Agitator seals optimized for side- and bottom-entry drives
With its recently upgraded design, HSMR34 is a double-acting liquid-lubricated mechanical seal (photo) that is approved for use in all explosive environments according to the ATEX Directive. The standard material used is silicon carbide (SiC) in a hard/hard pairing. Especially in machines with a side or bottom entry drive, the medium is pressed against the sealing gap, posing unique challenges for the seal design, and increasing the risk of buildup. To solve this problem, HSMR34 mechanical seals are equipped with a solid counter-ring that extends far into the product. In addition to excellent heat dissipation, this also has another advantage — the rotation of the counter-ring produces centrifugal forces that keep material from accumulating in the sealing gap. An O-ring integrated into the solid counter-ring separates the shaft from the product, ensuring that the shaft sleeve has no contact with the product and opening up new options for shaft sleeve materials. Special Outdoor Area 10 Booth A7 — EagleBurgmann Germany GmbH & Co. KG, Wolfratshausen, Germany