RTV142 one-component, ready-to-use adhesive sealant cures to a tough, durable, resilient silicone rubber on exposure to atmospheric moisture at room temperature. Methyl alcohol vapors are released from the sealant surface as a by-product of cure. These vapors have low odor and are non-corrosive to metals. An important property of RTV142 is its low volatility.
RTV142 sealant has a thixotropic paste consistency. This allows it to be applied to vertical and overhead surfaces without sagging. Since it utilizes a moisture cure system, RTV142 sealant should not be used in thicknesses of greater than 6mm (¼ inch). When section depths exceed 6mm (¼ inch), Momentive Performance Materials one-component, addition cure or two-component silicone rubber compounds are suggested.
FEATURES:
- One-component product
- Room temperature cure
- Primerless adhesion to many substrates
- Low odor
- Non-corrosive to metals
- Low volatility
- Low-temperature flexibility
- High-temperature performance
- Excellent weather ability, ozone, and chemical resistance
- Excellent electrical insulation properties
APPLICATIONS:
The non-corrosiveness to metals and low volatility of RTV142 rubber adhesive sealants, as well as their paste consistency, make them well suited for critical electronic adhesive, gasketing and sealing applications where a high level of volatile condensible materials cannot be tolerated.
| Cured Properties | |
| Tensile Strength, kg/cm² (lb/in²) | 38.5 (550) |
| Percent Elongation | 400 |
| Hardness, Shore A | 34 |
| Tear Strength, kg/cm (lb/in) | 9 (50) |
| Shear Strength, kg/cm² (lb/in²) | 21.0 (300) |
| Peel Strength, kg/cm (lb/in) | 10.5 (60) |
| Total Weight Loss % | 0.22 |
| Volatile Condensable Materials % | 0.05 |
| % Linear Shrinkage | < 1.0 |
