This type of crossline glass is used for monitoring the process at elevated temperatures, with particular resistance to the effects of fire. Maximum operating temperature is 750 ° C, while the current may be 900 ° C.                                                                        
It is made in circular and rectangular shapes with the possibility of distortion, with the thickness of 4-5mm. Finishing processing of the edges of this type of glass is very important because in this way the glass keeps listed characteristic.