Loctite Si 5990 Copper Silicone Sealant

The product cures on exposure to ambient moisture to form a tough silicone rubber gasket. Loctite SI 5990 adheres to a wide range of substrates, including metal and plastic.

Loctite SI 5990 is a thixotropic product. Its viscosity decreases under stress. This reduces the migration of liquid product after application to a substrate. Loctite SI 5990 cures upon exposure to atmospheric moisture, becoming tack free in about 40 minutes. Full properties are achieved over the course of 7 days. Loctite SI 5990 provides good oil resistance and electrical insulation. It can withstand temperatures up to 350°C.

• Copper in colour
• Suitable for a wide variety of substrates
• High temperature and oil resistance
• Provides electrical insulation
• Leading in health & safety features

How to use Loctite SI 5990:

1. For best results, clean all surfaces with a Loctite solvent. Use Loctite SF 7063.
2. Moisture curing begins immediately after the product is exposed to the atmosphere. Assemble parts within a few minutes after the product is dispensed.
3. Allow for full curing time before subjecting to heavy service loads.
4. Excess material can be wiped away with non-polar solvents.

Storage

Store Loctite SI 5990 in the unopened container in a dry location. Optimal Storage: 8° C to 21° C. Storage below 8° C or greater than 28° C can adversely affect product properties.