Cork Products Specialist
If you need to know what cork size fits something, then we have the answer.
Cork products specialist since 2010
What size
do I need?
The UK's largest specialist range of food-safe cork, imported direct from Portugal. 64 sizes of cork stoppers and 10 sizes of cork balls held in stock, with no minimum order and same-day dispatch before 1pm.
Buying in volume? Apply for a trade account
Shop by range
Every cork is food safe, made from natural or agglomerated cork and imported directly from Portugal.
Cork stoppers & lids
Tapered natural and agglomerated corks for bottles, jars and home brewing.
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Small cork sizes
From 4mm diameter, for vials, test tubes and perfume bottles.
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Terrariums & large jars
Wide lids and bungs up to 210mm, for terrariums, sweet jars and demijohns.
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Cork balls
Solid natural cork spheres from 20mm to 80mm diameter.
View rangeGetting the size right
Measure the inside of the neck, not the outside
Cork sizes are quoted as top diameter × bottom diameter × length. You want the bottom diameter to be a little wider than the opening you are sealing, so the cork grips as it compresses. If you are between two sizes, go up.
Why buy from Just Cork
Food safe throughout
Every cork we sell is certified food safe, whether natural or agglomerated.
Imported direct from Portugal
Sourced from the world's largest cork oak growers, with no middleman.
Dispatched the same day
Orders placed before 1pm leave us that afternoon, one cork or one thousand.
Shipped worldwide
Regular exports across Europe and to the USA, Canada, Australia and New Zealand.
The material
Harvested without felling a single tree
Cork is stripped from the bark of the cork oak, never the trunk itself. The tree is left standing and the bark regrows over the following nine years, ready to be harvested again. A single oak can be worked this way for two centuries.
It is why cork is vegan, biodegradable, recyclable and genuinely renewable — and why it has sealed bottles for four hundred years without needing improving on.
Trade & wholesale
Buying in volume?
We supply distilleries, potteries, laboratories, candle makers and gift producers across the UK, with wholesale pricing and bespoke sizes to order.