Rubber Corks (Euro Design, DIN 12871) are high-precision tapered rubber stoppers manufactured according to the DIN 12871 standard, ensuring uniformity, dimensional accuracy, and chemical resistance for use in professional laboratories and industrial applications. Designed specifically for European standard laboratory glassware, these corks are ideal for sealing test tubes, flasks, reagent bottles, and other lab containers. Constructed from premium-grade natural rubber, neoprene, or silicone, the Euro-design corks are durable, non-reactive, and capable of withstanding a broad temperature range. The tapered geometry allows for a secure, leakproof fit, while the precision-molded surfaces ensure optimum sealing and easy removal. as flasks, test tubes, and reagent bottles. These corks are precisely engineered to conform to DIN (Deutsches Institut für Normung) 12871, ensuring uniform dimensions, reliable sealing, and compatibility with European-standard glassware.
Feature of Rubber Corks Euro Design DIN 12871
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Standard Compliance:
Complies with DIN 12871, ensuring standardized sizing and performance across European laboratories -
Materials:
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Natural Rubber: General-purpose, flexible
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Neoprene: Oil and chemical resistant
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Silicone: High-temperature resistant, inert
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Design & Fit:
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Tapered cylindrical body
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Precision-molded for easy insertion and removal
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Smooth surface finish for tight sealing
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Variants:
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Solid (no holes) or bored (1–2 holes) for tubing or instrumentation integration
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Available in standardized Euro sizes 000 to 10
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Chemical & Thermal Resistance:
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Resistant to acids, alkalis, organic solvents
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Temperature range:
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Natural rubber: −40°C to +70°C
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Silicone: −60°C to +250°C
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Color Options:
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Black (natural or neoprene rubber)
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White/translucent (silicone)
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Autoclavable:
Especially for silicone variants, suitable for sterile applications
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