Glass has excellent corrosion resistance in general but is attacked and dissolved in service by alkalain solution, resulting in thinning of the wall and premature failure or replacement. High alkalinity and high temperature increase the rate of attack.

LUKING-AR has excellent resistance to high alkalinity and high temperature which enables reflex type gage is adoptable to high pressure boiler aplications.

• Alkalin Resistance
  LUKING-AR is 800 times stronger than alumino silicate glass and 1,750 times than borosilicate glass.

• Mechanical strength
  Bending strength : 270N/mm2(27kgf/mm2).

• Temperature resistance
  Maximum service temperature : 500℃.