Tandem seals with bellows

Application 

In pumps and units, sealed with petroleum products, liquefied hydrocarbon gases, fluids containing harmful chemical substances and resolving gums ones (those, which resolve gums). Used in cases of complicated cooling fluid supply.   

Features

• Leakage of buffer fluid to the medium is excluded.
• The first (sealed medium side) seal face functions at differential pressure between medium and buffer fluid, and the second (atmosphere side) - at differential pressure between buffer fluid and atmosphere.
• Buffer fluid is chemically non-corrosive, non-toxic liquid compatible with sealed medium.
• Absence of rubber sealing rings allows using this type seal in aggressive, active and hot media.
• Manifold is done in compliance with API 682 standard: Plan 52.
• There is no need to press buffer fluid with gas.