Knowledge

Learn how to identify the correct mechanical seal by cross-checking pump data, old seal components, critical dimensions, reference numbers and operating conditions.

Select a Lowara replacement mechanical seal from the pump identity, the removed seal, and the actual duty together. Starting with

Shaft runout and misalignment often hide behind a familiar maintenance story: the seal is replaced, the pump restarts, and the

Cartridge seal installation looks simple because the seal arrives as a preassembled unit. That convenience can also create false confidence.

Pump cavitation and vibration can destroy a mechanical seal even when the seal has the correct size, materials, and installation

Double mechanical seals use two sealing interfaces to create an additional controlled zone between the process and atmosphere. However, not

API 682 seal flush plans help control the environment around mechanical seal faces. Plan 11, Plan 21, and Plan 23

When a mechanical seal runs dry, the thin liquid film between its rotating and stationary faces disappears or becomes unstable.

Compare NBR, EPDM, FKM and FFKM for mechanical seal O-rings and elastomers by fluid compatibility, temperature resistance and application requirements.

Mechanical seal vs packing decisions should begin with leakage limits, pump duty, maintenance resources, and total operating cost. Both methods