... ROHS, ect. Description of Good Quality Car Rear Wheel Hub Oil Seal for Aging Resistant:1. Materials: ... VITON, FKM, FPM, etc. 2. Characteristics: good physical and chemical properties wheel hub oil seal. 3. ... . 10. QC/QA: we have strict quality control and assurance systems, have 30 QC technicians ... includes CNC machines, EDM machines, and wire cutting machine. 2. The molds can be compression, injection ...