Stenso - Hovedkatalog 2019

3.4. Temperature Temperature at the sealing lip is the temperature of the medium due to frictional heat. The higher the actual service temperature, the faster the ageing process of the elastomer which also influences the function of the sealing lip and shaft surface. Frictional heat depends on peripheral velocity, pre-stressing on the sealing lip, surface finish of shaft, lubricant medium etc. The graph below shows allowable values with reference to various materials. 305 Shaft diameter (mm) Peripheral Velocity Radial Lip Seal