Plastic sealing rings, gaskets, and plastic corrugated tubes are widely used for sealing in fluid pipelines and electronic circuit shells. They are exposed to water vapor, oil stains, and alternating high and low temperatures for a long time, which can cause hardening, contraction, and the formation of micro gaps, resulting in water leakage, electrical leakage, and circuit moisture damage. Special lubricating protective silicone oil can be used for post-processing of plastic sealing products to enhance sealing reliability and extend service life.
After the plastic sealing parts are formed, they are immersed or sprayed with silicone oil. This forms a flexible silicone protective film on the sealing surface, improving surface smoothness. The resistance during the assembly process of the sealing ring is smaller, avoiding tearing damage caused by installation compression. The protective film has hydrophobic and water-resistant properties, preventing water vapor penetration and preventing the sealing substrate from absorbing water and expanding and deforming. For circuit shell sealing gaskets, it can effectively block water vapor from entering the shell interior, protecting the internal PCB circuits from moisture corrosion.
Ordinary mineral oil will continuously erode PVC, EPDM, TPU and other plastic materials. Long-term contact causes substrate swelling and loss of elasticity. Silicone oil has strong chemical inertness and will not undergo swelling reactions with most plastics. It is suitable for various sealing materials. In outdoor electrical equipment circuit sealing structures, weather-resistant silicone oil resists ultraviolet rays and rain erosion, delays the aging and cracking of plastic sealing, and continuously maintains the sealing effect.
The amount of silicone oil applied in the application process needs to be controlled. Excessive use can easily cause the sealing surface to slip and result in assembly displacement risks. IOTA's special silicone oil has a wide viscosity range, suitable for various processes of immersion and spraying, and takes into account multiple effects such as lubrication, protection, and insulation. With the continuous improvement of waterproof grades for electrical equipment and outdoor control circuits, the demand for plastic sealing silicone oil continues to rise. This provides a complete solution for integrated protection of circuits and plastic sealing.