R744 Compressor Shaft Seal
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Application: Mobile Air Conditioning

Partners: KACO GmbH

Contacts:

Markus Schwerdtfeger, Germany
R744 Compressor Shaft Seal
Description

The German expert for dynamic seals has designed a compressor shaft seal for high-pressure R744 vehicle air conditioning, ensuring lowest leakage rates while driving and during long standstill times.

Advantages
  • Leak-tight sealing of CO2 compressor shafts
  • passed all necessary endurance and leakage tests with excellent results
  • Lowest levels of static leakage in new condition and during long standstill times: even at long standstill times of 700 hours the average leakage from an R744 compressor equipped with KACO’s shaft seal is less than 5 g/year (VDA requirement: 15 g/year)
  • Lowest level of static leakage after usage during long standstill times
  • Lowest level of dynamic leakage at all relevant operation conditions 
  • High-pressure resistance: resistant to pressures of up to 90 bar
  • High temperature resistance: reliable operation at temperatures of 54°C
  • Reliability: at all operating conditions the shaft seal works reliably
  • Legal compliance: ensures that CO2 compressors already now comply with international leakage requirements and current technical specifications
  • Long-term durability
  • Low friction loss 
  • Future-proof: suitable for CO2 MAC used in heat pump mode and especially suited for electric and hybrid vehicles
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