• Available in a wide variety of common substrates
• Wide temperature application range makes MasterSeal NP 1 suitable for all climates
• UL listed; Passes 4–hour, 4–inch, fire and hose stream test when used with Ultra Block or mineral wool
• Suitable for water immersion with documented performance in wet areas
• Meets VOC requirements in all 50 states
• One-component formula requires no mixing, helping to reduce labor costs
• Joint movement capability ±35% provides excellent flexibility for keeping moving joints weathertight
• Easy to gun and tool, speeding up application and making neater joints
• No primer required for most construction materials lowering installation costs
• Weather resistant for long-lasting weather tight seals
• Compatible with non-rigid coatings and can be painted
• Superior holding power for long-lasting roof tile installation

• ASTM C 920, Type S, Grade NS, Class 35, Use NT, M, A, T, O* and I
• Federal Specification TT-S- 541, Type II, Class A
• Corps of Engineers CRD-C- 531, Type II, Class A
• Canadian Specification CAN/CGSB-19.13-M8, Classification MCG-2-25-A-N, No. 81026
• CFI Accepted
• Underwriters Laboratories Inc.® classified (Fire resistance only)
• ISO 11600-F-25LM
• STC (Sound Transmission Class)

*Primed for water immersion dictated by ASTM C 920. Concrete and aluminum primed with P 173.
Test results are typical values obtained under laboratory conditions. Reasonable variations can be expected.

• Interior and exterior
• Above and below grade
• Immersed in water
• Expansion joints
• Panel walls
• Precast units
• Window frames
• Roofing
• Fascia
• Parapets
• Vinyl siding
• Store front assemblies

Application Details:

• Service Temperature Range -40 to 180°F (°C) (-40 to 82)
• Shrinkage: None

• Concrete
• Masonry
• Aluminum
• Wood
• Clay & concrete roof tiles
• Stucco
• Natural stone