The company

Welcome to QSIL.

For decades, we have been shaping the technological future with products made of quartz and specialty glass, technical ceramics and refractory metals. At our nine company locations in Germany, the Netherlands and England, as well as with sales partners around the world, we develop and manufacture components precisely to measure in customer-specific shapes, dimensions and batch sizes.

We supply large corporations in numerous industries and fields of application as well as small and medium-sized companies. Our experience and distinctive technological strength make QSIL the perfect advisor and service provider in developing innovative and forward-looking solutions for today’s technological challenges.

Our customers benefit from the complete range of high-purity, high-melting-point and high-temperature high-performance materials of the highest quality. Worldwide and yet from a single source. Contact us – we will be happy to advise you!


Top solution for thermal challenges

Quartz glass products offer a variety of important advantages for applications in furnace construction, high-temperature technology, thermal processes and thermal management. Quartz glass features unique thermal and optical properties that make it an ideal material in these demanding applications.

One of the main advantages of quartz glass products is their exceptional heat resistance. Quartz glass can withstand extremely high temperatures. This makes it ideal for use in furnaces and high-temperature applications. It can withstand temperatures of up to 1200°C and beyond, which is crucial for many industrial processes.

‘Another advantage of fused quartz is its high transparency for electromagnetic radiation in the visible and ultraviolet range. This optical property enables precise observation and control of thermal processes inside the furnace or application. It also allows the use of optical pyrometry to ensure accurate temperature measurement and control.

Quartz glass is chemically inert, which means that it is insensitive to most chemical substances. This resistance to aggressive environments is particularly important in applications where chemicals or aggressive gases are present. Quartz glass products are therefore ideal for use in chemical furnaces and processes where chemicals are used.

In addition, fused quartz has low thermal conductivity, which makes it an excellent insulating material. This helps minimize heat loss and increases the efficiency of thermal processes. Quartz glass can withstand rapid temperature changes without breaking, ensuring long life and reliability.


All specifications on our materials.

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Perfect material for highest demands

Ceramic materials have established themselves as the preferred materials for use in furnace construction, high-temperature technology and thermal management. Their unique properties make them an excellent choice for demanding applications where high temperatures, chemical resistance and thermal insulation are critical.

Non-oxide ceramics such as silicon carbide (SiC) or silicon nitride (Si3N4) are characterized by their exceptional heat resistance. They can withstand extremely high temperatures and are resistant to thermal shock. This makes them ideal for use in high-temperature furnace applications. Non-oxide ceramics are also chemically inert, i.e. resistant to aggressive chemicals and acids. This is critical in environments where chemical reactions occur.

Oxide ceramics, such as aluminum oxide (Al2O3) or zirconium oxide (ZrO2), also offer many advantageous properties for furnace construction and high-temperature technology. Oxide ceramics are also heat resistant and can withstand high temperatures. They have good thermal insulation, which leads to energy savings and improved temperature control. Oxide ceramics are chemically stable and have low reactivity, making them suitable for use in chemical environments.


All specifications on our materials.

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Refractory metals

Control heat. Ignite performance.

Our products made from the refractory metals molybdenum, tungsten, niobium and tantalum offer numerous advantages for applications in industries where extreme heat resistance and efficient thermal management are critical.

  1. High melting temperature: These metals have extremely high melting temperatures, which means they remain stable even under extreme heat conditions. This makes them ideal for use in high-temperature furnace applications where other materials would fail.

  2. Resistance to thermal stress: Molybdenum, tungsten, niobium and tantalum are excellent thermal conductors and can withstand high temperatures without compromising their mechanical properties. This makes them reliable and durable for applications where heat resistance and heat dissipation are critical.

  3. Chemical Resistance: These refractory metals are highly resistant to corrosion and react very little with most chemical substances. This makes them ideal for use in chemical reactors where aggressive chemicals are processed and in other environments where chemical resistance is required.

  4. Dimensional stability: Molybdenum, tungsten, niobium and tantalum have low thermal expansion and therefore retain their shape and dimensions even under extreme temperature fluctuations. This is particularly important for applications where precision and stability are required, such as in the semiconductor industry or in high-precision scientific instruments.

  5. Thermal management: Due to their high thermal conductivity and heat dissipation capability, these metals are ideal for thermal management applications. They can efficiently conduct heat from one area to another, helping to cool high-temperature processes.


All specifications on our materials.

No data was found