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TMC Industries TMC-705 Diffusion Pump Oil

TMC 705 diffusion pump fluid is a single component (Pentaphenyl trimethyl trisiloxane), clear fluid that is chemically equivalent to Dow Corning® DC-705. Developed for use in ultra-high vacuums of 10-9 Torr (untrapped) and 10-11 (trapped), TMC 705 performs well in high purity metalizing applications where quick pump-down is needed, as well as thermal, radiation and chemical stability.

Product Type: Oil

Application Area: Pump, Vacuum Pumps

Features: Chemical Resistant, Good Thermal Stability, Radiation (Gamma) Resistant

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Identification & Functionality

Product Type

Features & Benefits

Product Highlights

Because of its low vapor pressure, TMC 705 can reduce the chances for contamination in untrapped systems by a factor of 100 or more compared to TMC 704 and other fluids. The vapor pressure is so low, that deepest vacuum levels can be obtained with water-cooled baffles alone.

Features
  • Thermally and chemically stable
  • Ideal for high gas load applications
  • Chemically equivalent to DC-705
  • Aerospace and electronics industries
  • Quick pump-down
  • Pump jets stay clean
  • Metallurgical and research needs
  • Reclaimable by TMC Industries, Inc.

Applications & Uses

Application Area

Properties

Typical Properties
ValueUnitsTest Method / Conditions
Vapor Pressure (25°C)10⁻⁸ - 10⁻¹⁰torr
Viscosity (25°C)160.0cSt
Boiling Point (5 Torr)243.0°C
Density (25°C)1.097g/ml
Flash Point (Open Cup)min. 240°CCOC