The compression sealing system, also called gland sealing, allows sealing some type of element (such as: temperature sensor, cable, conductor, pipe, pipe, fiber optic cable) when said element must pass through a wall that retains a gas, liquid or contaminating material. A compression sealing system may have the following objectives:

Unlike an epoxy seal or rubber washer, a compression sealing system uses mechanical components and axial force to compress a soft seal into a housing, creating a seal. In contrast, an epoxy seal is formed by pouring a compound into a mold or reservoir to generate a seal.

Typical uses include pressure vessels, autoclaves, storage tanks, pipes, ovens, or any other device in which cables or sensors must pass from the inside to the outside of a container or wall on which there are different pressures on each side or contaminating media.