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GV
Bore surface roughness - In industries like automotive, aerospace, petrochemical, and power generation, where high temperatures and harsh environments are the norm, high temp oil seals are a must-have. For instance, in jet engines, these seals prevent oil leaks that could potentially damage turbine blades or compromise flight safety. In oil refineries, they protect expensive equipment from corrosion caused by exposure to hot oils and chemicals.
The sealing effect is achieved by manufacturing a smaller inside diameter than the required shaft size, which preloads the sealing lip. A garter spring is often used to ensure a constant force on the shaft.
If these criteria are met, damage of the machine can be reduced, the time needed to replace the oil seals when performing repairs can be shortened, and the machine can be used for a longer period of time.
Name Type
(type code) Shape Features

• Lubricating oil
• Rotational speed
• Shaft diameter, etc.
Spring The spring supplements the tightening force (i.e., the lip radial load) to ensure enhanced sealing performance and tight contact between the shaft and the sealing edge.The spring also prevents the deterioration of main lip sealing performance caused by high heat or other such factors.