ELASTOSIL® S 699 A/B
ELASTOSIL® S 699 A/B is a two-part addition-curing silicone rubber which is vulcanised at elevated temperatures. ELASTOSIL has excellent heat resistance and is particularly recommended for abradable seals in turbines and compressor stages
- Suitable for abradable Seals
- Low density
- High temperature resistance
- Long pot life
- Mixing ratio 1:1
Before taking component A out of the container or adding the catalyst, stir the material thoroughly, but not at high shear rates. Do never use dissolver mixers. Components A and B can be mixed by hand or with metering equipment. The material must be evacuated before application to remove enclosed bubbles.
To achieve adhesion, any substrates have to be pretreaed with Primer G 790.
ELASTOSIL® S 699 A/B exhibits the silicone rubber typical properties such as high resistance to ozone, chemicals such as alcohols, phenols, glycols and other polar solvents, as well as aqeous detergents. It shows limited resistance to ketones, esters, aromatic and alipatic hydrocarbons (e. g. fuels, gasoline, kerosene etc.), those substances lead to a temporary and reversible volume swell of the silicone vulcanisate. Critical are strong alkaline and acidic substances.
The platinum catalyst is in the A-component
Silicone Elastomer for abradable seals, e. g. in compressors, turbofans and turbine engines.