Description TYPICAL USES MasterSeal NP 472 is ideal for sealing joints that experience dynamic movement, such as expansion and control joints. It exhibits high elasticity and recovery, making it suitable for bonding and sealing common building materials like concrete, glass, wood, stone, metal, and anodized aluminum. Additionally, it has excellent tear resistance and weathering properties. ADVANTAGES Provides a durable, resilient seal Non-staining No primer required (except for M1 smooth mortar) Good resistance to dilute acids and alkalis Available in various colors PACKAGING MasterSeal NP 472 is available in 310ml and 600ml cartridges. COLOURS MasterSeal NP 472 comes in the following colors: Concrete Grey (RAL 7004) Off White (RAL 1015) White (RAL 9010) STANDARDS Conforms to ISO 11600 Class F25LM for anodized aluminum and mortar Conforms to ASTM C920 Type S, Grade NS, Class 25, use NT and M Conforms to DIN 18540 TECHNICAL DATA Skin formation time (23°C, 50% RH): 120 minutes Cure rate (23°C, 50% RH): > 2.5mm in 24 hours Resistance to flow (ISO 7390): 23°C: < 3mm 50°C: < 3mm Shrinkage (ISO 10563): < 10% Application temperature: 5°C to 40°C Specific gravity: 1.2g/cm³ Shore A Hardness (ISO 868): 15-20 E-Modulus at 100% (ISO 8339): 0.15-0.20N/mm² Elongation at break (ISO 8339): >500% Elastic recovery (ISO 7389): >70% Movement Accommodation Factor: ±25% Service temperature: -30°C to 70°C APPLICATION Preparation: To ensure optimal adhesion, clean and prepare the joint profile, including the edges, ensuring the surface is dry, sound, and free of any contaminants that could affect bonding. Application: MasterSeal NP 472 should be applied using a standard sealant application gun, ensuring sufficient sealant is applied to achieve the correct joint width and depth ratio. After application, tool the sealant into place to ensure good adhesion. Finish with a neat appearance using a soap and water solution on a gloved finger or tooling stick. Note: Long-term UV exposure may cause discoloration of MasterSeal NP 472, but this will not impact its performance.
