The grey sealant is especially suitable for roof sheets, panels, sheet metal flashings, gutters, rainwater systems, chimney joints, concrete joints, metal structures and prefabricated elements. Thanks to its thixotropic, non-sag consistency, it is easy to apply on vertical joints and overhead surfaces.

Technical information
Product type: polyurethane sealant / adhesive-sealant
Manufacturer: Akfix
Model: 637FC
Type: Fast Cure
Base: polyurethane / PU
Components: one-component
Consistency: thixotropic / non-sag
Modulus: high modulus
Colour: grey
Volume: 310 ml
Application: bonding and sealing
Paintable: yes, after full curing
Use: indoor and outdoor applications

Benefits

✔ Fast-curing – helps continue work faster
✔ Permanently elastic – absorbs joint movement and vibration
✔ Strong adhesion to many construction and industrial surfaces
✔ Non-sagging – suitable for vertical joints and overhead applications
✔ Resistant to moisture, water, salt water, UV radiation and weather conditions
✔ Resistant to ageing and mild chemicals
✔ High mechanical resistance for structures exposed to vibration and loads
✔ Easy to apply with a standard sealant gun
✔ Easy to smooth and shape
✔ Paintable after full curing
✔ Grey colour matches concrete, galvanized sheet metal, grey façades and floors

Suitable surfaces

Akfix 637FC adheres well to many construction materials, usually without primer:

Concrete
Masonry
Bricks
Roof tiles
Metal
Aluminium
Stainless steel
Galvanized sheet metal
Wood
Ceramics
Glass
Some plastics, e.g. PVC

For non-standard, painted or plastic surfaces, an adhesion test is recommended before application.

Application areas
Sealing of roof sheets, roofing elements and sheet metal flashings
Panel installation and sealing
Sealing of gutters, rainwater systems and chimney joints
Sealing of concrete floors, pathways, façades and expansion joints
Joint sealing of prefabricated concrete elements
Sealing of ventilation ducts and air conditioning system joints
Sealing of car bodies, trailers, containers, caravans and boat structures
Bonding of metal parts and sealing of seams
Vibration reduction in metal assembly works
Filling gaps between window or door frames and concrete / masonry walls
Bonding of window sills, thresholds, stairs, panels and prefabricated elements
Joint sealing in wooden, metal and concrete structures

Akfix 637FC PU sealant 310 ml, grey is a reliable solution for sealing and bonding roof sheets, panels, concrete joints, metal structures and other construction or industrial surfaces where fast curing, elasticity and durability are required.