
wheel hub seal. This noise is caused by the lack of lubrication in the wheel hub, which can lead to metal-on-metal contact and damage.
Oil seals are typically made of rubber or synthetic materials that are resistant to oil, heat, and pressure. They are designed to withstand the harsh conditions within an engine or machinery, such as high temperatures and varying levels of pressure. The seal is usually placed in a housing or a groove in order to effectively seal the gap between two moving parts.
The operational process of a natural gas distribution station involves several critical steps. Initially, natural gas enters the station through high-pressure pipelines. Here, it undergoes a pressure reduction process using pressure regulators, which play a key role in maintaining operational safety. After the pressure is reduced, the gas may be treated to remove impurities such as water, dust, and other contaminants. This purification process is crucial to ensure that the gas supplied to consumers is of high quality and safe for use.