Glass consultant for tubular sight glasses and capillaries made of borosilicate glass

Tubular sight glasses made of borosilicate glass can be used up to a temperature of 300°C and above. Depending on the outside diameter and the wall thickness, tubular sight glasses made of borosilicate glass can be used for moderate to high pressures. We would be happy to help you select a suitable glass for your application. Feel free to contact us for more information.

Subject to technical changes and calculation errors.

Technical properties


Water resistance according to DIN 12111 (ISO 719) Hydrolysis class 1

Acid resistance according to DIN 12116 Acid class 1

Alkali resistance according to DIN 52322 Alkali class 2


Outer diameter from 3 to 465 mm

Wall thicknesses 0.45 to 14 mm (depending on outer diameter)

Length up to 10.000 mm


Bending tensile strength ≥ 7 N/mm² / 1015 psi

max. operating temperature 300 °C / 572 °F (short-term)


Dimensional tolerances on request

+49 (0) 2403 748 850
info@aci24.com