METHOD OF SEALING Russian patent published in 2000 - IPC

FIELD: sealing engineering. SUBSTANCE: method is designed for sealing of vessels and units mainly for oil and oil products. Method consists in manufacture of sealing device with regulated clearance and in cooling of oil or oil products in sealing device clearance to abnormal lowering of viscosity with formation of sedimentary layers of product on operating surfaces of seal. These layers possess higher viscosity and high level of viscous flow activation energy. Sealing layers of sedimentary product of higher viscosity serve as cup providing for higher tightness and durability of seal due to absence of dry friction on conjugated members. Abnormal reduction of viscosity between sedimentary layers of product prevents supernormal mechanical friction losses and it does not reduce unit efficiency. EFFECT: enhanced reliability of seals. 1 dwg