H.B. Fuller FulaFlex 620 600ML

Description

Fulaflex 620 is a high performance, isocyanate free methoxysilyl-terminated silane polymer designed for use as a low-modulus construction sealant. Fulaflex 620 cures to form a seal that is tough, elastic and weatherproof with good chemical resistance. Fulaflex 620 is suitable for use in situations that may experience significant expansion and contraction. Fulaflex 620 is easy to apply and tool off.

Benefits

• ISO 11600 Type F, Class 25, sub-class LM
• Tested to AS1530.3-1999 (Report 21002528) o Spread of Flame Index = 0 o Heat Evolved Index = 3 o Smoke Developed Index = 2
• Meets the criteria of a sealant for use in AS3740-2010 (Waterproofing of Domestic Wet Areas) waterproofing applications
• Isocyanate and solvent free
• Highly flexible – 25% of original joint width.
• Excellent resistance to weathering and UV radiation, resists yellowing
• Mould Resistant – Will not support fungal growth
• Excellent long term chemical resistance to seawater, caustic solutions and cleaning agents
• Short term chemical resistance to petrol, grease and mineral oils
• No bubble formation when curing
• Paintable with high build, flexible emulsion coatings
• Does not sag or slump in joints up to 35mm
• Strong adhesion
• Sag Resistant

Uses

• Sealing expansion and control joints in tiling, walls, roofs, wall, door and window frame perimeters, cladding and brickwork.
• In applications where a level of chemical resistance is required.
• In seals where acoustic properties is required.
• As a waterproofing perimeter fillet beneath waterproofing membranes (refer to HB Fuller technical department for specific membrane recommendations) including those required to satisfy AS3740-2010
• As a sealant in fibre cement façade systems (pre-testing recommended – refer to HB Fuller sales representative or technical department)

VOC Content 

VOC content: (Californian South coast air quality management rule 1168) is 15g/L.

Limitations

• Avoid exposure to high levels of chlorine
• Do not use in joints deeper than 20 mm
• Avoid contact with alcohol and other solvent cleaners during cure phase
• Pre-testing is required on marble or other highly porous stone – finish may be affected
• Solvent-based coatings may remain tacky
• Do not use on bituminous surfaces
• Do not use on materials that bleed oil and plasticisers or solvents, as this will affect adhesion (e.g. most rubbers)
• Not a fire rated or glazing sealant. Not suitable for glazing use with glass, acrylic or polycarbonate sheets
• Not suitable for floor applications or foot traffic areas
• Not suitable for use in roofing lap joint applications where the sealant is feathered down to zero application weight – for such applications consider the use of silicone.
• Not suitable for swimming pools or hot tubs

Chemical Resistance

Long-term chemical resistance to fresh water, salt water, limewater, caustic solutions and cleaning agents. Short-term chemical resistance to petrol, grease and mineral oil. Not resistant to organic acids, concentrated mineral acids or solvents.