Natural cork, refined
Made from a single piece of natural cork, preserving the material, character and ritual wine deserves.
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Natural wine cork supplier · Portugal · Since 2009
The natural cork,
made smarter.
Slimcork® natural wine corks, made in Portugal by Reliable Cork Solutions. Single-piece cork with individual treatment, for still wines. Plain or personalised 44 × 24 mm corks from 1,000 units.
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
Natural cork quality and value for still wines, supported by published laboratory results and bottling trials up to 12 months.
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 registered brand of single-piece natural cork stoppers developed by Reliable Cork Solutions. Each cork receives individual treatment using a cork-treatment device covered by European patent EP3331678 B1.
Which wines is Slimcork® designed for?+
Slimcork® is designed for still wines, not sparkling wines. Confirm bottle compatibility and the supplied specification with our team. Published bottling trials cover up to 12 months and do not establish multi-year ageing performance.
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 your bottle specification, quantity and delivery country. Request plain or personalised Slimcork from 1,000 corks for your next bottling run.
