Last updated: 19/09/2025 13:02:58
KLÜBER SUMMIT RHT 68 (DRUM: 200 LTR)
Product Code
- Product group:
- 683
- Product number:
- 210205
Product information
Klüber Summit RHT 68 is chemically miscible with mineral oils, alkylbenzenes, and PAO-based refrigerator oils. They may therefore be used to top up such oil fills. The full performance capacity of Klüber Summit RHT 68 and Klüber Summit RHT 100 will only come to bear with a complete change of the oil and filters. Klüber Summit RHT 68 is neutral towards most chloroprene and neoprene seals typically used in refrigeration equipment. Klüber Summit RHT oils are less soluble than naphthene-based mineral oils, which reduces the influence on the swelling behaviour of the seals to a minimum. In some rare cases, a changeover from naphthene-based refrigerator oils to a Klüber Summit RHT oil may lead to leakages as the oil change may cause seals to shrink to their original size. In our experience, such leakages are very small and reversible, depending on the runtime and the maintenance condition of the refrigerator.
Features
- Chemically miscible with mineral oils, alkylbenzenes, and PAO-based refrigerator oils
- Suitable for top-up applications; full performance achieved after complete oil and filter change
- Neutral towards most chloroprene and neoprene seals used in refrigeration systems
- Lower solubility than naphthene-based mineral oils, minimizing seal swelling
- Potential for minor, reversible leakage during oil change due to seal shrinkage
- Proven performance in refrigeration systems with varying runtime and maintenance conditions
Benefits
- Excellent flow characteristics at low temperatures
- Lower maintenance costs due to long oil change intervals and reduced oil consumption
- Low solubility in ammonia
- 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
Specification
General
| Invent Hazard Material (IMO/EU) classification | C-3 |
|---|
Physical properties
| Appearance | clear |
|---|---|
| Colour | clear |
| Density at 20°C [g/cm³] | ~ 0.86 g/cm³ |
| Kinematic viscosity (without solvent), DIN 51562 pt 01/ASTM D-445/ASTM D 7042, 40°C [mm²/s] | ~ 8.8 mm²/s |
| Kinematic viscosity of the base oil, DIN 51562 pt. 01/ASTM D-445/ASTM D 7042, 100 °C [mm²/s] | ~ 68 mm²/s |
Dimensions/Weight
| Packing Size | 200LTR |
|---|
Performance data
| Flash point, DIN EN ISO 2592, Cleveland, open-cup apparatus [°C] | ≥ 240 °C |
|---|---|
| Pour point, DIN ISO 3016 [°C] | ≤ -39 °C |
Safety Data Sheet (SDS)
Documents
Directions for use
Drain old oil from the whole circuit of the refrigeration compressor while still warm. We recommend replacing all oil filters and oil separators and completely drain oil traps of the refrigeration circuit. Then refill the compressor with Klüber Summit RHT 68 .