Sappolo® Bond 7937 is a silicone alkyl terminated polyether, a medium-high viscosity moisture-curing sealant. As a part of the new generation of ultra-high-quality adhesives Sappolo® Bond 7937 combines the strength advantages of polyurethane and the durability of silicone. With a long operating period and high modulus Sappolo® Bond 7937 has high elasticity is resistant to UV and has excellent weather-resistant qualities. Free of solvents and isocyanates Sappolo® Bond 7937 offers great environmental protection.
Typical Applications
Joint sealing for OEM vehicle production and glass installation
Windscreen aftermarket bonding
Various construction joint sealing and roofing applications
Floor bonding to multiple materials
CHARACTERISTIC BEFORE CURING
TYPICAL VALUE RANGE
Color White / Black / Grey paste
Base material chemical Silanemodified polyether
Density (g/cm3) 1.45 1.35-1.55
(GB/T13354-1992)
Tack free time (min) 10 10-30
(23°C/50%RH)
Pressure flow viscosity (s/10g) 12 5-30
(0.5MPa, 23°C, 3mm)
CHARACTERISTIC AFTER CURING
TYPICAL VALUE RANGE
Room temperature vulcanized depth
(mm/24h) 4.0 3~4
Tensile strength(MPa) 3.0
(GB/T528-1998)
Elongation at break (%) 400 ≥300
(GB/T528-1998)
Harness: Shore-D 55 50~60
(GB/T 531-1999)
Work temperature(°C) -40~100
Short use temperature(°C) 120
INSTRUCTIONS FOR USE--Windshield Bonding
GLASS REMOVAL
Damaged glass should be removed in accordance with the vehicle manufacturer’s instructions.
PREPARATION
Remove old PU from the aperture leaving. All surfaces must be clean, dry, and free from all traces of dust, dirt.
More detailed information on these products can be found in the individual MSDS, this information is intended
as general advice only.
APPLICATION
Cartridges – Pierce the cartridge membrane
Sausages – Place sausage in the application gun and cut off closure clip. The tip of the nozzle is to be snipped
or trimmed and screwed onto the cartridge. If using a sausage attach the nozzle using the adaptor to the sausage. Cut the nozzle in a ‘V’ shape to the required height.
We recommend to use a piston type application gun. To ensure a uniform thickness and height of the adhesive
we recommend that you apply the product in a triangular bead form. All glass must be installed within a maximum of ten minutes from adhesive application.
Sappolo® Bond 7937 is suitable for use in a wide range of climates but the ideal environmental conditions for
use is between 10-30 degrees Centigrade and 50-70 % humidity.
AFTER APPLICATION AND CLEANING
Once cured the product can only be removed mechanically.
PACKAGE
White, Grey, Black – 310ml Cartridge 10 or 30 Cartridge per box