrap value 

Choose your own colours

Make cask repatriation simple and increase your brand awareness. 3 colour combination gives numerous denominations.

Ownership Identification

External wear resistant laser marking

Patented Construction

Liquid shell uses the poly-tech 50 weld process. This is a patented process, unique to Brewery Plastics Ltd.


Casks stack seamlessly with each other, without the requirement for pallets!

Made in UK

Can be collected or despatched from our manufacturing facility in Droitwich, Worcestershire, UK. Also available via our operations in the USA.

Standard fittings

Use industry standard fitting method for keystones & shives, no need to use special expensive fittings or tooling

Same height & width as most metal casks

Slot our plastic casks seamlessly into existing metal cask population

No Denting/Volume Loss

No risk of dents reducing internal volume over time