LOCTITE® SI 5900 Flange Sealant
Known as LOCTITE 5900
Features and Benefits
Silicone-based gasketing product suitable for various substrates. Good resistance to oil and joint movement.
LOCTITE® SI 5900 is a moisture-cured, heavy bodied, silicone-based form-in-place flange sealant with excellent resistance to oil and joint movement. Its heavy bodied properties allow it to withstand on line, low pressure tests before the product begins to cure. Typical applications include stamped sheet metal covers, and it’s suitable for gaps up to 1mm (0.04") in metal, plastic, glass, and ceramic substrates. It has a skin-over time of just 15 minutes, and once cured provides a seal that won’t shrink, compress, crack or relax, even when exposed to oil or joint movements.
- Excellent oil resistance
- Registered to NSF Category P1
- Thixotropic for ease of application
- Adheres to metal, plastic, glass, ceramic
- Viscoelastic & Finite Strain FEA data cards available
Documents and Downloads
Looking for a TDS or SDS in another language?
Technical Information
| Color | Black |
| Cure type | Room temperature vulcanization (RTV) cure |
| Extrusion rate | 30.0 g/min. |
| Key characteristics | Adhesion: high adhesion, Oil resistance: excellent oil resistance |
| Operating temperature | -65.0 - 400.0 °F (-55.0 - 200.0 °C ) |
| Recommended for use with | Metal, Plastic |
| Storage temperature | 8.0 - 21.0 °C |
| Tack free time | 15.0 min. |
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LOCTITE® SI 5900
Silicone-based gasketing product suitable for various substrates. Good resistance to oil and joint movement.