The role of the oil seal is generally to isolate the components that need to be lubricated from the output components in the transmission components, so as not to let the lubricant leak.
The skeleton is like the steel bar in the concrete member, which plays a role of strengthening and makes the oil seal maintain the shape and tension.
According to the structure, it can be divided into single lip skeleton oil seal and double lip skeleton oil seal. The secondary lip of the double lip skeleton oil seal plays a dustproof role, preventing outside dust and impurities from entering the machine.
