Sealing components for high-speed rotary joints

What type of seal should we use for high-speed rotary joints? If an O-ring is used, it is best to add an elastic pressure to the sealing ring to maintain contact with the sealing surface. However, the effect is not very ideal. It is better to use a skeleton seal and a mechanical seal. Generally, bearings are required for rotation. The bearings need to have a bearing cover that is tightly pressed, and the sealing ring can be installed on the bearing cover. According to the different sealing materials and sealing degrees, there are many sealing methods: the most common ones are rubber material seals, packing seals, mechanical seals, and labyrinth seals.

The high-speed rotary joint adopts NBR nitrile rubber sealing ring: suitable for use in petroleum hydraulic oil, glycol hydraulic oil, diester lubricating oil, gasoline, water, silicone grease, silicone oil and other media. It is currently the most widely used and cost-effective rubber seal. Not suitable for polar solvents such as ketones, ozone, nitro hydrocarbons, MEK, and chloroform. The general temperature range for use is -40~120 ℃. HNBR hydrogenated nitrile rubber sealing ring: It has excellent corrosion resistance, tear resistance, and compression deformation resistance, and has good resistance to ozone, sunlight, and weather. Better wear resistance than nitrile rubber. Suitable for washing machinery, automotive engine systems, and refrigeration systems using the new environmentally friendly refrigerant R134a. Not recommended for use in alcohol, ester, or aromatic solutions. The general temperature range for use is -40~150 ℃.