Sealing silicone grease and damping silicone grease are widely used for sealing valves, connectors, cable joints and structural gaps. They rely on dense, void-free grease layers to block moisture, dust and medium corrosion. If air bubbles remain inside the silicone grease, they will expand and contract under fluctuating pressure and temperature, forming leakage paths and causing sealing failure. Conventional mixing equipment struggles to turn highly viscous silicone grease; powder fillers tend to settle, and bubbles get trapped inside the paste, which cannot escape easily by standing. The SIENOX planetary stirring defoaming mixer delivers sufficient torque to keep high-viscosity silicone grease rolling and squeezing continuously, achieving thorough defoaming and homogeneous filler mixing under vacuum.

Silicone grease systems are mostly based on silicone oil, blended with large amounts of inorganic fillers to adjust consistency, temperature resistance and chemical resistance. Planetary motion enables full wetting between powders and base oil, reducing white spots from dry powder agglomeration and ensuring consistent viscosity across the whole batch without local thinning or caking. The vacuum defoaming sequence is controllable to slowly extract microbubbles inside the grease, preventing oil spraying and component separation under high negative pressure. The paddle-free design avoids grease sticking on impellers, greatly cutting waste of costly silicone grease materials.

There are many types of sealing silicone grease for high-low temperature resistance, acid-alkali resistance, insulation, thermal conduction and other applications. The equipment can adapt to different formulations by changing cup accessories and adjusting process curves. The fully automated workflow minimizes batch variations caused by manual scraping and hand mixing. Process records are automatically saved for quality departments to trace processing parameters of every batch, meeting the quality management system requirements of industrial sealing suppliers.

Sealing failure may lead to air leakage, water seepage, corrosion and even equipment breakdown. Long-term sealing demands extremely high density of grease. During sample testing, customer working conditions can be simulated to check voids in the applied silicone grease after defoaming and evaluate sealing stability.

Targeting the pain points of silicone grease — high viscosity, difficult defoaming and easy separation — the SIENOX planetary stirring defoaming mixer realizes uniform filler dispersion and deep degassing, producing dense and stable sealing silicone grease. It provides a reliable pre-treatment solution for industrial connections, pipelines and electrical joint sealing.