14 December 2010

Introducing the Coldores® diamond shaft seal

Over the last four years, RM Support has examined over 100 broken shaft seals. The majority of them were damaged by thermal or chemical attack as a result of overheating. Read about this research here. 

The lifespan of a shaft seal is also much shorter now than in years past. In the 1980s and early 90s a mechanical shaft seal could serve from five up to ten years. Today, they last only one year. Keep in mind that the design of a shaft seal did not change at all over that time.

It is obvious that there is a need for a more reliable solution. As a developer of a double shaft seal, RM Support has experience in innovative shaft seal solutions. Thus, we decided to design a modern, single shaft seal with a higher heat resistance.

To avoid damage, the modern shaft seal must to be able to:

  1. o Handle changes in temperature
  1. o Handle a wider range of pressures
  1. o Generate less heat to avoid overheating
  1. o Handle changes in drive speed
  1. o Handle a wide range of refrigerants and oils
  1. o Mount easily
  1. o Be environmentally friendly (no use of heavy metals or antimony)

The heat resistance of the new shaft seal comes from the diamond layers. These layers provide a hardened surface with a unique topography for increased interfacial lubrication.  The diamond shaft seal produces 60 percent less heat than the typical shaft seal. Friction is reduced, while the sealing capacity remains the same. We called it the Coldores diamond shaft seal.

The Coldores® shaft seal is a cartridge-type seal, making it possible to replace the worn parts of the seal rather than buying a whole new seal. The other characteristics are: easy mounting, low friction and long life materials.

Coldores® diamond seals can be completely recycled by our RM seal-change service, which is similar to our double seal with a pre-warning system

Read more about the Coldores® diamond shaft seal on its website: www.coldores.com

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