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Silicone Oil 350 cPs (Polydimethylsiloxane PDMS)

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Available sizes
SizePrice ex VATPrice inc VAT
100ml £5.83 £6.99
500ml £10.83 £12.99
1L £15.83 £18.99
5L £57.49 £68.99
10L £100.00 £120.00
20L £176.67 £212.00
200L £1,582.50 £1,899.00

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A high quality of silicone oil which is clear, water- white, tasteless, odourless and neutral liquid. Its viscosity shows very little change with temperature variation. It exhibits minimum of change among all types of silicone fluids. Outstanding resistance to high and low temperature extremes, maintenance of flexibility over a wide temperature range are its unique properties.

It shows high resistance to breakdown by mechanical shearing. The low change in viscosity with temperature and excellent heat and cold resistance makes it an ideal lubricant. It is, therefore, widely used in gear wheels, bearings and brushes. It exhibits excellent dielectric properties, which are maintained for prolonged periods of time even under varying operating conditions.

Performance properties:

  • High and low-temperature stability
  • Low pour point
  • Low temperature and pressure dependence of viscosity
  • Good dielectric characteristics
  • Low interfacial energy
  • High surface activity
  • High compressibility
  • Chemical inertness

Uses for Silicone 350:

  • Heat transfer media
  • Thermal transfer fluids
  • Hydraulic fluids
  • Dielectrics fluids
  • Water repellents
  • Polishes
  • Lubricants for eg treadmills
  • Antifoams
  • Mould release agents

Properties of silicone oil:

  • Synonyms: alpha-Methyl-omega-methoxypolydi­methylsiloxane, PDMS
  • Formula: (-Si(CH3)2O-)n
  • CAS No: 63148-62-9
  • Viscosity: 350 mm2/s
  • Melting Point: -55 oC
  • Autoignition Point: >400 oC
  • Flash Point: 315 oC
  • Density: 0.98 g/cm3 at 20oC
  • Solubility: insoluble in water

Silicone 350 is insoluble in water, methanol, ethanol, dilute acids and caustics, vegetable and mineral oils, glycol and glycerin. It is soluble in hexane, aromatic hydrocarbons, chlorohydrocarbons, ethers, esters, ketones and higher alcohols.

Health & Safety:

This product is not classified according to the EU regulations.

Click here for MSDS

Click here for TECH

Other silicone oils we have available:

Silicone oil 50cPs

Silicone oil 350cPs

Silicone oil 1000 cPs

Silicone oil 5000cPs

Silicone emulsion


PLEASE NOTE: This product is not for human or animal consumption.