WACKER AK350 25kg – Silicone Oil for Lubrication, Protection and Industrial Applications, Viscosity 350 mm²/s

Linear, non-reactive polydimethylsiloxane (silicone oil) with a viscosity of approx. 350 mm²/s. Thanks to its chemical structure, it has a significantly better property profile than mineral oils: it is clear, colorless and odorless.

Properties

• Minimal change in physical properties over a wide temperature range
• Excellent water-repellent properties
• Good dielectric properties
• Low surface tension and high surface activity
• Chemically highly inert
• Low solidifying point
• Good solubility in a wide range of organic solvents

Technical data (typical values)

• Appearance: colorless, clear
• Kinematic viscosity (25 °C): approx. 350 mm²/s
• Density (25 °C): approx. 0.97 g/cm³
• Refractive index (25 °C): approx. 1.403
• Surface tension (25 °C): 0.021 N/m
• Flash point: 266 °C
• Ignition temperature: 410 °C

Applications

• Release agent
• Lubricant
• Hydraulic fluid
• Antifoam agent (including agrochemicals)
• Water-repellent agent
• Liquid dielectric for electrical and electronic equipment
• Heat-transfer oil
• Additive for polishes, paint conditioners and care products
• Plastics additive
• Additive for textile and fiber auxiliaries
• Agricultural and agrochemical solutions
• Plastic-care products

WACKER AK silicone fluids of different viscosities are miscible with each other in any ratio, so viscosity can be easily adjusted. The product is non-polar: it is immiscible with water or short-chain alcohols, but soluble in hydrocarbons, chlorinated hydrocarbons, ethers, esters, ketones and higher alcohols. A laboratory test is recommended before first use with a solvent.

Storage: maximum temperature 50 °C (actively cooled transport is not required). The “best use before” date is shown on the batch label.

Industrial product – for pharmaceutical applications the manufacturer recommends the SILFAR® line; for cosmetics, the BELSIL® line. For particularly high heat and shear resistance, specialty grades (AK stab, AK visc, AKC) are available.