WACKER® WS35
WACKER® WS35 is a one-component, neutral curing，high modulus silicone sealant with good adhesion for DIY application.
WACKER® WS35 cures at room temperature in the presence of atmospheric moisture to give a permanent flexible silicone rubber.
Properties
• Non-sag
• Primerless adhesion to most substrates
• Non-corrosive to metals
• Suitable for alkaline substrates such as concrete, motar, fibrous cement
• Solvent-free, thus featuring low volume shrinkage during vulcanization
• Ready gunnability at low (+5°C) and high (+40°C) temperatures
• Flexible at low (-40 °C) and high temperatures
(+150°C)
• Excellent weatherability
• Rapid crosslinking: quickly becomes tack-free and crack resistant
Data sheets
Applications
• Sealing of joints between glazing and supporting structures （frames，tansoms，mullions）
• Sealing of perimeter joints
• Sealing of connecting and expansion joints in the building industry
• Industrial sealant for the automotive, aircraft and shipbuilding industries
Restrictions on use
WACKER® WS35 may be discolored in contact with some organic elastomers, e.g., EPDM, APTK and neoprene.
WACKER® WS35 is not recommended for use on natural stone, such as marble, granite, quartzite, as it can cause staining.
WACKER® WS35 must not be used for sealing of auqaria.
WACKER® WS35 is not recommended for structural glazing bonding.
The curing time can be extended at lower temperature, lower humidity or by low volume of air exchange.
Preparation
The substrate areas that will be in contact with the sealant must be clean, dry and free of all loose material, dust, dirt, rust, oil and other contaminants. Non-porous substrates should be cleaned with a solvent and a clean, lint-free, cotton cloth. Wipe dry immediately with another such cloth before the solvent evaporates from the surface.
Adhesion
WACKER® WS35 exhibits excellent primerless adhesion to most non-porous siliceous material, e.g., glass, tiles, ceramics, enamel, glazed tiles and clinker; impregnated, varnished or painted wood; and some plastics.
Users must carry out their own tests due to the great variety of substances.
These figures are intended as a guide and should not be used in preparing specifications.。
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.
Storage
WACKER® WS 35 has a shelf life of at least 12 months when stored at a cool dry place (below 25℃).
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
Ann Arbor, MI 48108
United States
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Distributors
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