Fortafix High Temperature Sealant

Fortafix High Temperature Sealant - HT Flueseal

Fortafix High Temperature Sealant - HT FlueSeal (Black)

A Cartridge applied water based Thixotropic Ceramic Sealing Compound designed for use where heat resistance is an important requirement. Specifically designed for use on all types of flues e.g. stainless steel, vitreous enamel, ceramic flue pipes, concrete and pumice block etc. It possesses good cohesion and application properties and will resist the effects of heat to temperatures of 1100°C. HT FlueSeal can be safely used as a fixing or jointing medium where resistance to the spread of flame or fire is a requirement.

Typically Used For
Fixing or joining ceramics, glass, metals, concrete, stone, silicate fibre materials and many other surfaces. Fire protection applications.

Suitable For
Thin films/Coating - Yes Bonding - Yes Encapsulation - No Thick Sections - No

Property		Value
Major Constituent		Alkali Silicate Glass, Inorganic Oxides
Ready Mixed or 2 part		Ready Mixed
Dispensable		Yes
Relative Viscosity		Viscous Paste - Thixotropic
Coverage Rate/Coating Thickness		45 m @ 3 mm diam bead 100m @ 2 mm diam bead
Softening Temperature (°C):		1000°C
Melting Temperature (°C):		1100°C
Wet Density (g.cm-3):
Colour:		Black
Compressive Strength:
Thermal Conductivity (W.m-1.K-1):
Thermal Expansion (x10-6C-1):
Dielectric Strength (KV.mm-1) @ RT:
Volume Resistivity (Ωcm) @ RT:
pH:		13
Expansion on Setting %:		0
Shrinkage (Linear %): 150-500°C
Shrinkage (Volume %): 150-500°C
Hardness Moh’s Scale
Oxidation Resistance		Excellent
Alkali Resistance		Can be re-dissolved at high pH & temperature
Acid Resistance		Excellent - except hydrofluoric
Cure Guide		Water based product - requires heat curing.
Shelf Life:		12 Months
Packaging:		300ml Euro Cartridge

Additional Information
Specifically designed for use on all types of flues e.g. stainless steel, vitreous enamel, ceramic flue pipes, concrete and pumice block etc This ready-mixed Sealing Compound is water based, and does not contain hydrocarbon resins or solvents Economical in cost and application Withstands temperatures up to 1100°C - Strong adhesive properties at all temperatures. It is used successfully with ceramics, glass, metals, concrete, stone, silicate fibre materials and many other surfaces, either to themselves or to each other. Good cohesion - and will give good joint and gap-filling properties Product will resist the attack of organic solvents, oils, mould, fungi and acids. Sets to a hard and rigid ceramic mass which should not deteriorate under thermal shock, or age, under normal conditions. Hardens by air drying and operational heat which improves and strengthens seals and joints. Water resistance will be improved by the application of heat. RoHS compliant.

Application
IT IS ESSENTIAL THAT ALL SURFACES TO BE BONDED ARE FREE FROM OIL, DUST OR ANY FORM OF SURFACE COATING OR CONTAMINATION. For product supplied in canisters - Stir contents of the container prior to use, to overcome the effects of any settlement of the ingredients during storage. Ensure that all surfaces to be bonded sealed or insulated, are degreased, clean and free from contamination. A light surface abrasion of the material to be bonded will increase the amount of surface area available for adhesion and will give improved mechanical key. Apply the adhesive to all surfaces to be bonded. Join and apply moderate pressure to ensure even anchorage and solid contact of the surfaces to be bonded, ensure that all surface are fully wetted by the adhesive. Secure the components and allow the adhesive to set and harden.

Curing
This product is water based. In order to cure of the material it is necessary to fully dry & dehydrate the adhesive, by heating as gently & progressively as time and circumstances will allow. The ease by which full curing can be achieved is dependant on the porosity of the substrate, as well as the amount of available surface through which the adhesive film can dry. The cement should be allowed to harden at a minimum air temperature of 20°C until initial set has taken place. After this period the hardening process may be accelerated using the following typical schedule; Heat from 20° to 80°C @ 4°C per minute (15 minutes). Hold for 10-20 minutes Heat from 80° to 140°C @ 2°C per minute (30 minutes). Hold for 120-180 minutes Heat from 140° to 200°C @ 0.2°C per minute (300 minutes). Above 200°C - raise temperature @ 1°C per minute to required temperature, allow to cool progressively. Hardening and curing times given are approximate in view of possible variations in adhesive volume, glue line thickness, and substrate conditions, all of which will influence curing times.

Associated Documents
MSDS - Fortafix HT Flueseal