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Neutral curing silicone sealant  

   

Sikasil AP - Neutral curing silicone sealant

 

Sikasil-AP is a one part neutral curing multi purpose silicone sealant suitable for indoor and outdoor applications. Uses Sikasil-AP provides weatherproof joints between various substrates such as glass, metals, painted surfaces, wood, ceramic tiles, concrete.

 

Characteristics / Advantages

 

Provides primerless adhesion to a wide range of substrates

Very good UV and weathering resistance

Low odour

Non corrosive

 

Form

 

Colours

White, Grey, Black, Transparent

Packaging

300 ml cartridges, 12 cartridges per box

 

Storage

Storage Conditions / Shelf Life

 

12 months from date of production if stored in undamaged and unopened original  sealed containers, in dry conditions and protected from direct sunlight at temperatures between +10 C and +25 C.

 

Technical Data

 

Chemical Base

Neutral curing

Density

~ 1.25 kg/l coloured (ISO 1183-1)

~ 1.02 kg/l transparent (ISO 1183-1)

Skinning Time

~ 10 minutes (+23 C / 50% r.h.)

Curing Rate

~ 2 mm/24h (+23 C / 50% r.h.)

Movement Capability

20%

Sag Flow

< 2 mm (ISO7390)

Service Temperature

-40 C to +120 C

 

Mechanical / Physical Properties

 

Tensile Strength

~ 1.7 N/mm2 (+23 C / 50% r.h.) Coloured (ISO 8339)

~ 1.2N/mm2 (+23 C / 50% r.h.) Transparent (ISO 8339)

Tear Strength

~ 1.0 N/mm2 (+23 C / 50% r.h.) (ISO 34 method C)

Shore A Hardness

~ 25 (after 28 days) Coloured (ISO 868)

~ 19 (after 28 days) Transparent (ISO 868)

E-Modulus

~ 0.5 N/mm2 at 100% elongation (+23 C / 50% r.h.) Coloured (ISO 8339)

~ 0.4 N/mm2 at 100% elongation (+23 C / 50% r.h.) Transparent (ISO 8339)

Elastic Recovery

> 80% (+23 C / 50% r.h.) (ISO 7389)

 

Application Details Consumption

 

Joint Design:
 
The joint width must be designed to be within the movement capability of the sealant. In general the joint width must be > 6 mm and < 12 mm. The width to depth ration of ~ 2 : 1 must be respected.
 

Joint width

6 mm

9 mm

12 mm

Joint depth

4 mm

5 mm

6 mm

Joint length / 300 ml

 

~ 12.5 m

~ 6.5 m

~ 4 m

 

Substrate Quality
 
Clean and dry, homogeneous, free from oils and grease, dust and loose or friable  particles. Cement laitance must be removed.    
 

Substrate Preparation / Priming

Refer to relevant primer recommendations.

 

Application - Conditions / Limitations

 

Substrate Temperature: +5 C min. / +40 C max.

Ambient Temperature: +5 C min. / +40 C max.

Substrate Moisture Content: Substrate must be dry

 

Application Method / Tools

 

Sikasil-AP is supplied ready to use.

After suitable joint and substrate preparation and priming if necessary and properly prepared substrate, the sealant is gunned into place and tooled within 5 minutes, using a spatula and suitable smoothing liquid.

Masking tape is then removed immediately.

Uncured material can be removed by using a suitable solvent or an approved sealant remover.

Cured material can only be removed mechanically.

Cleaning of Tools Clean all tools and application equipment with Sika TopClean-T / Colma Cleaner  immediately after use. Hardened / cured material can only be mechanically removed.

 

Notes on Application / Limitations
 

Do not use on bituminous substrates, natural rubber, chloropene, EPDM or on building materials which might bleed oils, plastisicers or solvents.

Do not use in totally confined space because Sikasil-AP requires atmospheric moisture to cure.

Bleeding can occur on porous substrates such as concrete, marbles, granites and other natural stones.

On sensitive substrates, specific pretesting must be carried out.

Sikasil-AP is not recommended for use in submerged joints or in joints where physical abuse or abrasion are likely to occur. It is also not recommended for structural glazing or insulated glazing and food contact applications.

Sikasil-AP is not suitable for medical or pharmaceutical uses.

 

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