Excellent adhesion to various materials

LOCTITE SI 5990 is a non-corrosive silicone sealant that excels in adhesion to different surfaces, including metals and plastics. This makes it suitable for a wide range of applications in the automotive sector.

Ideal for large gaps and copper

Thanks to its thixotropic properties, this sealant is ideal for applications with large gaps. It is specially designed for use on copper, making it particularly suitable for specific automotive applications.

High temperature resistance

LOCTITE SI 5990 offers excellent temperature resistance and is suitable for applications up to 350°C. This makes the product ideal for use in high-temperature environments.

Electrical insulation and oil resistance

In addition to sealing, this product also provides electrical insulation, making it highly versatile. Furthermore, it is oil-resistant, which contributes to the durability of the seal.

Easy application and curing

The sealant cures when exposed to humidity and forms a tough rubber gasket. The thixotropic nature reduces run-off after application, ensuring precise and efficient use.

• Color: copper-colored
• Maximum gap: 1.0 mm
• Lab shear strength: 1.03 N/mm²
• Curing speed: 2.5 mm/24 hours
• Content: 40 ml