Description
Mapei Mapesil AC Silicone Sealant
– Available as Individual Cartridges and Boxes of 12
– 310ml Cartridges
Mapei Mapesil AC Silicone Sealant is a pure acetic silicone sealant, is
highly elastic and resistant to mould. It is vailable in all the colours in the
Mapei grouts collection. Mapei Mapesil AC Silicone Sealant is a pure, mould-
resistant, acetic silicone sealant with BioBlock® technology and is suitable for
movements up to 25%.
ADVANTAGES:
• High elasticity
• Mould-resistant (BioBlock® technology)
• Solvent-free
• Strong and durable
• Maximum guarantee
• Perfect adhesion
• Smooth and elastic
• High thermal and chemical resistance
• Excellent durability
• Wide range of colours
TECHNICAL DATA:
• Movement in service: 25%.
• Modulus of elasticity at 100% elongation: 0.35 N/mm².
• Shore A hardness: 20.
• Workability time: 10 minutes.
• Colours: 34 colours + transparent.
• EMICODE: EC1 Plus – very low emission.
• Application: extrusion gun.
• Consumption: 3.1 linear metres per 310 ml cartridge (10×10 mm section).
• Packaging: 310 ml cartridges.
WHERE TO USE:
Mapei Mapesil AC Silicone Sealant is an acetic-crosslinking silicone sealant
suitable for sealing glass, ceramic, and anodised aluminium.
After first having used a bonding enhancer, Primer FD can also be used on concrete,
wood, metal, painted surfaces, plastic and rubber.
Mapesil AC is used for:
· Sealing expansion joints of ± 25% expansion of the initial size, according to the
stanrdard EN 15651.
· Forming a perfectly elastic gasket between different elements in the building,
mechanical engineering, shipbuilding, automobile, manufacturing, etc.
APPLICATION EXAMPLES
· Sealing joints in wall and floor coverings of ceramic and cement, provided they
are not subject to heavy abrasion.
· Sealing joints between sinks or sanitary ware and ceramic tiles in kitchens,
bathrooms and showers with colours coordinated with the grouts.
· Sealing expansion joints in swimming pools.
· Assembling compositions of glass tiles and artistic stained glass windows.
· Sealing glazing, door, and window frames portholes, windows, and glass.
· Sealing air ducts, and water pipes.
· Sealing tanks, service pipes, and boilers.
· Sealing of joints subject to high chemical and thermal stress.
· Sealing materials of different thermal exposure coefficients.
TECHNICAL CHARACTERISTICS
Mapei Mapesil AC Silicone Sealant is a one-component, acetic crosslinking, solvent-
free silicone sealant, available coloured or transparent. It is a thixotropic paste
which is easily trowellable both horizontally and vertically. It crosslinks
following exposure to atmospheric humidity at ambient temperatures, and forms an
elastic product with following properties:
• excellent durability.
• Seals remain unchanged even after many years exposure to climatic extremes,
industrial pollution, sudden temperature changes and immersion in water;
• high elasticity;
• excellent bonding to glass, ceramic and anodised aluminium;
• mildew resistant;
• waterproof and permeable to vapour;
• resistant to chemical agents;
• flexible down to -40°C and resistant to temperatures at +180°C;
• easily workable;
• in compliance with ISO 11600 norm, it is classified as F-25-LM.
• in compliance with EN 15651-1, EN 15651-2, EN 15651-3 and CE-marking
• in compliance with numerous international standards.
RECOMMENDATIONS
· Do not use Mapei Mapesil AC Silicone Sealant for joints in exterior between
ceramic tiles and light-coloured natural stone because dirt could accumulate by the
joints. In such cases, please contact Mapei Technical Service to identify the most
suitable solution.
· For sealing surfaces sensitive to acids such as limestone, use a neutral silicone
sealant (e.g. Mapesil LM).
· The use of Mapei Mapesil AC Silicone Sealant is not recommended on highly
plasticised material or on bituminous surfaces because of the release of substances
that reduce bonding and penetrate into the sealant, altering the colour and
resistance.
· The resistance of Mapei Mapesil AC Silicone Sealant to chemical agents is
generally excellent; however, due to the numerous products and working conditions
to which Mapei Mapesil AC Silicone Sealant can be applied, it is always advisable
to do a sample test in cases of doubt.
· Do not use Mapei Mapesil AC Silicone Sealant to seal aquariums.
· For sealing floor joints subject to heavy traffic, use a polyurethane (e.g.
Mapeflex PU 45 FT) or epoxy-polyurethane (e.g. E-PU 21 SL) sealant.
APPLICATION PROCEDURE
Preparing and calculating joints size
All the surfaces to receive the sealant must be dry, solid, and free from dust and
loose particles, oils, grease, wax, old paint, and rust.
In order that the seal can carry out its function, provision must be made for it to
elongate and compress freely.
During application, it is, therefore, necessary that:
· it adheres only to the side of the walls of the joint and not to the base of the
joint;
· the joint is sized so that the estimated maximum extension is not greater than
25% of the initial width (calculated at +20°C);
· when the width of the joint is 10 mm, the thickness must be equal to the width;
for widths between 11 and 20 mm the thickness must always be equal to 10 mm; for
widths greater than the thickness must be equal to half the width.
To control the depth of the joint and to prevent Mapesil AC from adhering to the
base, the bottom of the joint should be filled with a sized Mapefoam, a
polyethylene cord.
Application of Primer FD
Where the use of Primer FD is necessary, it must be applied with a small brush onto
the appropriate areas of the joints and left to dry for several minutes to allow
the solvent to evaporate. Then apply Mapei Mapesil AC Silicone Sealant.
Application of Mapesil AC
Mapei Mapesil AC Silicone Sealant is packed in cartridges of 310 ml; to use, cut
the cartridge above the end of the thread and screw on the nozzle, which should be
cut at 45° to produce a hole corresponding to the size of the joint. Insert the
cartridge into the gun and extrude the sealant.
The surface of Mapei Mapesil AC Silicone Sealant must be finished off with a tool
moistened with soapy water before a superficial film has formed.
Crosslinking
When exposed to air and humidity, Mapesil AC crosslinks and becomes elastic. The
speed at which Mapesil AC crosslinks depends only slightly on temperature, but is
fundamentally linked to humidity in the atmosphere.
CLEANING
Traces of unpolymerised Mapei Mapesil AC Silicone Sealant may be removed with
common solvents (ethyl acetate, petrol, toluene); after complete cross-linking, the
silicone rubber may only be removed mechanically.
Avoid contact between Mapei Mapesil AC Silicone Sealant not yet polymerised and any
type of solvent, to avoid delays or inhibition of the final hardening process
CONSUMPTION
Consumption of Mapesil AC varies depending on the width of the joints. Some
examples of consumption for end joints and triangular joints are shown in the
chart.
Primer FD:
100 g/m²
STORAGE
Mapei Mapesil AC Silicone Sealant can be stored 24 months in a dry cool place in
original cartridges.
Primer FD, when stored in a cool and dry place (at a temperature not higher than
+25°C) has a storage life of 6 months.
SAFETY INSTRUCTIONS
Mapei Mapesil AC Silicone Sealant is not considered dangerous according to current
norms regarding the classifcation of mixtures. During use, wear protective gloves
and goggles and take the usual precautions for handling chemicals.
For further and complete information about the safe use of our product please refer
to the latest version of our Material Safety Data Sheet.
Primer FD is easily inflammable. It is recommended storing it away from naked
flames and sparks, to avoid smoking, to prevent the build up of electrostatic
energy and to work in well ventilated areas.
Furthermore, it is irritant for the eyes and skin, it may cause drowsiness and
dizziness, it is harmful if swallowed or inhaled, and it may cause irreversible
damage if used for lengthy periods.
During use, wear protective gloves to prevent dry, chapped skin, and take the usual
precautions for handling chemicals.
If the product comes in contact with the eyes or skin, wash immediately with plenty
of clean water and seek medical attention.
Wear a suitable device to protect the respiratory system.
Do not use in presence of pregnant women.
For further and complete information about the safe use of our product please refer
to the latest version of our Material Safety Data Sheet.
PRODUCT FOR PROFESSIONAL USE.
