Chemlok
Chemlok 608
One-coat adhesive for bonding unvulcanized, peroxide-cured silicone elastomers to metal and other rigid substrates.
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Product overview
Chemlok 608 is a one-coat adhesive for bonding unvulcanized silicone elastomers to rigid substrates. It is intended for peroxide-cured VMQ, PMQ, and PVMQ compounds, including silicone systems that require post cure.
Key benefits
- Single-coat application reduces the number of coating steps.
- Compatible with multiple peroxide-cured silicone elastomer types.
- Resists aggressive service environments.
- Can be highly diluted for economical, uniformly thin application.
Suitable systems
- Silicone-to-metal bonding.
- Unvulcanized VMQ, PMQ, and PVMQ silicone elastomers.
- Silicone compounds that require post cure.
Application guidance
For metal substrates, remove oils, grease, rust, scale, and oxide coatings by suitable chemical or mechanical preparation. Apply Chemlok 608 as a uniformly thin coat. When dilution is required, use 5–10 parts methanol to 1 part Chemlok 608 by volume. Air-dry for 10–30 minutes at room temperature before further processing.
Typical properties
| Property | Typical value |
|---|---|
| Appearance | Clear to hazy yellow liquid |
| Density | 830–860 kg/m³ (6.9–7.2 lb/gal) |
| Solids by weight | 18–20% |
| Flash point, Seta | 3°C (38°F) |
| Solvent system | Methanol, naphtha, isopropanol, ethanol |
Typical values are provided for reference and are not product specifications. Confirm current technical data, application conditions, storage requirements, and safety information before use.