Sealing material for high-pressure rotary joints

As the name suggests, a rotary joint should have good high temperature resistance and wear resistance. The quality of the rotary joint mainly depends on the sealing effect, and the sealing ring of the rotary joint determines the sealing effect

Flexible graphite material is the most commonly used material for making sealing rings for high-temperature rotary joints and has been widely applied. Flexible graphite material belongs to pure graphite material and does not have adhesives or bonding materials. The performance of flexible graphite is not limited by bonding materials and has the following characteristics:

1. Flexible graphite materials have excellent corrosion resistance and chemical stability against general chemical solvents, petroleum products, esters, steam and other media.

2. Flexible graphite materials have good high temperature resistance. The temperature range for the use of flexible graphite materials is below 400 ℃ in oxidizing media and -200 ℃~1600 ℃ in non oxidizing media.

3. Flexible graphite materials have good resilience, airtightness, radiation resistance, and self-lubricating properties.

Flexible graphite material has many advantages, but its poor strength and susceptibility to damage are fatal disadvantages. Of course, when manufacturing high-temperature rotary joint seals using auxiliary sealing rings, flexible graphite material is a good material.