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Silicon Rubber Cones


Silicon Rubber Cones are flexible, heat-resistant lab accessories used to form airtight seals between glassware and equipment. Their conical shape accommodates various diameters, making them ideal for use in chemical, biological, and analytical labs.

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Silicon Rubber Cones are versatile, chemically-resistant adapters designed to provide tight, leak-proof seals between glassware and tubing or to act as stoppers/adapters in distillation, filtration, or vacuum systems. Made from high-grade silicone rubber, these cones are flexible, heat-resistant, and autoclavable, making them ideal for a variety of laboratory and industrial applications. Each cone features a graduated taper to accommodate a wide range of glassware and tubing diameters, ensuring a snug fit and reliable seal without damaging fragile glass. These cones are reusable, easy to clean, and remain flexible even under extreme temperature conditions.

Feature of Silicon Rubber Cones

  • High-Quality Silicone Material:
    Made from platinum-cured or peroxide-cured silicone, offering excellent elasticity, chemical resistance, and durability.

  • Temperature Resistant:
    Withstands temperatures from -60°C to +250°C, suitable for autoclaving and high-temperature operations.

  • Multi-Step Design:
    Conical, stepped design allows compatibility with multiple inner and outer diameters, reducing the need for multiple adapters.

  • Chemical Resistance:
    Resistant to acids, alkalis, solvents, and other laboratory reagents.

  • Autoclavable & Reusable:
    Ideal for sterile environments; reusable after cleaning and sterilization.

  • Non-toxic and Food Grade:
    Complies with FDA and USP Class VI standards (upon request), making it safe for sensitive applications.

  • Color Options:
    Typically available in natural/translucent, red, or blue silicone. Custom colors available on bulk orders.

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