Fasten seams or joints together with welds, bolts, cement, rivets, solder, caulks, metal drive clips, or bonds to assemble components into products or to repair sheet metal items. Assemble products or production equipment.
Vegetable glycerin (VG) is a natural organic glycerol that is made from vegetable oil, which comes from palm and/or coconut oil. The vegetable glycerin is mixed with water, then heated to a high pressure and temperature. The glycerin dissolves from the fatty acids and is then absorbed by the water.
Now to the numbers: 22, 46 and 315 refer to the viscosity grade (VG) of the oil; 22 and 46 are ISO grades and refer to the oil's kinematic viscosity in centistokes at 40 degrees Celsius, plus or minus 10 percent. So, an ISO VG 46 hydraulic oil has a viscosity of between 41.4 and 50.6 centistokes at 40 degrees Celsius. Viscosity grade 315 is a now mostly obsolete ASTM viscosity number - 315 SUS at 100 degrees Fahrenheit, which is roughly equivalent to ISO VG 68.