| 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 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) | ³ 2.0 N/mm2 | Elongation at break (DIN 53504) | ³ 450% | Tear strength (DIN 53515) | ³ 7 N/mm | Tensile-shear strength (EN 1465) for a 4 mm applied thickness | ³ 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 |
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