Fortafix High Temperature RTV Silicone

Fortafix High Temperature RTV Silicone - HT FLEXSEAL 350

Fortafix High Temperature RTV Silicone - HT FLEXSEAL 350

A cartridge applied Silicone based Sealant designed for use where a flexible bond is required together with high temperature resistance. This adhesive gives excellent adhesion between most substrates and, because of its high elasticity, is particularly suited for gap-filling applications and jointing materials of different thermal expansion characteristics & where vibration is a problem. Wide operating temperature range up to 350°C

Typically Used For
Flexible Joints for Flues & Ducting Electrical Insulation Fixing Ceramic Rope Gasketing Joining Metals, Glass, Ceramics, Polymers

Suitable For
Bonding - Yes Gasketing - Yes Thick Sections - Yes Potting/Encapsulation - Yes

Property		Value
Major Constituent		Ethyltriacetoxysilane
Ready Mixed or 2 part		Ready Mixed
Dispensable		Yes
Relative Viscosity		Non-slump paste
Coverage Rate/Coating Thickness		45m@3mm diam bead 100m@2mm diam bead
Softening Temperature (°C):		330°C
Melting Temperature (°C):		350°C
Wet Density (g.cm-3):		1.28
Colour:		Red
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:
Expansion on Setting %:
Shrinkage (Linear %): 150-500°C
Shrinkage (Volume %): 150-500°C
Hardness Moh’s Scale
Oxidation Resistance
Alkali Resistance
Acid Resistance
Cure Guide		Humidity and temperature (See note below).
Shelf Life:		12 Months
Packaging:		300ml Euro Cartridge

Additional Information
Test data: DIN 53505 S3A Tensile Strength: 1.4 N/mm2 Modulus @ 100% elongation: 0.6 N/mm2 Elongation at break: 420% Shrinkage: 3% Excellent adhesion to metals, glass, ceramics, polymers etc Gap filling & resistant to many solvents Provides a high temperature flexible joint for flues, ducting etc Resistant to weathering and ageing - can be used externally Wide operating temperature range up to 350°C

Application
IT IS ESSENTIAL THAT ALL SURFACES TO BE BONDED ARE FREE FROM OIL, DUST OR ANY FORM OF SURFACE COATING OR CONTAMINATION. 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 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, so that all surfaces are fully wetted. Secure the components and allow the adhesive to set and harden.

Curing
Product requires humidity and temperature for cure. Skin forming time @ 23°C/50%RH: 15 minutes Cure Rate @ 25°C/60%RH: 3 mm per 24 hours

Associated Documents
MSDS - Fortafix Flexseal 350 Flexseal 350 Oven Door Repair Method Statement