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克魯勃UNIMOLY GL 82 克魯勃UNIMOLY GL 82 克魯勃UNIMOLY GL 82 Wherever seals operate under dynamic load, leakage of the medium may occur. If a lubricant film fails to form between the elastomer seal and the shaft, or if an existing lubricant film ruptures, friction between the moving components may lead to a sharp rise in temperature and consequently failure of the sealing materials and increased wear (shaft under-cut). A lubricant that is not up to the task can also affect the seal material, leading to leakage and system breakdown.