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MasterSeal

10-Ounce, Redwood Tan Np1 Polyurethane Sealant, Tube

Mfg.#
NP1RDWTAN
Sku#
2567121
  • One-component, elastomeric, gun-grade polyurethane sealant
  • Ready to apply; no mixing required
  • No primer required for application to most substrates
  • Weather resistant; provides long lasting weather tight seals
  • Wide temperature application range; suitable for all climate conditions

* Estimated stock levels as of Thu, Apr 2, 2026. All items subject to prior sale. Prices may vary between stores and online. Please call ahead to confirm availability of items marked as Limited Stock.

Description

BASF MasterSeal NP1 Caulk polyurethane sealant, formerly Sonneborn NP 1, is a one-component, high performance, no-priming, gun-grade, elastomeric polyurethane sealant. It comes in eleven standard colors, requires no mixing and typically requires no priming to bond too many materials, including concrete and masonry wood. This reputable polyurethane sealant is ready to use and requires no mixing which reduces labor cost. Joint movement capability is 35% which allows for excellent flexibility for keeping moving joints tight. Gunning and tooling is easy which speeds up application while making neater joints.

Specifications

General

Applicable Materials Wood, Metal, Concrete, Stone, Other Masonry
Color Redwood Tan
Density Approx. 1.20 g/cm3 ( 20 C)
Form Paste
Lower Flammability Limit 1 %(V) Information applies to the solvent.
Material Polyurethane
Net Content 10.1 oz
Odor/Scent Slight odor
Resists Weather,
Shelf Life 1 year when properly stored
Tensile Strength 350 (2.4)
Type Polyurethane sealant
Upper Flammability Limits 6 %(V) Information applies to the solvent.
VOC Content 35g/L less water and exempt solvents

Manufacturing Details
The following information is subject to change without notice

Country of Origin US
Manufacturer Warranty 5 year
Prop 65 Warning Warning WARNING: This product can expose you to chemicals including TITANIUM DIOXIDE (AIRBORNE, UNBOUND PARTICLES OF RESPIRABLE SIZE), which is known to the State of California to cause cancer, and TOLUENE, which is known to the State of California to cause birth defects or other reproductive harm. For more information, go to www.P65Warnings.ca.gov.
Shop USA Yes

Dimensions

Dimensions 2 in L x 2 in W x 12-1/4 in H
Size 10 oz
Weight 11.2 lb

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Msds (PDF)

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