Summit RHT 68 - Ammonia refrigeration compressor lubricant

Available from MUSTONLUBE

Product Details

Summit RHT-68 and Summit RHT-100 are ammonia refrigeration compressor oils on the basis of highly purified, hydrogenated mineral oils.

Your benefits at a glance
Low solubility in ammonia
Excellent flow characteristics at low temperatures
Lower maintenance costs due to long oil change intervals and reduced oil consumption
Easier changeover due to neutral behaviour towards seals
High refrigeration efficiency due to reduced oil deposits
Lower operating costs due to long filter and oil separator lifetimes
Lower oil carryover than with naphthene-based mineral oils

As Summit RHT 68 and Summit RHT 100 are highly refined oils, oil carryover is considerably lower than with conventional mineral oils. This leads to lower oil consumption.


The viscosity of Summit RHT 68 and Summit RHT 100 remains stable at a level since they contain only a small amount of highly volatile hydrocarbons. The oils’ high evaporation stability prevents viscosity increases and thus premature oil change.

The hydrogenated base oil is chemically stable and was designed in particular to withstand the influence of ammonia.

While conventional mineral oils tend to blacken when reacting with ammonia, and deposits tend to form in the refrigeration circuit, this is not the case with Summit RHT oils.

Oil change intervals can be extended significantly. Due to their low solubility in ammonia, Summit RHT oils contribute to refrigeration plant efficiency.

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