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 Model Number |
Sinaflex -221B |
Sinaflex ® -221B is a one-component, moisture-curable, polyurethane-based, elasto- meric adhesive sealant. It is a fast curing, non-sag system. After curing, it provides a permanently elastic bond to fasten materials with different coefficients of expansion.
ADVANTAGES
l Good Adhesion to a wide range of substrates.
l Cures rapidly to a permanently elastic consistency with excellent cut and tear resistance.
l Low odor, non-staining.
l Surface paintable with water, oil, and rubber based coatings.
l Non-Corrosive.
l Provides shock resistance and vibration damping.
l Exhibits high recovery (> 90%), making it ideal for sealing dynamically moving joints.
l Weather resistant.
l Resistant to road salts.
l USDA approved for incidental food contact.
l NSF approved for potable water (black and white only)
CHARACTERISTICS
Appearance Paste
Color Black/White/Gray
Density (DIN 53479) 1.2 ± 0.1 kg/l
Sagginess 0 mm
Cure mechanism Moisture-curing
Tack-free time* 30-60 min
Rate of cure* 3-5 mm per 24 hrs
Shore A hardness (DIN 53505) 35-55
Tensile strength (DIN 53504) �2.0 N/mm2
Elongation at break (DIN 53504) �450%
Tear strength (DIN 53515) �7 N/mm
Tensile-shear strength (EN 1465) for a 4 mm applied thickness �1.5 N/mm2
Glass transition temperature (DIN 53445) -45°C, approx.
Service temperature (continuous)
Short �term (up to 48 hrs) -45°C to +90°C
120 °C
Shelf life (storage below 25°C) 9 months
*= at 23°C and 55% relative humidity
APPLICATIONS
l Vehicle bodies and cab construction including panels, underbody components, and roofing.
l Front and rear spoilers, auto trim, moldings, body seams, and welded joints.
l Waterproofing exterior lap seams in many applications, including truck trailers, RV's, metal roofs, window perimeters, grain bins and HVAC units.
l Waterproofing rivet seams.
l Sealing of exposed and concealed joints of aluminum, steel, coated metals, wood, roof rails, and door hinges in transport equipment.
l Sealing and caulking expansion joints, pre-cast concrete panel joints and joints between logs on log homes.
PROCESS
Cleaning:
Clean surface with a strong jet of compressed air, sandblast, or solvent to ensure the surface being clean, dry, free of oil, grease, and of sound quality.
Activating/Priming:
Activators and/or primers may be required to achieve optimal adhesion depending on the nature of substrates.
Application of sealant:
Cut tip to desired shape and size. Puncture airtight seal. Install with hand or power operated gun and extrude the sealant into the joint. Clean excess sealant using hard rubber plate or finger wet with soap solution.
PACKAGING
l 310ml cartridge;
l Flexible Package: 300ml, 400ml, 600ml;
l Drum: 250kg
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