The reasons for the whitening phenomenon of rubber seals may be as follows:

The temperature of the grinding tool is too low or the vulcanization time is insufficient: Rubber needs appropriate temperature and time to complete the reaction during the vulcanization process. If the temperature of the grinding tool is too low or the vulcanization time is insufficient, the rubber may not be fully vulcanized, resulting in whitening.

The dosage of a certain compound exceeds its solubility in the rubber: The compound in the rubber can dissolve in the rubber within a certain dosage range, but if the dosage is too much and exceeds its solubility in the rubber, it will This causes the compounding agent to precipitate in the rubber, forming a white substance.

Uneven dispersion of the accelerator: The accelerator plays a role in accelerating the reaction in the rubber, but if the accelerator is unevenly dispersed, it may result in excess in some areas and insufficient in some areas, causing white spots or white fog to appear on the rubber surface.

Improvement measures include:

Increase the temperature of the grinding tool or extend the vulcanization time: ensure that the rubber can be fully vulcanized to avoid whitening.

Adjust the rubber compound formula: Reasonably control the dosage of the compounding agent to avoid exceeding its solubility in the rubber compound.

The rubber compound must be mixed evenly: ensure that additives such as accelerators can be evenly dispersed in the rubber to avoid uneven dispersion.