How to Choose Automotive Body Sealant?

Automotive body polyurethane sealant is an essential tool for effectively protecting the joints of vehicle components. Perfect for sealing joints, gaps, and panels in automobiles, providing waterproofing, thermal insulation, and structural support. These sealants are crucial for preventing water penetration, reducing noise, and improving the overall integrity of the vehicle.

What to Consider When Choosing Automotive Body Panel Sealants?

• Durability. It must be able to withstand moisture, UV radiation, high and low temperatures, and chemical corrosion.
• Elasticity. Car bodies are constantly subjected to vibration during driving, requiring the sealant to be shock-resistant and abrasion-resistant.
• High Adhesion. Car bodies are typically made of galvanized steel, cold-rolled steel, hot-formed steel, aluminum sheets, and composite materials. Choosing an inappropriate sealant can easily lead to interface peeling or cracking, causing moisture penetration, increased noise, and structural loosening.
• Paintability. Auto body sealants are often applied after painting or as a cover layer, making curing speed an important consideration. The curing time of the sealant directly impacts the application speed.

Why Choose Polyurethane Sealant For Automotive Body?

• Neutral properties, non-polluting, cures at room temperature.
• Превосходная прочность.
• Высокая устойчивость к истиранию и прочность на разрыв.
• Good weather resistance and water resistance.
• Good flowability, will not drip.
• Use directly on-site—no mixing required
• Paintable, with good compatibility with paints.
• Non-corrosive.

Tengyu provides professional automotive adhesives and sealants as well as custom solutions. TP703 Automotive body seam sealant is a high-elasticity polyurethane automotive sealant specifically for sealing external and internal joints in automotive bodies.

TP703 car bodywork sealant is a one-component polyurethane sealant. Perfect for metal connections of automotive bodies. After curing, it provides a permanent, elastic bond to materials connected to the automotive frame. It features waterproof and aging-resistant properties and good adhesion.

Typical Applications

• Sealing of welded joints in automobiles and machinery.
• Sealing of joints in containers and shelters.
• Sealing and waterproofing of joints in vans.
• Sealing of air conditioning systems.
• As an adhesive for automotive sheet metal.