SOLUTION
Is polyurethane better than silicone?
Polyurethane is superior to silicone as silicone is really only a sealant and not an adhesive. Users of silicone, usually paired with butyl tape, also usually experience rusting of their pinch weld. Proper polyurethane acts as both sealant and adhesive, guaranteeing that not only does your windshield or backglass stay in place, but it is also sealed from water and will therefore minimize the risk of rusting.
Can silicone adhesive be used for metal bonding of car body?
Can't, because silicone adhesive is corrosive. Polyurethane sealant is for sheet metal.
What factors determine the prices?
Windshield sealant: Density and shear strength. Construction sealant: Density and displacement capacity.
How to choose polyurethane sealant for windshield glass?
PU 188. PU 198 can meet the basic application of automotive windshield repair market. The side glass is also a windshield glass, relatively low requirements, you can choose PU43. 903. 255FC. Bullet train windshield is of higher requirement.
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