The application of PTFE sealing ring oil seal is not uncommon, but how do we eliminate the seal when there is a problem with the oil seal? What details need to be paid attention to when checking? Let us learn together.

The first step before disassembly is to check the use of the oil seal. The inspection content includes "leakage" (a small amount of oil spills, oil leaks in the sealed area, and a large number of oil spills), "external seal areas" (clean, dust, sludge), and "clean up" inspection seal areas" (inspect the assembly The chamfering of the hole, the loosening of the oil seal hole, the deformation of the oil seal frame, the eccentric shaft hole, the tilt of the oil seal, the improper installation of the oil seal, whether there are impurities such as paint on the oil seal, whether there are other). Rotate the shaft when the situation permits, and check the axial direction The amount of movement and jitter.

If the specific oil leakage location cannot be determined after the above inspection, we can inject the "ultraviolet dye" into the cavity or spray the "white powder" sealing area, run for 15 minutes, and then check the oil leakage ultraviolet or visible light, and then we make a mark of 12 The oil seal at the o'clock position, and then remove the oil seal, check for defects, such as cracks "assembly hole chamfering", and then carefully check whether there are "assembly holes too rough", "holes," shaft discoloration" in the use area of the oil package, "Shaft too dirty", "shaft damage", "shaft ablation", "shaft corrosion", "dirty media" or other defects.

The last step is to check the oil seal to see if the main lip is normal. The more common ones are "damage", "softening", "hardening", "impurity" and "wear condition"; then when checking the outer diameter, the axial tension or rubber material is damaged or normal; whether the spring is installed correctly or has signs of shedding , Whether the joint is disconnected or corroded, etc.

These are the steps we are taking to check the failure of the PTFE sealing oil seal.