Double mechanical seals are intended to guarantee maximum sealing safety. These seals for all intents and purposes dispose of leakage of the fluid or gas being dealt with pumps or mixers. A double mechanical seal has two essential seals with a barrier or buffer fluid area in between. Each primary seal typically consists of a softer, narrower stationary face accompanied by a harder, more extensive rotating face. This arrangement enables the softer seal to wear while maintaining the integrity of the harder faced seal during service.