Tap hole cone
Refractory Tap Hole Plugs & Stoppers for Aluminium Casting – Heat-Resistant up to 1300°C
Our refractory tap hole plugs and stoppers are designed for safe and precise control of molten metal flow in aluminium foundries and casting operations. With a heat resistance of up to 1300°C, these plugs ensure operational safety, efficiency, and reliability.
Made from asbestos-free materials, they provide excellent dimensional accuracy and are available in standard sizes as well as customized dimensions for your specific needs. Their non-stick aluminium properties and low thermal conductivity improve process safety, reduce downtime, and help achieve consistent casting quality.
- PRODUCT VARIATIONS
- Manufacture according to customer specifications
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Key Advantages
Heat resistance up to 1300°C for maximum durability
Custom manufacturing available for any size or shape
Non-stick aluminium properties ensure clean casting processes
Energy-efficient due to low thermal conductivity
Lightweight yet strong for easy handling and long service life
Designed for smooth, controlled molten metal flow
Application Areas
Our refractory plugs and stoppers are ideal for:
Aluminium foundries and smelting plants
Tapping systems in cupolas and melting furnaces
Distribution systems for stable metal flow
Aluminium alloy casting processes requiring precision and safety
Property Details Heat Resistance Up to 1300°C (KFT) Material Options Ceramic fiber, mineral fiber, or biosoluble fiber Applications Foundries, smelting furnaces, distribution systems Customization Available upon request Contact Us
For more information or a custom quote , please contact us
Frequently Asked Questions (FAQ)
What is the temperature resistance of the plugs?
Our plugs are heat-resistant up to 1300 °C, making them ideal for use in melting furnaces, cupola furnaces, and for aluminium casting.
Can I order custom sizes or shapes?
Yes, we manufacture custom plugs based on your drawings and specifications, ensuring a precise fit for your application.
What are the typical applications?
Our plugs are used in foundries, aluminium plants, and smelting operations—wherever a safe and controlled molten metal flow is required.
How do the plugs improve process safety?
Thanks to their high dimensional accuracy and temperature stability, the plugs enable clean processes, reduced downtime, and greater system safety.
Do the plugs help with energy efficiency?
Yes. Their low thermal conductivity contributes to energy savings and cost reductions in your operation.
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K. Hoffmann GmbH
For over 40 years, we have been manufacturing high-temperature-resistant boards, pressed, and milled molded parts from Vermiculite.
Due to its special properties, vermiculite is particularly suitable as a lightweight insulation material and is characterized by its temperature resistance up to 1100 °C.
If you are also looking for a sustainable insulation material without health concerns, then contact us.
