About Sikaflex 127 Concrete Grey Pu Sealant Application Joint Filling
91 000 74051 Sikaflex Construction is designed for movement and connection joints on porous substrates as well as indoor and outdoor sealing applications.
AdvantagesOne component, ready to useFast-curingNon-sagBubble-free curingCan be overpaintedHigh tear resistanceVery good adhesion to many substratesGood weather and ageing resistance
Outstanding Flexibility and PerformanceSikaflex 127's unique polyurethane formulation enables it to accommodate movements up to 25%, making it perfect for sealing expansion and construction joints. After curing, it displays high elasticity and a Shore A hardness of approximately 40, providing strong yet flexible adhesion even under changing temperatures and weather conditions.
Easy Application and Fast CuringThe sealant applies as a smooth, uniform paste and begins to skin within 60 minutes, becoming tack-free in about 70 minutes at standard conditions (23C, 50% r.h.). It can be used within a wide temperature range and is suitable for both professional and DIY joint filling and gap sealing projects in construction and masonry work.
Safe, Reliable, and Long LastingSikaflex 127 is non-poisonous once cured and emits only a slight characteristic odor. With a 12-month shelf life when stored unopened and protected from sun/heat, it ensures reliability and convenience for suppliers, traders, and service providers throughout India. Its weather resistance makes it ideal for indoor and outdoor use.
FAQ's of Sikaflex 127 Concrete Grey Pu Sealant Application Joint Filling:
Q: How do I apply Sikaflex 127 Concrete Grey PU Sealant?
A: Sikaflex 127 should be applied to clean, dry surfaces using a standard caulking gun. Cut the nozzle to the desired joint width, insert the cartridge or sausage into the gun, and apply a consistent bead along the joint. Smooth with a suitable tool before skin forms (within 60 minutes). Clean tools with Sika Remover-208 or an appropriate solvent before the sealant cures.
Q: What surfaces are suitable for Sikaflex 127 application?
A: This sealant is specifically designed for concrete and masonry surfaces but also adheres well to various construction materials. It is ideal for filling expansion joints, perimeter joints, and sealing gaps in new or existing concrete structures.
Q: When does Sikaflex 127 become tack-free and fully cured?
A: At 23C and 50% relative humidity, the sealant becomes tack-free in approximately 70 minutes and forms a skin in about 60 minutes. Full curing time depends on joint size and environmental conditions, but initial handling can generally be done after 24 hours.
Q: Where can Sikaflex 127 be used effectively?
A: Sikaflex 127 is suitable for both interior and exterior use across a range of climates, thanks to its service temperature range from -40C to +70C (with short-term resistance up to +90C). Common applications include expansion joints, connections between concrete panels, and perimeter sealing.
Q: What are the main benefits of using Sikaflex 127 PU Sealant?
A: The sealant offers high elasticity (elongation at break >500%), excellent weather resistance, neutral pH after curing, and outstanding adhesion to concrete and masonry. It remains flexible and effective under dynamic movement and varying temperatures, ensuring long-term joint integrity.
Q: Is Sikaflex 127 hazardous or poisonous after curing?
A: Once fully cured, Sikaflex 127 is non-poisonous and safe for general construction and building applications. It emits a slight odor during application, which dissipates after the curing process is complete.
Q: What storage conditions are recommended for Sikaflex 127?
A: Store the unopened sealant in a cool, dry place, out of direct sunlight, and within the temperature limitations stated by the manufacturer. Proper storage extends the product's shelf life up to 12 months from the date of production.