|Mechanical Seals . Net|
SPECIFYING MECHANICAL SEALSMechanical seals have become increasingly popular in industry. Many companies develop a set of mechanical seal specifications to make it easier for their people to select one or more seals for an application. The lack of a company specification can cause problems with inventory, installation and interchangeability of seals. Plants are accepting seal components with unidentified materials, making troubleshooting an impossible task for them.
A good company specification for mechanical seals will include the following:
-- Mechanical Seal materials with the widest range of chemical compatibility.
-- Mechanical Seals that are easy to install.
-- Mechanical Seals with features that make seal repair easy and low cost.
-- Mechanical Seals that require the least amount of inventory and spare parts.
-- Mechanical Seals that operate over a wide range of temperature, pressure and speed, and
-- Mechanical Seal designs that allow the easy conversion of packed pumps to mechanical seals.
A typical plant will use some or perhaps all of the following five types of mechanical seals:
• A single cartridge-mounted balanced seal.
• A dual cartridge-mounted balanced seal.
• A balanced outside seal for low pressure applications.
• A balanced seal installed inside the stuffing box, and