Natural cork, refined
Made from a single piece of natural cork, preserving the material, character and ritual wine deserves.
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Portuguese cork expertise · Since 2009
The natural cork,
made smarter.
Meet Slimcork® — our patented natural cork stopper, created to deliver excellent sealing, a beautifully uniform finish and remarkable value.
7th generation
cork family5 continents
supplied100% Portuguese
expertise
cork family5 continents
supplied100% Portuguese
expertise
The Slimcork® difference
One piece of natural cork.
One patented idea.
Slimcork® starts with a single natural cork stopper. Its pores are mechanically filled using a specially developed component, creating a smooth, homogeneous closure while retaining the qualities of natural cork.
Reliable sealing
A patented pore-filling process creates a more uniform surface and supports consistent sealing performance.
Smarter value
Designed for medium and long-term ageing with an exceptional balance between natural quality and cost.
A natural closure.
FROM FOREST TO BOTTLE
Built for the wine inside
We understand cork.
We also understand wine.
Our own vineyard and winery experience in Portugal’s Douro region gives us first-hand knowledge of bottling, storage and the real demands placed on every closure.
amazon Official Slimcork® selection
From our cork forest
to your cellar.
Choose your pack and complete your purchase securely on Amazon. Every cork is made in Portugal and ready to use — no boiling or soaking required.
Natural cork, ready to use.Made in Portugal
Amazon availability and pricing may vary. For personalised printing, samples or trade quantities, contact us directly on WhatsApp.
The people behind Slimcork®
Seven generations.
One new idea.
Reliable Cork Solutions is a Portuguese, family-owned cork company. Since 2009, we have combined generations of know-how with direct, individual support for wineries and distributors worldwide.
Slimcork® is the result of that heritage: natural cork knowledge transformed into a patented closure with reliable performance and genuine value.
Talk to our team ↗Patented technology
European patent granted.
The cork-treatment device behind Slimcork® is covered by European patent EP3331678 B1, held by Reliable Cork Solutions, Unip. Lda. The grant was published on 8 November 2023.
International application publication: WO2017021866 A1 · 9 February 2017.
View granted European patent (PDF) ↗Technical library
Evidence you can
examine.
Explore concise, public technical summaries for Slimcork® covering product validation, torsional performance and food-contact safety. Each document defines the tested configuration, methods, results and limitations.
Read Slimcork technical data online ↗
01 · Product validation
Technical Product Dossier
Comparative bottling trials and monitoring up to 12 months for Slimcork® 45 × 24 mm, Light finish.
Open PDF ↗ 02 · Mechanical performanceComparative Torsional Performance
Torsional moment, rupture angle and shear stress across four 44 × 24 mm closure groups.
Open PDF ↗ 03 · Food-contact testingFood-Contact Safety & Compliance
Overall migration, microbiology, silicone migration and chemical findings from CTCOR Report 2210/24 (E).
Open PDF ↗Public technical summaries in English. Results apply only to the tested samples and configurations described in each document.
Amazon customer reviews
Bottled with care.
Loved by customers.
★★★★★
“Excellent, very solid corks.”★★★★★
“High quality, slightly pricey, worth it.”★★★★★
“These corks are tough and long lasting.”
* Rating and review count observed on Amazon.com. Figures may vary by marketplace. Review excerpts are linked to their Amazon listings.
Frequently asked questions
Clear answers,
naturally.
What is Slimcork®?+
Slimcork® is a patented and registered natural cork stopper developed by Reliable Cork Solutions. It is made from one piece of natural cork whose pores are mechanically filled with a specially developed component.
Which wines is Slimcork® designed for?+
It is designed to seal and protect wines intended for medium and long periods of cellar ageing.
Where is Slimcork® manufactured?+
Slimcork® is developed and manufactured in Portugal by Reliable Cork Solutions, a family-owned cork specialist based in Fiães.
Where can I buy Slimcork®?+
Slimcork® is available on Amazon in packs of 50, 100, 250 and 1,000 corks. Wineries and distributors can contact us directly for samples, custom printing and larger quantities.
Your wine. The right cork.
Ready to test
Slimcork®?
Tell us about your wine, bottle and annual volume. We will recommend the right specification and arrange samples for your team.
