The ASI Model 800 provides a zero-emissions, single seal solution to many problematic dry-run and environmentally sensitive service requirements. The Model 800’s design directs gas pressure through the stationary seat and positions it between the seal faces. The dual-channel rotary face delivers complete seal face “lift-off” while engaging two active gas seals on one face, eliminating face contact (and ensuing heat and wear). Additionally, the Model 800’s shortened seal operating length allows it to operate at higher operating pressures while accommodating a wide range of service equipment.