LOCTITE® SI 5940
Known as LOCTITE 5940
Features and Benefits
A 1-part, black, solvent-free acetoxy silicone-based paste for bonding, sealing and gasketing.
LOCTITE® SI 5940 is a black, multi-substrate, acetoxy silicone compound primarily used as a general-purpose sealing and bonding agent, space-filling rubber adhesive or FIPG (form-in-place gasket). It cures when exposed to moisture in the air to form a tough, flexible, waterproof, oil-resistant silicone rubber bond. It’s solvent-free and offers excellent resistance to aging, shrinkage, cracking and discoloring. LOCTITE SI 5940 adheres to an array of materials, including clean metal, glass, most non-oily woods, silicone resin, vulcanized silicone rubber, ceramic, natural and synthetic fiber and many painted and plastic surfaces. Though typically used in applications with an operating range of -50°C to 200°C (-58°F to 392°F), it can short-term handle temperatures up to 220°C (428°F).
- Solvent-free
- Room Temperature Vulcanization (RTV) cure
- Service/operating temperature: -50°C to 200°C (-58°F to 392°F)
- Excellent resistance to aging, shrinkage and cracking
Documents and Downloads
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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 |
LOCTITE® SI 5940
A 1-part, black, solvent-free acetoxy silicone-based paste for bonding, sealing and gasketing.