Before selecting the sight glass, you need to select the advantages and disadvantages of the material of the sight glass and customize the sight glass. There are different materials such as stainless steel, PP, carbon steel and so on. Stainless steel has the advantages of beauty, oxidation resistance and so on. PP material is relatively light, has the advantages of non-toxic, tasteless, has good thermal stability and chemical properties. Carbon steel has the advantages of high hardness and wear resistance.
