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Masterseal NP-1 Polyurethane Sealant 10.1 oz Limestone

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MasterSeal NP 1 is a one-component, high performance, non-priming, gun-grade, elastomeric polyurethane sealant. It requires no mixing and typically requires no priming to bond to many materials, including concrete and masonry.


Application 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
Base Type Polyurethane
Color Limestone
Curing time (hours) 7 days
Size 10.1 oz
Standards ASTM C 920, Type S, Grade NS, Class 35, Use NT, M, A, T, O* and I; Federal Specification TT-S- 00230C, Type II, Class A; Corps of Engineers CRD-C- 541, Type II, Class A; Canadian Specification CAN/CGSB-19.13-M87, Classification MCG-2-25-A-N, No. 81026; CFI accepted; USDA compliant for use in meat and poultry areas; Underwriters Laboratories Inc. classified (fire resistance only); ISO 11600-F-25LM
Temperature Range -40°F to 180°F
Tensile Strength 350 psi
Type Multipurpose Sealant
V O C Content 35g/L less water and exempt solvents