Description
The Castrol Aircol SW range of synthetic refrigeration lubricants are formulated from polyolester base stocks.
Application
They are specifically designed for use with refrigeration systems using environmentally friendly HFC refrigerants, in particular R134a.
Features and Benefits
The synthetic base stocks used in the Aircol SW range are fully miscible with HFCs, in particular R134a, even at temperatures well below the minimum likely to be encountered in service.
The Aircol SW grades have been formulated to enhance hydrolytic stability, load carrying and inhibition against copper plating. They are wax free and hence have very low pour points. This ensures the evaporator remains clean (consquent efficient heat transfer) and reduces the risk of pipe blockages.
Technical Data
|
Name |
Method |
Units |
Aircol
SW 32 |
Aircol
SW 46 |
Aircol
SW 68 |
Aircol SW
100 |
Aircol
SW 170 |
Aircol SW
220 |
|
Density at 20°C |
ASTM D1298 |
g/ml |
0.977 |
0.98 |
0.98 |
0.969 |
0.968 |
0.975 |
| Kinematic
Viscosity at 40°C |
ASTM D445 | mm²/
s |
32 |
46 |
68 |
100 |
170 |
220 |
| Kinematic
Viscosity at 100°C |
ASTM D445 | mm²/
s |
5.4 |
6.9 |
8.5 |
11.4 |
17 |
19 |
| Pour Point | ASTM D97 | °C | -46 | -42 | -39 | -30 | -27 | -27 |
| Closed Flash
Point |
ASTM D93 |
°C |
233 |
235 |
245 |
235 |
235 |
250 |
The above figures are typical of those obtained with normal production tolerance and do not constitute a specification.