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Flowserve-Durametallic-Pusher Seals - RA

Pusher Seals - RA

BRAND: Durametallic

A single balanced seal designed to mount outside the seal chamber. No wetted metal parts (RA-C) reduce seal costs for highly corrosive services, especially on non-metallic pumps. Installs easily on the outside of the seal chamber and is suitable for metallic and nonmetallic equipment such as plastic, glass, and lined designs.


  • Power
  • Chemical
  • Water
  • General Industry

industry sectors

  • Nuclear
  • Conventional Steam
  • Geothermal
  • Combined Cycle
  • Concentrated Solar Power
  • Biomass and MSW
  • Basic
  • Specialty
  • Biofuels
  • Pharmaceutical
  • Water
  • Waste Water
  • Agriculture
  • Water Management
  • Pulp & Paper
  • Mining
  • Steel & Primary Metals
  • Food & Beverage
  • Corn Wet Milling & Ethanol
  • Other Industries
Operating Parameters

Up to 400 psi (27.6 bar)
Up to 400°F (204°C)
Up to 75 fps (23 m/s)
0.500 to 5.000 inch
(13 to 127 mm)

Features & Benefits
  • Seal faces and elastomers are the only wetted components and are readily available in a wide range of materials for proper corrosion resistance.
  • RA seal uses a composite rotor with an economical seal face insert. RA-C seal uses a solid ceramic rotor with a protective PTFE shroud.
  • Drive collar, springs, and drive pins are isolated from the product to avoid the need for expensive alloys in highly corrosive services.


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