ELASTOSIL SC 890 A/B KR
ELASTOSIL® SC 890 A/B KR is a self-levelling room temperature curing, two-part silicone rubber, forming a predominantly open-cell foam.
Properties
- low density
- low lateral pressure
- high compressibility
- high mechanical strength
- low flammability/high LOI
- processing automatically or manually
Data sheets
- bunstock- and sheet foam parts
- molded foam articles
- foam laminates
- general purpose foam for gaskets (dispensed foam gaskets)
- suitable for NHV insulation
- shock and vibration damping at high temperature changes
ELASTOSIL® SC 890 A/B KR can be processed both manually and by help of dispensing equipment.
1) Manual processing: suitable quantities of A and B have to be mixed thoroughly by help of a spatula or lab mixer (propeller mixer). Mixing time not longer than 2 minutes at 23°C.
2) Dynamic mixing devices yield the most uniform and homogeneous foam structure. Preloading of the A-component with air pressure further improves the foam structure and reduces density.
The basic color of the cured rubber is white but can be varied using between 0.5 and 1.5% „Farbpaste FL“-pigments.
To ensure a uniform foam quality, the A component needs to be thoroughly stirred prior to use.
The product should be processed in a temperature range of 20 - 25°C. Deviations in cell structure and pot life have to be expected if the temperature is much lower or higher.
Density and structure of the resulted foam depends on following factors:
- temperature of the mixture
- mixing intensity (type of mixer, mixing time)
- amount of incorporated air during mixing
- possibility of expansion
Storage
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.
Sales and support
Bracknell RG12 1WA
United Kingdom
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