ELASTOSIL® RT 685 A/B
ELASTOSIL® RT 685 A/B is a free-flowing, additioncuring silicone rubber. After mixing of the components, it yields a ready-to-use product which cures rapidly at high temperatues.
特性
- solvent-free
- processing viscosity suitable for silk-screen printing
- long-term flexibility over a temperature range from -50 °C to +200 °C
- good resistance to water and mineral oil
- long pot life of ready-to-use mixture
- can be colored with 3 - 5 % Pigment Paste FL
ELASTOSIL® RT 685 A/B may be used for applications which require a high and low temperature-resistant flexible coating.
A typical application in the automotive industry is silkscreen printing on selected areas of cylinder head gaskets.
Some fillers may settle during transport and storage. To ensure a uniform mix, the component A should be stirred thoroughly prior to use.
To prepare ready-to-use mixtures, the components should mixed well.
Small amounts can be mixed by hand or mechanically (e. g. power tool fitted with mixing blade) for at least 30 seconds.
Colours may be obtained by addition of 3-5 % Pigment Paste FL if desired. After addition the material has to be mixed carefully.
Note:
Certain substances can inhibit the curing process to a greater or lesser extent. The most notable include:
- Sulphur and sulphur-containing materials (e. g. vulcanizing agents in natural and synthetic rubbers)
- Amines, urethanes and amine-containing materials (e. g. amine-cured epoxy resins)
- Unsaturated hydrocarbons (e. g. certain plasticizers)
- Organo-metallic compounds, particularly organo-tin compounds and materials containing such substances (e. g. curing agents and condensation-cured RTV-2 silicone rubbers).
If in doubt carry out preliminary tests to ascertain the compatibility of all materials in contact with the catalysed mix. Liquid product or sticky surfaces indicate cure inhibition. Our technical service will be glad to give you information on how to prevent such problems.
储存
The 'Best use before end' date of each batch is shown on the product label.
Storage beyond the date specified on the label does not necessarily mean that the product is no longer usable. In this case however, the properties required for the intended use must be checked for quality assurance reasons.
销售和支持
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