Sikaflex 400 Fire - Fire Resistant Polyurethane Joint Sealant
1-Part Elastic Sealant with Up to 4 Hours Fire Resistance
Sikaflex-400 Fire is a fire-resistant, polyurethane, 1-part, moisture-curing, elastic joint sealant with a movement capability of ±35%. Suitable for both internal and external applications.
Uses:
Sikaflex-400 Fire is designed for fire-rated movement and connection joints, as well as penetrations on both porous and non-porous substrates.
Characteristics / 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% (ASTM C719)
Easy to smooth and good workability
Good adhesion to many different substrates
Long open time
Product Information:
Composition: 1-part Polyurethane
Packaging: 600 ml foil pack (20 per box)
Shelf life: 12 months from date of production (if stored correctly)
Storage conditions: Dry conditions, +5 °C to +35 °C, in original, unopened packaging
Colour: Grey
Density: ~1.40 kg/l (ISO 1183-1)
Application Information:
Consumption (per 600 ml foil pack):
Joint width 10 mm, depth 10 mm: ~6 meters
Joint width 15 mm, depth 10 mm: ~4 meters
Joint width 20 mm, depth 10 mm: ~3 meters
Joint width 25 mm, depth 12 mm: ~2 meters
Joint width 30 mm, depth 15 mm: ~1.3 meters
Sag flow: ~0 mm (20 mm profile, 50 °C) (ISO 7390)
Ambient air temperature: +5 °C to +40 °C
Substrate temperature: +5 °C to +40 °C (minimum 3 °C above dew point)
Curing rate: ~2.5 mm/24 hours (+23 °C / 50% r.h.)
Skinning time: ~180 minutes (+23 °C / 50% r.h.)
Tooling time: ~150 minutes (+23 °C / 50% r.h.)
Important Considerations:
Can be over-painted with most conventional facade paints (test compatibility first). Non-flexible paints may reduce sealant elasticity.
Colour variations may occur due to exposure but do not affect performance.
Do not use on natural stone, bituminous substrates, natural rubber, EPDM, or materials that may leach oils, plasticisers, or solvents.
Do not use in or around swimming pools or for joints under water pressure.
Avoid exposing uncured sealant to alcohol-containing products.
Application Instructions:
Substrate Preparation: Must be sound, clean, dry, and free of contaminants. Remove old sealants and poorly bonded paint. Repair damaged joint edges. New joints should be saw-cut and cleaned.
Priming: Sikaflex-400 Fire generally adheres without primer. For optimum adhesion on non-porous (e.g., aluminium, stainless steel, PVC) and porous (e.g., concrete, brick) substrates in critical applications, refer to the detailed priming instructions in the full Product Data Sheet.
Application: Apply with a sealant gun, ensuring full contact with joint sides and avoiding air entrapment. Tool sealant firmly against joint sides immediately after application using a compatible tooling agent (e.g., Sika Tooling Agent N) or water.
Cleaning of Equipment: Clean tools with Sika Remover-208 immediately after use. Cured material can only be removed mechanically.
Need a fire-resistant sealant for your construction joints? Sikaflex-400 Fire offers up to 4 hours of fire protection and excellent movement capability.
Get unbeatable trade prices on 600ml foil packs (20 per box) and fast nationwide shipping on all Sika products. Pick up your order from our store, Sika Wetherill Park in Sydney, or any Sika warehouse nationwide.
Colour Accuracy Disclaimer: We have taken care to display the most accurate visuals of our products. However, we are not responsible for the colour accuracy of the device you are viewing our swatches on. These variations arise due to different computer monitors and devices (make, model and technology, as well as resolution, contrast and brightness control settings) in much the same way a scan will differ from an original image and a colour photocopy. Furthermore, coatings can exhibit variation in perceived colour depending on gloss level and application method. If you require a very specific colour match, please make your selection via actual swatches and colour boards available at our showroom.
Product Disclaimer: Ensure you read all product, technical and safety data sheets prior to application as liability falls on the applicator. All products must be applied in accordance with manufacturer’s recommended method.
