Ethyl silicone oil, as a high-performance synthetic fluid, plays a crucial role in the field of electrical insulation. Its core value lies not only in providing an effective electrical insulation barrier—preventing current flow along unintended paths which could cause short circuits or equipment failure—but also in its exceptional compatibility with and non-corrosive nature towards the wide range of materials commonly found inside electrical equipment. This establishes a solid foundation for the long-term stable operation and reliability of the equipment.

Electrical equipment is a complex system composed of diverse materials. Its interior typically contains various metal components, such as copper wires, aluminum heat sinks, and steel structural parts; a variety of plastic or polymer materials, like Polyvinyl Chloride (PVC) or Polyethylene (PE) used for cable insulation, and Nylon (PA) or Polycarbonate (PC) for manufacturing connectors and housings; as well as various rubber or elastomer seals, such as silicone rubber, nitrile rubber, and EPDM rubber, used to ensure equipment sealing against moisture and for vibration damping. During long-term operation, these materials will inevitably come into direct contact with the internal insulating medium. If this insulating medium is chemically aggressive or incompatible, it can lead to a series of serious problems, such as corrosion of metals, swelling/embrittlement of plastics, or deformation/failure of rubber seals, ultimately resulting in degraded equipment performance or even complete damage.

Ethyl silicone oil demonstrates significant advantages in meeting this challenge. Firstly, it is highly chemically inert towards metallic materials. Whether common copper, aluminum, iron, steel, or other alloy materials, ethyl silicone oil does not engage in electrochemical reactions or chemical corrosion with them. It can form a stable protective film on metal surfaces, effectively isolating them from moisture and oxygen. This not only prevents oxidation and rusting of metals but also avoids the risk of increased conductive pathways or reduced mechanical strength due to corrosion products. This characteristic is particularly important for key metal components like precision circuits, relay contacts, and transformer windings, ensuring the long-term stability of their electrical contact performance and mechanical integrity.

Secondly, ethyl silicone oil exhibits good compatibility with most engineering plastics and elastomer materials. Unlike some mineral oils or organic solvents, ethyl silicone oil does not cause significant swelling, dissolution, or stress cracking in most plastics (e.g., PC, ABS, PP). It maintains the original mechanical strength and dimensional stability of these polymer materials, preventing housing deformation, degradation of insulation performance, or mechanical failures caused by immersion in the insulating oil. Similarly, for the critical rubber seals within equipment, ethyl silicone oil also shows a gentle character. It does not cause excessive swelling, softening leading to loss of elasticity in rubbers, nor conversely cause them to harden and crack, as some hydrocarbon-based greases might. This compatibility ensures the long-term effectiveness of the sealing system, preventing secondary failures such as insulating oil leakage or moisture ingress due to seal failure, thereby safeguarding the dry and clean internal environment of the equipment.

This broad material compatibility stems from the stable chemical structure of ethyl silicone oil itself. Its backbone consists of strong silicon-oxygen (Si-O) bonds, with stable ethyl groups as side chains, resulting in a saturated molecular structure that is resistant to decomposition. This structure makes it less likely to react chemically with other substances, exhibiting excellent chemical stability and thermal-oxidative stability. Therefore, during long-term operation, even under elevated temperature conditions, ethyl silicone oil itself is unlikely to produce acidic substances or other corrosive degradation products. This fundamentally eliminates the potential for the insulating medium itself to cause damage to contacted materials as it ages.

In summary, the characteristics of being "non-corrosive" and "widely compatible" allow ethyl silicone oil to transcend the function of merely providing electrical insulation. Acting as a mild and stable medium, it coexists harmoniously with the diverse materials—metals, plastics, rubbers—inside electrical equipment, forming a stable and reliable integrated system. This property significantly extends the service life of various components within the equipment, reduces unexpected downtime and maintenance needs caused by material incompatibility, and enhances the operational reliability and safety of the entire electrical equipment throughout its full lifecycle. Therefore, when selecting an insulating medium with high demands for equipment friendliness, ethyl silicone oil, by virtue of its comprehensive protective capability for equipment constituent materials, becomes a proven and preferred choice.