Polyurethane sealant

1. *Polyurethane Windshield Adhesive*: This is the most commonly used type for windshield installation. It's a one-component adhesive that cures by reacting with moisture in the air. It provides excellent adhesion and durability, making it a preferred choice for many auto glass professionals.

2. *Fast-Curing Polyurethane Sealant*: This type of polyurethane sealant is formulated to cure rapidly, reducing the time needed for the windshield installation process. It's often used in automotive assembly lines and for quick repairs.

3. *Flexible Polyurethane Sealant*: Flexible sealants are designed to accommodate the expansion and contraction of different materials in response to temperature changes and vibrations. They maintain their bond even in dynamic conditions, making them suitable for automotive applications.

4. *UV-Resistant Polyurethane Sealant*: Some polyurethane sealants are formulated to resist UV radiation, which can cause degradation and weakening of the adhesive over time. UV-resistant sealants are ideal for applications where the windshield is exposed to sunlight.

5. *High-Viscosity Polyurethane Sealant*: High-viscosity sealants are thicker and less prone to sagging or running during application. They are often used for vertical or overhead applications, ensuring proper coverage and adhesion.

6. *Low-VOC Polyurethane Sealant*: For environmentally conscious users, low-VOC (Volatile Organic Compounds) sealants are available. These sealants emit fewer harmful chemicals during curing, making them safer for both users and the environment.

7. *Non-Sag Polyurethane Sealant*: Non-sag sealants are formulated to hold their shape without slumping or dripping during application. They are useful for vertical or overhead windshield installations.

8. *High-Temperature Resistant Polyurethane Sealant*: In some cases, vehicles may be exposed to high temperatures, especially in engine compartments. High-temperature-resistant polyurethane sealants are designed to maintain their bond and integrity in these conditions.

When selecting a polyurethane sealant for car windshield pasting or replacement, it's essential to consider factors such as the specific vehicle requirements, environmental conditions, and the expertise of the installer. Always follow the manufacturer's recommendations and guidelines for proper application and curing procedures to ensure a secure and long-lasting windshield bond.