Sikaflex®-400 Fire
Fire resistant polyurethane joint sealant
Sikaflex®-400 Fire is a fire resistant, polyurethane, 1-part, moisture-curing, elastic joint sealant. Movement capability ± 35 %. Internal and external use.
- Up to 4 hours fire resistance according to AS 1530.4
- Up to 4 hours fire resistance according to EN 1366-4
- Movement capability ±35 % (ASTMC719)
- Easy to smooth and good workability
- Good adhesion to many different substrates
- Long open time
Usage
Sikaflex®-400 Fire is designed for fire rated movement and connection joints and penetrations on porous and non-porous substrates.Advantages
- Up to 4 hours fire resistance according to AS 1530.4
- Up to 4 hours fire resistance according to EN 1366-4
- Movement capability ±35 % (ASTMC719)
- Easy to smooth and good workability
- Good adhesion to many different substrates
- Long open time
Packaging
600 ml cylindrical foil pack: 20 foil packs per box
Colour
Grey
Product Details
ENVIRONMENTAL INFORMATION
- Conformity with LEED v4 EQc 2: Low-Emitting Materials
APPROVALS / STANDARDS
- ASTM C920-14 Class 35, Sikaflex®-400 Fire, MST, Report No 1117920V-SIKA
- Fire Resistance AS 1530.4, Sikaflex®-400 Fire, CSIRO, Report No FSP 1819
- Fire Resistance AS 1530.4, Sikaflex®-400 Fire, Exova, Report No 376610B
- Fire Resistance ISO/IEC 17025, Sikaflex®-400 Fire, NATA, Report No FSP 1839
- Fire testing EN 13501-2, Sikaflex®-400 Fire, Exova, Report No 391651
- Performance Test EN 15651-1, Sikaflex®-400 Fire, SKZ, Report No 123504/16-III
- Test ISO 11600, Sikaflex®-400 Fire, SKZ, Report No 123504/16-IV
Composition
1- part Polyurethane
Shelf Life
12 months from date of production
Storage Conditions
The product must be stored in original, unopened and undamaged sealed packaging in dry conditions at temperatures between +5 °C and +35 °C. Always refer to packaging.
Density
| ~1.40 kg/l | (ISO 1183-1) |
Shore Hardness
| ~25 (after 28 days) | (ISO 868) |
Secant Tensile Modulus
| ~0.30 N/mm² at 100 % elongation (23 °C) | (ISO 8339) |
| ~0.45 N/mm² at 100 % elongation (−20 °C) |
Elastic Recovery
| ~85 % | (ISO 7389) |
Tear Propagation Resistance
| ~5.0 N/mm | (ISO 34) |
Movement Capability
| ± 25 % | (ISO 9047) |
| ± 35 % | (ASTM C 719) |
Resistance to fire
Refer to ‘Approvals / Certificates’, Sika Passive Fire Protection Handbook or contact Sika Technical Services for specific information.
Service Temperature
−40 °C min. / + 70 °C max.
Joint Design
Refer to ‘Approvals / Certificates’, Sika Passive Fire Protection Handbook or contact Sika Technical Services for specific information.
Application
Backing Material
Refer to ‘Approvals / Certificates’, Sika Passive Fire Protection Handbook or contact Sika Technical Services for specific information.
Sag Flow
| ~0 mm (20 mm profile, 50 °C) | (SO 7390) |
Ambient Air Temperature
+5 °C min. / +40 °C max.
Substrate Temperature
+5 °C min. / +40 °C max.
Minimum 3 °C above dew point temperature
Curing Rate
| ~2.5 mm/24 hours (+23 °C / 50 % r.h.) | (CQP 049-2) |
Skin Time
| ~180 minutes (+23 °C / 50 % r.h.) | (CQP 019-1) |
Tooling Time
| ~150 minutes (+23 °C / 50 % r.h.) | (CQP 019-2) |
Consumption
| Joint width | Joint depth | Joint length per foil pack (600 ml) |
| 10 mm | 10 mm | 6 m |
| 15 mm | 10 mm | 4 m |
| 20 mm | 10 mm | 3 m |
| 25 mm | 12 mm | 2 m |
| 30 mm | 15 mm | 1.3 m |
SUBSTRATE PREPARATION
The substrate must be sound, clean, dry and free from all contaminants such as dirt, oil, grease, cement laitance, old sealants and poorly bonded paint coatings which could adversely affect the adhesion of the sealant. The substrate must be of sufficient strength to resist the stresses induced by the sealant during movement.
Removal techniques such as wire brushing, grinding, grit blasting or other suitable mechanical tools can be used.
Repair all damaged joint edges with Sika® MonoTop® or Sikadur® range of products.
New or refurbished joints must be saw-cut.
Where joints in a substrate are saw cut, all slurry material must be flushed away and joint surfaces allowed to dry, after saw cutting.
All dust, loose and friable material must be completely removed from all surfaces before application of any activators, primers or sealant.
Sikaflex®-400 Fire adheres without primers and/or activators.
For optimum adhesion, joint durability and critical, high performance applications such as joints on multi-storey buildings, highly stressed joints, extreme weather exposure or water immersion / exposure, the following priming and/or pre-treatment procedures must be followed:
Non-porous substrates
Aluminium, anodised aluminium, stainless steel, PVC, galvanised steel, powder coated metals or glazed tiles. Slightly roughen surface with a fine abrasive pad. Clean and pre-treat using Sika® Aktivator-205 with a clean cloth. Before sealing, allow a waiting time of > 15 minutes (< 6 hours).
Other metals, such as copper, brass and titanium-zinc, clean and pre-treat using Sika® Aktivator-205 with a clean cloth. After a waiting time of > 15 minutes (< 6 hours), apply Sika® Primer-3 N by brush. Before sealing, allow a waiting time of > 30 minutes (< 8 hours)
Porous substrates
Concrete, aerated concrete and cement based renders, mortars and bricks surfaces must be primed using Sika® Primer-3 N or Sika® Primer-210 by brush. Before sealing, allow a waiting time of > 30 minutes (< 8 hours).
For more details on 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 and procedures agreed with all parties before full project application.
Contact Sika Technical Services for additional information.
Note: Primers and activators are adhesion promoters and not an alternative to improve poor preparation / cleaning of the joint surface. Primers also improve the long term adhesion performance of the sealed joint.
MIXING
1-part ready to use
CLEANING OF TOOLS
Clean all tools and application equipment with Sika® Remover-208 immediately after use. Hardened material can only be removed mechanically. For cleaning skin, use Sika® Cleaning Wipes-100