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EV-Silicon Oil-704

For diffusion pumps
EV-Silicon Oil-704 is specific compound called Tetramethyl Tetraphenyl Trisiloxane. This form of oil provides superb resistance to oxidation, with very fast pump down times. This is a drop in replacement for the obsolete DC704. Used a replacement for Dow Corning DC704 and Wacker AN140.


EV-Silicon Oil-704 is available in:

1 kilo – article number: 100700
5 kilo – article number: 100702
20 kilo – article number: 100703
100 kilo – article number: 100704

For larger quantities please consult Eurovacuum BV or one of our dealers.

Technical data

Saturated Vapour Pressure @ 25ºC:3.0 X 10-8 torr
Average Boiling Range @ 5.0 X 10-1 torr: N/A
Mid Range Boiling @ 5.0 X 10-1 torr: N/A
Initial Boiling Point @ 5.0 X 10-1 torr: 197ºC: <0.1gr: = 0.025% Wt.
Molecular Weight: 484g/mol
Flash Point: >230ºC
Viscosity @ 40ºC:19cst
Viscosity @ 25ºC:38cst
Specific Gravity @ 25ºC:1.07
Colour: Water white
Oil Type: Phenyl-methyl