In various types of mechanical equipment, although the sealing ring is small in size, it shoulders the responsibility of preventing fluid leakage, and its performance is directly related to the stability and service life of equipment operation. In depth understanding of sealing rings can be expanded from dimensions such as material, sealing performance, lubrication, and maintenance.

Diverse materials, suitable for multiple jobs

The material of the sealing ring plays a decisive role in its performance. Nitrile rubber sealing rings have low cost and strong universality, suitable for media such as petroleum hydraulic oil. The working temperature range is -40~120 ℃, but they will fail in polar solvents. Hydrogenated nitrile rubber sealing rings have excellent corrosion resistance, tear resistance, and compression deformation resistance. They are commonly used in washing machinery and automotive engine systems, with a working temperature of -40~150 ℃, but are not suitable for alcohol solutions. Silicone rubber sealing rings have excellent heat resistance, cold resistance, ozone resistance, and atmospheric aging resistance, as well as good insulation properties. They are commonly used in household appliances, with a working temperature of -55~250 ℃, but have weak tensile strength and are not resistant to oil. Fluorine rubber sealing rings have excellent high temperature resistance, weather resistance, ozone resistance, and chemical resistance, and are suitable for diesel engines, chemical plants, etc. The working temperature is generally between -20~250 ℃, but the cold resistance is insufficient. Different materials have their own lengths, and the appropriate sealing ring must be selected based on the actual working conditions of the equipment, such as working environment, contact medium, temperature, and pressure.

Sealing performance establishes the effectiveness of use

The ideal sealing ring should have excellent elasticity and resilience, which can quickly recover under pressure and tightly fit the sealing surface. At the same time, it is necessary to have appropriate mechanical strength, including expansion strength, elongation, and tear resistance, to cope with stress during work. Its performance should be stable, not easily swollen in contact with the medium, have a small thermal shrinkage effect, and ensure dimensional stability. In addition, high-quality sealing rings should be easy to process and shape, able to maintain precise dimensions, not corrode contact surfaces, and not contaminate the medium. For example, the sealing ring in a high-pressure hydraulic system must withstand high pressure and maintain a good sealing state to prevent oil leakage; The sealing ring in chemical pipelines needs to resist the erosion of chemical media.

Lubrication and maintenance extend the service life

Proper lubrication can greatly reduce the friction between the sealing ring and the mating components, reduce wear, and extend their service life. During installation, applying the appropriate lubricant can form a protective film at the moment of startup, reducing initial wear. In daily maintenance, regularly check the appearance of the sealing ring to see if there are signs of wear, deformation, or aging, and promptly clean up surrounding impurities to prevent them from entering the sealing area and damaging the seal. For sealing rings that work in harsh environments such as high temperature, high pressure, and strong corrosion for a long time, the inspection cycle should be shortened and replaced in advance if necessary to maintain their good performance and ensure long-term stable operation of the equipment.

Although the sealing ring is small, it plays an irreplaceable key role in the operation of the equipment. By selecting materials reasonably, paying attention to sealing performance, and doing a good job in lubrication and maintenance, its efficiency can be fully utilized to ensure the stable operation of the equipment.