Sealant is a polymer material with adhesive and sealing properties, compounded mainly from base material, curing agent, filler, plasticizer, stabilizer and other components. Its core function is to fill gaps between two or more components, block penetration of gas, liquid, dust and other media. Meanwhile, it possesses certain bonding strength to integrate components as a whole, improving structural integrity and service life.

High-quality sealants feature the following core properties, which determine their applicability in diverse scenarios:

1. Sealing performance: The fundamental property. It maintains long-term gap tightness and effectively isolates water, air, oil and contaminants, preventing structural damage and functional failure caused by leakage.

2. Adhesion performance: Firmly bonds with various substrates including metal, glass, stone, plastic and concrete. It realizes tight component connection without extra fasteners, with bonding strength complying with service requirements.

3. Flexibility: No brittle cracking after curing. It accommodates minor substrate deformation from thermal expansion, contraction and vibration, avoiding seal layer rupture and sustaining long-lasting sealing effect.

4. Environmental resistance: Resists erosion from extreme temperature, ultraviolet rays, rain, acid and alkali. It resists aging, discoloration and peeling, and keeps stable performance under varied working conditions.

5. Workability: Moderate viscosity facilitates stirring and coating. Curing speed matches construction progress for easy operation without sophisticated professional equipment.