Xiameter PMX-200 Silicone Fluid

XIAMETER™ PMX-561 Transformer Liquid

Xiameter PMX-561 (formerly Dow Corning 561 Silicone Transformer Liquid) is a polydimethyl silicone liquid used for cooling and insulating transformers and other electrical equipment.

XIAMETER™ PMX-561 Transformer Liquid

Xiameter PMX-561 has excellent electrical insulation properties over a wide temperature range, combined with high thermal stability.

The product can be used as an alternative to organic transformer oil.

Xiameter PMX-561 meets the requirements of:

  • International Electrotechnical Commission (IEC) 836 “specifications for silicone liquid for electrical purposes” (Silicone Type T-1).
  • ASTM D 4652-92 “silicone fluids for electrical insulation”.
  • IEC 1100 – “Classification of insulating liquids according to fire point and net calorific value” (Class K3).

Xiameter PMX-561 was previously called Dow Corning 561 Silicone Transformer Liquid.


  • Suitable for transformers and other electrical equipment designed to operate at high temperatures or at very low temperatures.


  • Meets the requirements of IEC 60836 and ASTM D 4652-92
  • Silicon Oil
  • Essentially non-toxic
  • Environmentally safe
  • Compatible with a wide range of solid electrical insulating materials
  • Contains no additives
  • High thermal stability and oxidation resistance
  • Higher fire point and lower heat release rate than other types of class K insulating liquids
  • Good electrical properties and operating capabilities over a wide temperature range
  • Non-sludging

This product is part of the Xiameter range

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Filling of gaps and trailing edges
Bonding of sensors and current conductors
Repair, fixing of inserts and added elementsof inserts and added elements
Casing repair and bonding
Tooling with high temperature resistance
Union of added elements: Vortex, Serrations, etc.
Bonding of Nacelle
Control Shaft & Components
Protection of Screws & Components for Export
Sealing of Assembled Parts