Choosing the right mechanical seal for a pump helps reduce leakage, increase equipment lifespan, and save maintenance costs. Choosing incorrectly can cause the seal to fail after just a few days. Before placing an order, you should consider the following five factors.
It is necessary to know the name and concentration of the medium, its corrosiveness, toxicity, flammability, viscosity, crystallization ability, and solid particle content. The medium determines the material of the seal face, gasket, metal, and even the configuration of a single or double seal. More hazardous media require a tighter configuration.
It is necessary to grasp the temperature and pressure in the seal chamber, not just in the pipeline. High temperatures limit the material of the gasket and easily cause evaporation at the seal face, requiring cooling or the use of metal bellows seals. High pressure deforms the seal face and requires a balanced seal.
In the oil and gas and petrochemical industries, API 682 is often applied. Emission limit requirements will guide the selection of double seals or seals with a gas barrier. It is necessary to determine the applicable regulations early on.
Cartridge-type seals help reduce installation errors. Split seals are suitable for large equipment that is difficult to disassemble. It is necessary to consider the maintenance personnel, available spare parts, and allowed downtime.
Please provide the pump drawing or full specifications to the supplier for advice on the seal configuration, material, and auxiliary diagram. Contact SNS-VN for support.