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Technical Data
14
P1700040
4.5 Lubrication Data
Welch Directorr
™ Premium vacuum oil is a triple-distilled hydrocarbon oil using severely hydro treated
base stock. The oil is designed to resist breakdown at higher RPMs and operating temperatures of
direct-drive vacuum pumps. The hydro treating virtually eliminates aromatics and sulphur to give good
resistance to sludge and varnish formation over time in corrosive environments. Directorr
™ Premium
vacuum oil enables Welch direct-drive vacuum pumps to maintain the highest vacuum performance
over time. The oil is light yellow.
The technical data and operating characteristics of Rotary vane pumps are only guaranteed if
original Welch Directorr
™ Premium vacuum oil is used!
4.6 Order Numbers of Models
Choose the configuration according to your needs:
Fig. 6 Order number configuration
Lubrication
Order number for customer located in Americas:
Description
Order no.
Order number for customer located in EMEA, Asia:
Description
Order no.
CAS No.
64742-65-0
Vapour Pressure (at 25°C)
1×10
-6
mbar (1×10
-6
Torr)
Viscosity (at 40°C)
65 cSt (305 SUS)
Specific Gravity
0.87
Directorr
™ Premium
vacuum oil:
1 quart
8995P-11
1 gallon
8995P-15
5 gallon
8995P-20
55 gallon
8995P-25
Directorr
™ Premium
vacuum oil:
1 litre
800995-01
5 litre
800995-05
10 litre
800995-10
20 litre
800995-20
200 litre
800995-200