When the operating medium contains some granules, you can squirt lotion or lubricant to clean the seal face, making sure a reliable seal.

• 当输送的介质不洁或含有少量颗粒时，为保护密封面，确保达到可靠的密封，还可给这一装置注射相应的清洗剂或润滑剂对密封面进行清洗。