Silicone oil is frequently used as a lubricant in laboratory instruments due to its chemical inertness, thermal stability, and long-lasting lubricating properties. Unlike conventional oils, silicone oil does not easily oxidize or gum up, making it ideal for precision equipment such as vacuum pumps, glass joints, and mechanical stirrers.

In glassware applications, a thin layer of silicone oil is applied to ground glass joints to create smooth connections and reduce wear during assembly or disassembly. Its resistance to evaporation ensures that the lubricant remains effective even after prolonged use at varying temperatures.

Additionally, silicone oil serves as a reliable vacuum grease alternative in certain setups, maintaining airtight seals without contaminating sensitive reactions. Because of its low volatility, it minimizes the risk of interfering with analytical results.

As laboratory practices move toward cleaner and more sustainable materials, new formulations of silicone oils are being developed with enhanced biodegradability while retaining their superior lubricating properties.

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