Borosilicate sight glass

Product details

The material is borosilicate glass, thermally tempered, with low coefficient of thermal expansion, good thermal stability and chemical performance.

Physical property

Density: 2.23±0.02g/cm³

Coefficient of thermal expansion: (0-300°C) 3.3±0.1x10^-6 K^-1

Softening point: 820±10°C

Strain point: 516±10°C

Working temperature: up to 450°C

Chemical resistance

Alkali resistance: alkali class 2, tested to ISO695/DIN52322

Water resistance: tested to DIN-ISO719-HGB1/DIN-ISO720-HGA1

Acid resistance: acid class 1, tested to ISO1776/DIN12116

Application

Widely used in petro-chemical plants, chemical processing, boilers and storage vessels, high power lighting, marine engineering etc.

Standard DIN dimensions