Flygt 3127 pump mechanical seal

Flygt 3127 is interchangeable with 3126-181 type

Background Knowledge：

How chemical mechanical seals leak due to chemical corrosion.

When the chemical mechanical seal is in contact with the corrosive medium, the corrosion of the sealing surface will occur, and on more serious cases severe corrosion points and pitting corrosion on the contact surface will take place.The corrosion on the metal grain boundary will further intrude into the metal,which will increase the damage, and even cause fracture in severe cases. Therefore, corrosion has a great impact  on chemical mechanical seals.

Usually, compared with the main engine parts, the mechanical seals are not only smaller, but also more precise. Therefore,the seals need to choose materials that are more resistant to corrosion than that of the main engine.

In order to reduce the impact of corrosion on the mechanical seals as much as possible, in the presence of strong corrosive fluids, double mechanical seals are used. Since the number of contact parts between double seals and process fluid is relatively small, the use of double seals reduces chemical corrosion effects.