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Wheeler-Rex 29950 pump rebuild kit with four O-rings

Wheeler-Rex

Wheeler-Rex 29950 Pump Rebuild Kit for 6GDU9

SKU CH-EMZZ-8QCCW

A pump rebuild kit with four O-rings rated for 870 psi, compatible with hydrostatic test pump model 29900

  • TypeDrain Components
  • MaterialHAWA
  • Restores pump performance with genuine Wheeler-Rex parts
  • Rated for 870 psi maximum operating pressure
  • Includes four O-rings for a complete seal replacement
  • Designed specifically for the 6GDU9 hydrostatic test pump
  • Matches manufacturer model 29900 for exact fit

Purpose-built rebuild kit

Wheeler-Rex 29950 is a pump repair kit designed for the 6GDU9 hydrostatic test pump. It supplies the internal seals required to restore pressure integrity on compatible equipment. Maintenance teams and plumbing professionals use it to keep test pumps operating at rated performance.

Pressure-rated sealing components

The kit includes four O-rings manufactured from HAWA material rated for a maximum operating pressure of 870 psi. These seals replace worn items that cause pressure loss or fluid bypass during hydrostatic testing. Proper installation returns the pump to leak-free operation without additional modification.

Direct-fit replacement parts

The bundled O-rings match the original specifications for Wheeler-Rex model 29900 and Grainger part 6GDU9. No extra hardware, tools or lubricants are included in the package. Users must supply their own assembly grease and hand tools to complete the rebuild.

Highlights

  • Restores pump performance with genuine Wheeler-Rex parts
  • Rated for 870 psi maximum operating pressure
  • Includes four O-rings for a complete seal replacement
  • Designed specifically for the 6GDU9 hydrostatic test pump
  • Matches manufacturer model 29900 for exact fit

Specifications

TypeDrain Components
MaterialHAWA
BrandWheeler-Rex
Model29950

Questions about this item

How do I install the Wheeler-Rex 29950 rebuild kit on my 6GDU9 hydrostatic test pump, and which step is commonly missed?

Disassemble the pump, remove all old seals, clean every groove, install the four included O-rings into their exact seats, then reassemble; the step most often missed is thoroughly cleaning the O-ring grooves before fitting the new rings.

What maintenance will the Wheeler-Rex 29950 kit require after installation, and when should I plan to replace its components?

Inspect the four O-rings for wear or leakage after each major hydrostatic test job; replace the full kit whenever pressure drops below the 870 psi maximum rating or at the start of every new testing season.

What is the first performance limit I will hit when running the Wheeler-Rex 29950 kit continuously on a 29900-model pump?

The 870 psi maximum operating pressure is the primary limit; sustained runs at or near this pressure will accelerate O-ring fatigue and cause pressure loss before any other component fails.

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