Stuffing box seals are the most common type of pump rotor seals because they are adjustable and periodically restorable assemblies during operation. Based on the study of physical processes. a sealing mechanism model of the stuffing box seal is formed as a combination of two successive hydraulic resistances: a pre-switch resistance. which is similar to a slotted choke. https://herbsdailyes.shop/product-category/sharps-collectors-brackets-and-cabinets/