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Silfluo LF-PM175 silicone diffusion pump fluid chemical structure
Silfluo LF-PM175 silicone diffusion pump fluid chemical structure

LF-PM175 Silicone Diffusion Pump Fluid

Silfluo LF-PM175 silicone diffusion pump fluid, 165–185 cSt, refractive index 1.5765–1.5785, for vacuum coating, vacuum smelting and electron microscopy.

Typical Physical Properties of LF-PM175 Silicone Diffusion Pump Fluid


Silfluo Code

LF-PM175

Appearance

Colorless transparent liquid

Kinematic Viscosity (25°C, cSt)

165–185

Specific Gravity (25°C)

1.090–1.100

Flash Point (°C)

≥245

Freezing Point (°C)

−18 to −14

Refractive Index (25°C)

1.5765–1.5785

Ultimate Vacuum:

≤ 3.1 × 10⁻9


Applications of LF-PM175 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-PM175 Silicone Diffusion Pump Fluid


  • 25 kg or 200 kg drums and 1000 L IBCs.


Safety and Storage of LF-PM175 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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