LOCTITE® SI 5940

Known as LOCTITE 5940

Features and Benefits

Black, 1-part, room temperature vulcanizing acetoxy silicone paste sealant.
LOCTITE® SI 5940 is a black, 1-part, room temperature vulcanizing acetoxy silicone paste sealant. It is primarily used as a general-purpose sealing and bonding agent, space-filling rubber adhesive or formed-in-place gasket. It adheres to clean metal, glass, most non-oily woods, silicone resin, vulcanized silicone rubber, ceramic, natural and synthetic fibre and many painted and plastic surfaces.
  • Solvent-free
  • Excellent resistance to ageing, shrinkage, cracking and discoloring
  • Cures on exposure to moisture in the air to form a tough, flexible, waterproof, oil-resistant silicone rubber bond
  • Typically used in applications with an operating range of -50°C to +200°C and can intermittently reach temperatures up to +220°C
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Technical Information

Chemical basis / base Acetoxy Silicone
Color Black
Cure speed vs time 6.0 mm
Extrusion rate 200.0 g/min.
Fixture time 30.0 min.
Gap fill 6.0 mm
Key characteristics Thixotropic
Lab shear strength 1.3 N/mm²
Physical form Paste
Recommended for use with Ceramic, Composite, Glass, Metal: Aluminum, Metal: Steel, Plastic