Boron nitride has the lowest density, low friction times, lubricity and non wettability. In addition, it has good chemical inertness and high temperature stability.Boron nitride powder filler can improve the thermal conductivity and electrical insulation,
The plastic seals made of two different materials can effectively play a role in preventing unsealing. Although the material of plastic seals is very common, its role in our daily life cannot be underestimated.