Technical sight glasses | ACI Industriearmaturen GmbH

Technical glasses, borosilicate glass, quartz glass and more

ACI Industriearmaturen supplies borosilicate glass according to DIN 7080 and 7081 MAXOS®, also in special versions made of borofloat glass ® and Suprax ® glass. Soda-lime glass (press-hard glass) according to DIN 8902 and DIN 8903, quartz glass and sapphire glass also for optical applications, ROBAX® glass ceramic, laminated safety glass (LSG) as protective glass for fittings or for customer-specific applications and much more. We optimize your system with the highest quality glass. Take a look around our pages and contact us for qualified advice. Do not hesitate with special requirements!

We supply technical glasses like borosilicate glass according to DIN 7080, DIN 7081, DIN 8902, DIN 8903, borosilicate glass tubes and glass cylinders made of borosilicate glass 3.3 (Duran or Simax), ceramic glasses, metal fused safety glasses, high-temperature glasses like quartz glass or sapphire glass. We can also process and supply plexiglass or acrylic glass.

Our product range for technical glasses and special glasses for an effective view.

Borosilicate glass is a highly resistant glass which is therefore frequently used in both chemical and general industry. We offer borosilicate glass in hardened design according to DIN 7080 and DIN 7081 (MAXOS®). Should you require dimensions outside this standard, we can manufacture the glasses from Suprax8488 blanks (borosilicate glass from the manufacturer Auer Lighting) or from borofloat glass. Borosilicate glass according to DIN 7080 and 7081 as well as soda lime glass according to DIN 8902 and 8903 are subjected to a thermal tempering process (hardening). As a result, an internal stress change takes place in the glass, which means that its bending strength increases. Thermally toughened glass is also referred to as safety glass, since broken glass does not produce large sharp-edged pieces but small blunt fragments. We are also talking here about toughened safety glass (ESG glass), which is particularly popular in industry and chemistry due to these properties. In addition, borosilicate glass is characterised by its good chemical and temperature resistance. Hardened borosilicate glass can be used for long-term stress max. 280°C, briefly up to 300°C, mica-protected even up to 320°C. Borofloat glass without safety tempering can even be used permanently for temperatures from 450°C to 500°C for short periods. Soda-lime glass according to DIN 8902 and 8903, on the other hand, is only suitable for temperatures of 150°C max.

Among the most important chemically resistant technical glasses for us is quartz glass SiO2 (fused quartz glass), also called silica glass, which has a low coefficient of thermal expansion similar to borosilicate glass. In addition, quartz glass is only damaged by a few acids and, unlike other technical glasses, can withstand temperatures of up to 1100°C. In quartz glass, we have to differentiate between natural quartz glass and synthetic quartz glass. Synthetic quartz glass is manufactured from pure silicon tetrachloride (SiC14) in a flame pyrolysis process. For natural quartz glass, on the other hand, rock crystal is ground into powder and melted using a hydrogen/oxygen flame. Quartz glass has many positive properties such as high temperature resistance, good thermal shock resistance, low coefficient of thermal expansion and high purity. Quartz glass not only has excellent chemical resistance but also good light transmission. Therefore quartz glass is also often used in optical applications because quartz glass offers excellent optical properties in the ultraviolet, optical and infrared wavelength range. Due to these properties it is also frequently used in laser applications. Quartz glass is therefore one of our frequently used technical glass which is used in many fittings for high-temperature applications.

One of the most important technical glasses for us is sapphire glass. Sapphire glass is even more resistant than borosilicate glass and quartz glass. Sapphire glass is one of the second hardest transparent materials after diamonds. It is much more scratch-resistant than other types of glass. In addition to its technical application, it is also often used as optical glass or as watch glass. Sapphire glass is made of highly pure synthetic aluminium oxide and, unlike other types of glass, has a crystalline structure. The production of sapphire glass is unfortunately quite complex and therefore sapphire glass is also quite expensive. At high temperatures of up to 2000 degrees Celsius or in applications where an extremely high chemical purity is required, there is no alternative to sapphire glass.

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