Versatile application on various flanges

LOCTITE® SI 5699 is a flexible silicone sealant that is ideal for sealing different types of flanges. Whether it concerns flexible flanges, machined or cast surfaces, this sealant provides a reliable seal on both metal and plastic materials.

Fast curing and ease of use

This sealant cures when exposed to humidity and forms a tack-free surface within 10 minutes. This ensures efficient application and minimizes waiting times during assembly work.

Excellent resistance to oil and water/glycol

LOCTITE® SI 5699 is specially designed to resist oil and water/glycol. This makes the product particularly suitable for applications where these fluids are present, such as in transmissions and other automotive components.

Technical specifications

• Color: Grey
• Content: 80 ml
• Temperature range: -55°C to +200°C
• Curing mechanism: Vulcanization (RTV) at room temperature
• Tack-free time: 10 minutes
• Recommended for use with: Metal and plastic

Areas of application

• Automotive sector:
• Sealing valve covers
• Sealing water pumps
• Sealing thermostats
• Sealing transmission covers

• Sealing differential covers

• Industrial applications:

• Sealing various flange connections

• Sealing cast metal housings

Benefits of LOCTITE® SI 5699

• High flexibility: Suitable for various flange types, including stamped steel covers.
• Fast processing: Tack-free after 10 minutes, ensuring efficient assembly.
• Excellent fluid resistance: Resistant to oil and water/glycol, ideal for automotive and industrial applications.
• Wide temperature range: Performs reliably at temperatures from -55°C to +200°C.

Usage tips

• Ensure surfaces are clean and dry before applying the sealant.
• Apply an even layer to one of the flange surfaces.
• Assemble the parts within 10 minutes after application.
• Allow the sealant to cure sufficiently before putting the system into operation.

With LOCTITE® SI 5699 you choose a reliable and versatile sealing solution that meets the high demands of both automotive and industrial applications.