Borosilicate reflex glass / reflex sight glass
 
Its made from Borosilicate, it is used in lever gauge in boiler for water position. It is also named:  Reflex Gauge Glass, Sight glass, Reflex Glasses, Reflex sight glass, Spares For level Gauge

The category is as follows:
1) Three tendons (four grooves)
2) Two tendons (three grooves)
 
Sight glass/gauge glass - three tendons (four grooves)
340 x 34(30) x 17mm, 320 x 34(30) x 17mm, 280 x 34(30) x 17mm
250 x 34(30) x 17mm, 218 x 34(30) x 17mm, 190 x 34(30) x 17mm
165 x 34(30) x 17mm, 140 x 34(30) x 17mm, 115 x 34(30) x 17mm
400 x 34 x 17mm, 370 x 34 x 17mm, 300 x 34 x 17mm
400 x 34 x 17mm, 370 x 34 x 17mm, 300 x 34 x 17mm
The other size is optional or according to the requirements of customers.
Working temperature: 260 degree C, Working pressure: 4.0MPa

Sight glass/gauge glass - two tendons (three grooves)
340 x 34 x 17mm, 320 x 34 x 17mm, 280 x 34 x 17mm
250 x 34 x 17mm, 218 x 34 x 17mm, 190 x 34 x 17mm
165 x 34 x 17mm, 140 x 34 x 17mm, 115 x 34 x 17mm
280 x 34 x 22mm, 280 x 28 x 17mm, 250 x 34 x 20mm
250 x 34 x 22mm
The other size is optional or according to the requirements of customers.
Working temperature: 260 degree C, Working pressure: 4.4MPa
 
Packing: each piece in a box and then in carton.