Figure 2 — In the K-Cartridge-brand cement pump seal assembly, a Filled Seal prevents loss of the pressurized seal lubricant to atmosphere. The rotationally driven pumping action of a High Film Seal produces a controlled flow that pressurizes, flushes, and lubricates a pair of lip-type barrier seals that face and contain the cement. The rotating fan helps to dissipate speed-related seal-generated heat.
{}