Double end face mechanical seal

Double face mechanical seal has two end face seal, if the first level seal failure, the two seal can still be sealed to prevent leakage. The general double end face seal is required to supply the sealing liquid system, seal, lubrication and cooling are introduced into the seal cavity, and the utility model is used for circulating cooling. The sealing liquid can not only improve the mechanical seal working environment, but also can be used as an important detection method for the failure of the first grade sealing surface.