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Good Self Lubrication High Density Carbon Vane for Pump. High Density & Strength: Bulk density 1.95-2.1g/cm3, compressive strength 100-120MPa, bending strength 50-60MPa. Self-Lubrication Feature: No oil required, widely used in dry running impeller compressors and vacuum pumps. Chemical Resistance: High carbon content (99%) ensures excellent chemical resistance and thermal stability. OEM/ODM Support: Full customization, minor customization, and flexible customization from samples/designs.