HIVAC-G
HIVAC-G is a grease formulated with refined silicone oil as the base oil and fine silica powder as the thickener. It features excellent heat resistance, oxidation resistance, and chemical stability. Highly refined to minimize volatile components, it supports high vacuum performance down to the 10⁻⁶ Torr range. With excellent compatibility with mating surfaces, gaskets, and other components, it is widely used for sealing applications in various high-vacuum equipment.
Product Details
Product Features
Extremely low volatility, ideal for ultra-high vacuum environments
Excellent heat resistance, oxidation resistance and chemical stability
Superior sealing performance and compatibility with mating surfaces
Reliable electrical insulation properties
Applicable Industries / Equipment
High-vacuum equipment industry: Used for sealing and lubricating devices such as vacuum coating machines, diffusion pumps, and vacuum chambers, enabling stable high-vacuum environments.
Power and electrical industry: Provides sealing and protection for high-voltage electrical equipment, valves, and insulating components, combining excellent insulation performance with chemical stability.
Automotive industry: Lubricates and seals brake pumps, valves, and rubber/plastic parts to prevent aging, adhesion, and wear.
| Project | Parameters |
|---|---|
| Appearance | White paste-like |
| Specific gravity（25℃） | 1.03 |
| Viscosity（25℃/mixed） | 209 |
| Oil separation degree（200℃×24h，%） | 0.1 |
| Copper strip corrosion（room temperature×24h） | Qualified |
| Insulation breakdown strength（0.1mm） | 4 kV |
| Volume resistivity | 900 TΩ·m |
| Dielectric constant（60Hz） | 2.82 |
| Dielectric loss tangent（60Hz） | 2.2×10⁻⁴ |
| Operating temperature range | -50～200 ℃ |
| Volatile matter（200℃×24h，%） | 0.1 |
| Low molecular silicone oxide content（ΣD₃~D₁₀） | Below 100 ppm |
| Packaging | 100g、1kg |
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