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S I L I C O N
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The Sealant is a one-component, moisture-cured silicone sealant which contains a fungicide. It cures at room temperature to form a flexible, medium modulus watertight joint for general sanitary sealing.Description
Particular properties
The Sealant has been specifically formulated as a sanitary sealant for use in hot humid environments such as kitchens and bathrooms where resistance to fungal growth is necessary.
The Sealant is easily extruded and its rapid curing characteristics enable units to be quickly sealed and put into service. Its smooth, glossy appearance compliments glazed sanitary ware and ceramic tiles.
The Sealant adheres without primer to glass, ceramic, vitreous, surfaces, painted surfaces and anodized aluminium. It offers good resistance to most common cleaning products.
Applications
The Sealant can be used on all weatherproofing or bonding applications where protection against fungal growth is sought, such as :
•
jointing baths, sinks, showers, kitchen furniture, urinals...•
jointing ceramic tiles, plumbing fixtures or cold rooms.
Characteristics
1. Before curingType of sealant .................................................................... acetic
Specific gravity (non cured), approx.........................................0.97
Flow resistance (EN 27390), mm, approx .................................... 1
Extrudability g/min, approx........................................................110
(standard NMRPS 495A 3mm/3 bars).
Viscosity ( strain 3000 N/m
2, 20°C), Pa.s, approx .......................802. Curing
Skin formation time*, min. approx. ............................................. . 9
Tack-free time*. min. approx...................................................... 20
Curing rate*
mm/1st day, approx .................................................................... 3
mm/3 day, approx..................................................................... 6.5
mm/7 days, approx. ................................................................... 10
Application temperatures , °C.. ...................................... +5 to + 40
3. After curingShore A hardness (ISO 868), approx. ........................................ 20
Elastic recovery (EN 27389), %, approx..................................... 95
Joint movement capability, %..................................................... 15
Operating temperatures, °C.,. ................................... – 30 to + 120
Mechanical properties on a 2 mm thick film (NF T 46002)
Modulus at 100% elongation, MPa, approx ............................... 0.5
Tensile strength, MPa, approx. ..................................................2.0
Elongation at break, % approx ................................................. 450
Mechanical properties on slabs (EN 28339)
Modulus at 100% elongation, MPa, approx. .............................. 0.4
Tensile strength, MPa, approx .................................................. 0.8
Elongation at break, %, approx. ............................................... 180
* at a temperature of 23°C and for relative humidity of 50%
Standards
The Sealant complies with ISO 846 concerning its fungicide action,
and ISO 11600 – 12,5 E.
Processing
Joint preparation :The joint faces to be bonded must be clean, dry and free from dust, oil,
grease, old sealant and any traces of contaminant which may affect adhesion.
Surfaces should be degreased with solvent soaked cloth and then wiped with a
clean cloth. To remove dust, use oil-free compressed air.
Joint dimensions :
The movement capability of sealant as well as local regulations must be
considered.
Sealant application :
For good performance it is essential that the sealant be only bonded to the
two facing sides of the joint; to achieve this, install a backup material
(closed cell polyethylene or open cell polyurethane foam). Apply the sealant
in a continuous operation, making sure that all air pockets or voids are
eliminated. Tool the sealant with light pressure to spread the material
against the joint surfaces. This operation should be made with a dry spatula
before skin formation occurs.
Processing
Excess uncured sealant should be wiped and cleaned with a
commercial solvent. Cured sealant can only be removed by scraping (i.e. with a razor blade), or with a special silicone remover product.
Limits of use
The Sealant must not be used on sensitive surfaces which could react with acetic acid which is released during cure, nor should it be used on materials where migration of constituents can take place e.g. certain rubbers.
The Sealant must not be used for sealing aquariums (presence of fungicide) for this application, use the AQUARIUM Sealant.
The Sealant (once cured) can be used in applications in which there is a risk of occasional short term contact with water-based foodstuffs, but under no circumstances should be used for permanent contact applications.
The Sealant is not recommended where abrasion or physical abuse will be encountered. For all uses in permanent immersion, please consult us.
Colours
Translucent, white, brown,
Packaging
The Sealant is available in 310 ml cartridges
Storage and
shelf life
The Sealant has a shelf life of 24 months in cartridge and of 18 months in drums, guaranteed by Rhodia Silicones from its date of manufacture (the expiry date is shown on the packaging), when stored at a temperature between –5°C to +50°C in its original unopened packaging.
Safety
Consult the Safety Data Sheet for the Multi-Purpose Sealant.
Warning to users
The information contained in this document is given in good faith based on our current knowledge. It is only an indication and is in no way binding, particularly as regards infringement of or prejudice to third party rights through the use of our products.
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