Cork
Every Cork We Ship
Carries a Guarantee.
Here's Which One Yours Needs.
TCA screening. Compression recovery. Moisture migration rates. Named tolerances, batch certificates, and the test data to back every claim.
TCA Screened to 0.5 Parts Per Trillion. Every Bale.
Our NDtech gas chromatography line tests each individual stopper in seconds — not batch samples, not statistical inference. Before any washing process begins, every bale of 10,000 corks is screened by GC/MS. Over 99% of stoppers leave our floor with less than 1 ng/L releasable TCA. Half carry less than 0.5 ng/L. The guarantee is in the data, not the marketing copy.
Compression Recovery Within ±2%. At −80°C and 140°C Both.
Cork's near-zero Poisson's ratio means the stopper radius barely changes under axial load — critical for aerospace vibration-dampening gaskets where dimensional creep is a failure mode. Our composite cork-nitrile and cork-silicone sheets are tested across the full operating envelope. Every sheet grade ships with a compression recovery certificate. Specify the load cycle, we'll match the grade.
Moisture Migration Below 0.5 mg Per Stopper. Batch Certified.
Suberin — the fatty acid matrix in cork's cell walls — is what makes cork permanently impermeable. Not a coating. Not a treatment. The material itself. Our composite rolls for flooring distribution are graded to consistent density tolerances of ±3 kg/m³ across the full roll width. Every batch ships with a moisture migration certificate. Distributors get the same documentation their downstream contractors will ask for.
Find Your Cork Spec
Five questions. A recommended product grade and the exact guarantee tier that applies to your application.
What is the primary application?
This determines which guarantee tier applies.
Download Our Test Reports
Not ready to spec yet? The data is still yours. Enter your email and receive the complete 2026 test report package — four documents, every tolerance, every method.
Get the Full Report Package
Four test reports, one email. No sales call scheduled unless you ask for one.
No spam. Unsubscribe anytime. Your data stays in Portugal.