Rotor

The rotating assembly in a positive displacement pump, typically driven directly by the motor or other driver.

Stuffing Box

For pumps, this is hollow space where the rotating shaft enters the stationary pump housing. While the term originated from shaft packing that was “stuffed” around the shaft to create a seal, today a pump’s stuffing box is often fitted with a mechanical seal, lip seal, or O-Pro® seal instead of packing.

U-Plus™ Bracket

A Viking Pump bracket engineered to accommodate various seal options including O-Pro® Guard seals, single component seals, cartridge lip seals, cartridge single and double mechanical seals. It also includes stainless steel window guards for protection from rotating parts.