VG1540040022A Skeleton oil seal SINOTRUK HOWO Engine valve chamber cover D10 Euro 3 Four valve

     Skeleton oil seal is a typical representative of oil seal, generally speaking, the oil seal refers to the skeleton oil seal. The function of the oil seal is to isolate the lubricating parts in the transmission parts from the external environment, so as not to let the lubricating oil leak. The skeleton, like the steel bars inside the concrete member, strengthens and enables the oil seal to hold its shape and tension. According to the structural form can be divided into single lip skeleton oil seal and double lip skeleton oil seal. The double lip skeleton oil seal plays a dust-proof role to prevent dust and impurities from entering the machine. According to the skeleton type, it can be divided into inner skeleton oil seal, exposed skeleton oil seal and assembled oil seal. According to the working conditions, it can be divided into rotating skeleton oil seal and round-trip skeleton oil seal.