Blackmer Launches Behind-the-Rotor Seal Option for G Series Internal Gear Pumps

Blackmer Launches Behind-the-Rotor Seal Option for G Series Internal Gear Pumps
6 Aug 2026  |
Blackmer, a brand of PSG, a Dover company, and a global leader in rotating pumps and reciprocating compressor technologies, today announced the launch of a behind-the-rotor seal option for its Blackmer® G Series Internal Gear Pumps. This seal design delivers improved protection and performance when handling abrasive materials across a wide range of applications.

Engineered for serviceability and longevity, the behind-the-rotor seal option is designed to prevent process fluids and abrasive materials from contacting drive components of the G Series. This results in reduced wear, simplified maintenance and increased uptime for operators.

“The introduction of the behind-the-rotor seal underscores our ongoing commitment to providing reliable pump technology and enhances the trusted performance of the G Series,” said Joe Parzych, Product Manager of Blackmer Gear. “By protecting critical internal components, this new seal option helps customers minimize downtime and reduce total cost of ownership.”

The behind-the-rotor seal option includes the following key features:

  • Available in Type 1 or Type 8 seal configurations for greater flexibility
  • Supports the use of a lower-cost bronze bushing when pumping abrasive materials
  • Ideal for industries handling starches, inks, pulp, resins and adhesives
  • Initially available on G3-2 through G3-69 cast iron models, with additional materials planned for future release

“By adding the behind-the-rotor seal option, operators can further expand on the versatility and dependability of their G Series Pumps,” said Parzych. “It’s a simple, high-impact solution for customers who want to maximize both the performance and longevity of their internal gear pumps.”

Blackmer is a brand of PSG, a Dover company. For more information on PSG, please visit psgdover.com.

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Blackmer® is the leading global provider of innovative, high-quality sliding vane, centrifugal, screw and regenerative turbine pump, and reciprocating gas compressor technologies for the safe transfer of liquids and gases. Since 1903, Blackmer pumps and compressors...