Powerful flange sealant for large gaps

LOCTITE SI 5980 is a black, thixotropic, alkoxy-silicone flange sealant specially developed for applications with large gaps. This one-component product cures at room temperature under the influence of humidity and forms a rigid rubber gasket. Thanks to its thixotropic properties, it is easy to apply without the sealant running after application.

Excellent resistance to oil and glycol

This flange sealant offers excellent resistance to engine oils and glycol, which is essential for automotive applications. The product is resistant to vibrations and can withstand low pressure tests directly after flange assembly.

Applications in the automotive sector

LOCTITE SI 5980 is ideal for sealing sheet metal covers such as timing covers and oil pans. The product is suitable for flexible flanges and can fill large gaps, making it versatile for various automotive applications.

Technical specifications

• Color: black
• Curing mechanism: room temperature vulcanization (RTV)
• Temperature range: -55°C to +200°C
• Extrusion rate: 220 g/min
• Tack-free time: 30 minutes
• Recommended for use with: metal and plastic

Benefits of LOCTITE SI 5980

• Easy application: thanks to thixotropic properties, the product does not run after application.
• Excellent oil resistance: resistant to engine oils and glycol.
• Suitable for large gaps: ideal for applications with flexible flanges and large gaps.
• Vibration resistant: retains its sealing properties under vibrating conditions.

Instructions for use

For optimal performance, it is important to thoroughly clean and degrease the surfaces before applying LOCTITE SI 5980. Apply an even layer to one of the flange surfaces and assemble the parts within the specified time. Allow the product to cure according to the specifications for a durable seal.