The shaft surface of the floating seal ring is dirty, dust particles adhere to the lip of the floating seal ring, and the shaft surface is worn; the casting sand is invaded and the shaft surface is worn; the external dust is invaded, and the shaft surface is worn; Seal ring lip, floating seal ring wear shaft surface to ensure the cleanliness of shaft surface and floating seal ring; in order to prevent external dust from invading, dustproof device is installed; high-quality lubricating oil is used instead.

In order to ensure the cleanliness of the grease, it is important to replace the grease regularly to remove impurities or other harmful impurities accumulated in the grease in time. Therefore, from the structural design, the oil injection hole and the oil drain hole can be reserved. In order to prevent the temperature of the sealing cavity of the floating seal ring from increasing, it is sometimes important to open a vent hole.

The existence of "critical oil film" at the edge of the floating seal ring is very beneficial to reduce the wear of the edge of the floating seal ring and increase the life of the floating seal ring. Especially when several floating seal rings are used in parallel, special attention should be paid to the lubricant. Otherwise, dry friction will be formed due to lack of oil, causing the floating seal ring to be burned out.