Mechanical face seals are specially designed to seal the lubricant, excluding contamination in rotary applications in the most adverse conditions such as mud, rocks, sand, water, high and low temperatures, etc.

Mechanical face seals or heavy duty seals are specially designed for rotary applications in critical environments.

The seals are composed of two metal rings, one static and one rotating, with high hardness that use the contact between reflective surfaces to ensure static and dynamic sealing; these are compressed and centered by two tension rings made of rubber resistant to oil and wear.

Rotational speed, type of lubricant, operating temperature and pressure are factors to consider when determining the load on the seal.