Flamex MS320 - Fire Rated Sealant
Verified by manufacturer 4 months ago
One-part, high modulus, fire rated trafficable sealant.
Application
For fire protection of construction, contraction and expansion joints within stadia terracing (due to high Shore A hardness), floors, curtain walling and building façades.
Description
A fire rated modified silane (MS) based sealant which cures quickly and provides good adhesion to most building materials. When subjected to fire, Flamex MS320 forms a stable insulating char which provides protection to the remaining sealant. Heat, flames and smoke are prevented from passing through the joint to adjacent areas of the structure.
Features and benefits:
- Tested in accordance with BS 1366-4.
- Up to a 5 hour fire rating in specified joint configurations.
- High modulus trafficable sealant.
- Prevents the passage of smoke through joints in fire conditions.
- In the form of a thixotropic paste.
- Can be applied to concrete or mild steel substrates.
- Available in 600 ml sachets.
General information
Color | Grey |
Finish | Smooth |
Material | Modified silane (MS) |
Shape | Formless |
Length | Bespoke |
Width | Bespoke |
Height | Bespoke |
Uniclass | |
CAWS | H42/661 Sealant joints H42/661 Sealant joints E40/530 Sealant E40/530 Sealant |
Specification data - Intumescent firestop sealants
Material | Modified silane (MS). |
Fire performance | |
Fire resistance | To BS 1366-4 in expansion joints, up to 5 hours (300 minutes).Guidance for specification option: Dependent on wall construction and joint size, consult manufacturer's literature for more information. |
Cure speed | 2 mm per day (23°C at 50% RH). |
Application temperature | 5–30°C. |
Shore A hardness | 40. |
Joint width | For joint widths of: 6–25 mm (joint design - wall). 6–30 mm (joint design - floor). Guidance for specification option: For wall joints 6–12 mm wide, a depth of 10 mm is required. For wall joints 13–25 mm wide, a depth of 15 mm is required. For floor joints 6–12 mm wide, a depth of 10 mm is required. For floor joints 13–20 mm wide, a depth of 15 mm is required. For floor joints 21–30 mm wide, a depth of 20 mm is required. |
Movement | 20% butt joints (at 1:1 width/ depth ratio). Manufacturer guidanceMovement accommodation factor (MAF) |
Flash point | >100°C. |
Solubility in water | Insoluble in water. |
Pressure | <0.001 kPa (at 20°C). Manufacturer guidanceVapor pressure |
Density | 1.42 (at 20°C). Manufacturer guidanceRelative density |
Sustainability data
Material | Modified silane (MS) |
Literature
Fosroc® Flamex MS320 Technical Data Sheet
Fosroc® Flamex MS320 SDS
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