Chemical name:

polyalkylene glycol (PAG)


specialty products, lubricants & functional fluids

Markets and applications:

lubricants and functional fluids, brake fluids, compressor oils, hydraulic fluids, industrial lubricants


functional fluids, hydraulic fluids, lubricants, industry gear lubricants, textile lubricants


PAG , water insoluble


PCC Rokita SA Polyols Business Unit

CAS No.:



Rokolub 68 is a polyether polyol obtained by means of the starter propoxylation. The product has a form of homogenous, clear liquid at the temperature of 25°C. This polyol is water insoluble. During its manufacturing process Rokolub 68 BHT antioxidants are added. The kinematic viscosity of Rokolub 68 (ISO VG 68) at the temperature 40°C ranges from 60 to 70 cSt. The product is marked by viscosity index is high (viscosity index i VI>150), which ensures good lubricity of the systems without major load, not requiring application of refining additives. 

Group V base stock commonly used based on its wide range and easy application. It is used, a.o.,  PAG type synthetic lubricating oil.

Main application advantages of Rokolub 68:

  • Cleanliness of the machines and equipment lubricated based on the reduced tendency for sludge forming;
  • Significantly reduced tendency for sludge forming enables maintaining cleanliness of the machines and equipment lubricated;
  • Possibility of using the polyol as a lubricant for equipment operating under variable conditions, including at low temperatures (pour point Tp<-36°C);
  • Compatibility of Rokolub 68 with NBR and EPDM elastomers;


Most frequent applications of Rokolub 68:

  • Lubricating oil for gas compressors and refrigeration compressors;
  • Component for production of service fluids and metal working fluids;
  • Hydraulic fluids;
  • Anti-foaming agents;

Products made based on this polyol are of high, repeatable quality, and very good parameters, based on the optimally developed manufacturing process. 

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Properties and applications:

  • Product with high viscosity index, which facilitates its high quality;
  • Polyol with good low temperature properties, which makes it suitable for application in diverse weather conditions;
  • Product  compatible with NBR and EPDM elastomers, which broadens its application range;
  • Product marked by high cleanliness of equipment and machines during use, as well as reduced tendency for deposit and sludge forming;
  • Used for production of oils dedicated for gas compressors and refrigeration compressors;
  • Production used in industry as a component for production of  service fluids and metalworking fluids;

Alternative names:

Show alternative names
polypropylene glycol (Hide)


PAG polyalkylene glycol synthetic lubricants base stock high viscosity index hypercompressor oil metal working fluids MWF hydraulic fluids lubricants
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