Sikasil®-403 Fire

• Certified according to "Low Emitting Materials as per Al Sa'fat - Dubai Green Building Evaluation System" by Dubai Central Laboratory (DCL)

• Tested acc. EN 1366-4:2006
• Tested acc. EN 1363-1:2020
• Tested acc. ASTM C920 (class 50)
• VOC test report (US EPA Method 24)
• VOC Emission Test Report (CDPH)

Neutral cure silicone

Sikasil®-403 Fire has a shelf life of 12 months from the date of production, if it is stored in undamaged, original, sealed packaging, and if the storage conditions are met.

Sikasil®-403 Fire shall be stored in dry conditions, where it is protected from direct sunlight and at temperatures between +5 °C and +25 °C.

~1.22 kg/l

−40 °C to 150 °C max.

The joint width must be designed to suit the joint movement required andthe movement capability of the sealant. The joint width shall be ≥ 10 mm and ≤ 45 mm. The joint depth shall be ≤ 15 mm.

A width to depth ratio of 2 : 1 must be maintained (for exceptions, see table below).

Standard joint widths for joints between concrete elements: (Movement Capability: ±50 % (ASTM C719) and ΔT: 80 °C)

For larger joints following depth should be maintained:

All joints must be correctly designed and dimensioned in accordance with the relevant standards before their construction. The basis for calculation of the necessary joint widths are the type of structure and its dimensions, the technical values of the adjacent building materials and the joint sealing material, as well as the specific exposure of the building and the joints. For more detailed advice and instructions please contact our Technical Department.

Use closed cell, polyethylene foam backing rods.

5 °C min. / 40 °C max. (min. 3 °C above dew point temperature)

5 °C min. / 40 °C max.

The substrate must be clean, dry, sound and homogeneous, free from oils, grease, dust and loose or friable particles. The following priming and/or pre-treatment procedures shall be followed:

Non-porous substrates
Anodised aluminium and stainless steel have to be pre-treated using Sika® Aktivator-205, Sika® Aktivator- 100 or Sika® Cleaner P. Powder coated and PVDF coated metals have to be pre-treated using Sika® Aktivator-205. For details like application and flash-off times refer to the most recent Product Data Sheet of the respective pre-treatment product.

Porous substrates
Concrete, aerated concrete and cement-based renders, mortars and bricks shall be primed using Sika® Primer-3 N or Sika® Primer-210. For details like application and flash-off times refer to the most recent Product Data Sheet of the respective pre-treatment product.
Adhesion tests on project specific substrates must be performed prior to application. For more detailed advice and instructions please contact our Technical Department.

Note: Primers are adhesion promoters. They are neither a substitute for the correct cleaning of a surface,
nor do they improve the strength of the surface significantly.

Clean all tools and application equipment immediately after use with Sika® Remover-208. Once cured, residual material can only be removed mechanically.