WACKER® WN - WEATHERSEAL NEUTRAL
WACKER® WN - WEATHERSEAL NEUTRAL is a one-component, neutral-curing, low modulus silicone sealant with outstanding adhesion and weather resistance, long shelf life and excellent tooling characteristics for construction, glass and window building.
WACKER® WN - WEATHERSEAL NEUTRAL cures at room temperature in the presence of atmospheric moisture to give a permanent flexible silicone rubber.
Properties
- 100% silicone
- excellent weatherability
- excellent tooling characteristics for professional use
- non-corrosive to metals
- suitable for alkaline substrates such as concrete, mortar, and fibrous cement
- matt finish
- excellent adhesion on most substrates without primer
- solvent-free, thus featuring low volume shrinkage during vulcanization
- ready gunnability at low (+ 5 °C) and high (+ 50 °C) temperatures
- flexible at low (-40 °C) and high temperatures (+150 °C)
- non-sag
Data sheets
Application fields
- sealing of connection and expansion joints in the building industry
- sealing of perimeter joints
- sealing of joints between glazing and supporting structures (frames, transoms, mullions)
Processing
Surfaces that will come into contact with the sealant must be dry, clean, and free of dust, dirt, rust, oil, or similar contaminants. Non-porous surfaces should be cleaned using a solvent and a clean, lint-free cotton cloth. The area must then be immediately wiped dry with a second clean cloth before the solvent evaporates.
For application from cartridges cut thread open, fix nozzle on top and cut to required bead size. The sealant can be applied in beads or layers. It requires moisture in order to cure. A decrease in temperature or humidity, as well as restricted air circulation, can significantly extend the time required for complete curing.
It is the responsibility of the user to test the compatibility of the sealant with the adjoining materials. Incompatible substances like coating materials (e.g., paints, varnishes, and glazes) or organic plasticizer containing rubbers (e.g., EPDM, butyl, and neoprene) can lead to discoloration or other impairments like loss of adhesion of the sealant. Substances that come into direct contact with the sealant after application, such as cleaning agents, or indirect contact through outgassing, can impair the function of the sealant or alter its appearance.
Due to the wide variety of possible materials and substrates, especially with plastics, WACKER cannot make any general statements regarding compatibility or adhesion. In case of doubt, users must carry out their own preliminary tests.
The use of tooling agents should be avoided if possible. Otherwise, water or a diluted solution of a little neutral soap or alcohol in water should be sparingly applied.
Certification
WACKER® WN - WEATHERSEAL NEUTRAL is certified and classified according to
- ASTM C920, Class 50
-
EN 13501-2, E 180-H-X-F-W4-25
-
EN 13501-2, EI 180-H-X-F-W4-25
-
EN 13501-2, E 180-V-X-F-W4-25
-
EN 13501-2, EI 180-V-X-F-W4-25
Adhesion
WACKER® WN - WEATHERSEAL NEUTRAL adheres excellently to many non-porous, silicate-based substrates—such as glass, tiles, ceramics, glazed tiles, enamel, and clinker—without the need for prior treatment with primers. It also bonds well to metals such as aluminum, steel, zinc, and copper, to painted, stained, or impregnated wood, as well as to many plastics.
Users must carry out their own tests due to the great variety of substances. The adhesion can be improved in many cases by pretreatment of the substrates with a primer. If adhesion difficulties arise please contact our technical service.
Restrictions on use
WACKER® WN - WEATHERSEAL NEUTRAL must not be used for insulating glass applications.
WACKER® WN - WEATHERSEAL NEUTRAL must not be used for structural glazing bonding.
WACKER® WN - WEATHERSEAL NEUTRAL is not recommended for use on natural stones, such as marble, granite, and quartzite, as it can cause staining.
WACKER® WN - WEATHERSEAL NEUTRAL is not recommended for sealing of aquaria or for long term use under water.
WACKER® WN - WEATHERSEAL NEUTRAL is not suitable for food grade applications where the joints are likely to come in contact with food.
WACKER® WN - WEATHERSEAL NEUTRAL is not suitable for use as a mirror adhesive.
Packaging
WACKER® WN - WEATHERSEAL NEUTRALis usually supplied in standard size cartridges that fit all standard caulking guns. Additionally it is available in convenient sausages.
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.
Store dry and cool.
Sales and support
Ann Arbor, MI 48108
United States
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