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Silfluo LF-PM174 silicone diffusion pump fluid chemical structure
Silfluo LF-PM174 silicone diffusion pump fluid chemical structure

LF-PM174 Silicone Diffusion Pump Fluid

Silfluo LF-PM174 silicone diffusion pump fluid, 36–40 cSt, with low saturated vapor pressure for high-vacuum coating, vacuum smelting and electron microscopy.

Typical Physical Properties of LF-PM174 Silicone Diffusion Pump Fluid


Silfluo Code

LF-PM174

Appearance

Colorless transparent liquid

Kinematic Viscosity (25°C, cSt)

36–40

Specific Gravity (25°C)

1.020–1.080

Flash Point (°C)

≥210

Freezing Point (°C)

−18 to −14

Refractive Index (25°C)

1.55–1.56

Ultimate Vacuum:

≤ 3.1 × 10⁻⁷


Applications of LF-PM174 Silicone Diffusion Pump Fluid


  • Vacuum coating and metallurgical processing

    Used as the working fluid in diffusion-pump vacuum systems for vacuum coating and high-vacuum smelting.

  • Electron-tube production and microscopy

    Used in diffusion-pump systems serving electron-tube manufacturing and electron microscopy.


Packing of LF-PM174 Silicone Diffusion Pump Fluid


  • 25 kg or 200 kg plastic drums, 200 kg plastic-lined steel drums, and 1000 L IBCs.


Safety and Storage of LF-PM174 Silicone Diffusion Pump Fluid


  • Shelf life: 24 months from the date of manufacture in original unopened containers at room temperature.

  • Transport as non-dangerous goods.

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