---
product_id: 368828464
title: "MasterSeal NP1 10.1 Oz. Polyurethane Sealant, Black - Pack of 4"
brand: "masterseal np1"
price: "$148.83"
currency: USD
in_stock: true
reviews_count: 2
url: https://www.desertcart.us/products/368828464-masterseal-np1-10-1-oz-polyurethane-sealant-black-pack-4
store_origin: US
region: United States of America
---

# Permanent elasticity in sleek black Moisture-curing for ultimate durability 10.1 Oz. high-performance sealant MasterSeal NP1 10.1 Oz. Polyurethane Sealant, Black - Pack of 4

**Brand:** masterseal np1
**Price:** $148.83
**Availability:** ✅ In Stock

## Summary

> 🖤 Seal smart, seal strong — the pro’s choice for flawless joints!

## Quick Answers

- **What is this?** MasterSeal NP1 10.1 Oz. Polyurethane Sealant, Black - Pack of 4 by masterseal np1
- **How much does it cost?** $148.83 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/368828464-masterseal-np1-10-1-oz-polyurethane-sealant-black-pack-4)

## Best For

- masterseal np1 enthusiasts

## Why This Product

- Trusted masterseal np1 brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Bulk Pack Advantage:** Pack of 4 for uninterrupted project flow and cost efficiency
- • **Unmatched Versatility:** Seals everything from window frames to dams with ease
- • **Long-Lasting Flexibility:** Maintains permanent elasticity to handle structural movement
- • **Weatherproof Reliability:** Moisture-curing formula ensures superior performance in any climate
- • **Professional Grade Finish:** Sleek black color blends seamlessly with modern architectural designs

## Overview

MasterSeal NP1 is a 10.1 Oz. black polyurethane sealant designed for high-performance, moisture-curing applications. It offers permanent elasticity, making it ideal for active joints in both interior and exterior settings, including walls, pavements, and structural components. Sold in a convenient pack of 4, it ensures durability and professional-grade results across diverse construction and repair projects.

## Description

MasterSeal NP110.1 Oz. Polyurethane Sealant, Black - Pack of 4

## Features

- MasterSeal NP1 10.1 Oz. Polyurethane Sealant, Black
- A versatile moisture-curing high-performance polyurethane sealant with permanent elasticity (Formerly: Sonolastic NP 1).
- For use on active, vertical and horizontal interior, exterior joints including expansion wall joints, floor and pavement joints, curtain walls, panel walls, precast walls, window frames, structural components, dams, spillways, and storm water drains.
- Packaging may vary.
- Pack of 4.

## Product Details

- **Brand:** MasterSeal NP1
- **Item Weight:** 10.1 Ounces
- **Liquid Volume:** 10 Milliliters
- **Full Cure Time:** 7 Days
- **Initial Hardening Time:** 12 Hours

## Images

![MasterSeal NP1 10.1 Oz. Polyurethane Sealant, Black - Pack of 4 - Image 1](https://m.media-amazon.com/images/I/510f-K61qYL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Excellent sealant for roof penetrations.
*by N***Y on March 28, 2025*

This product is what I wanted. It may not be readily available but it’s worth the effort to get the right product for your project.

### ⭐⭐⭐⭐⭐ works great
*by K***X on February 19, 2025*

works great

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**Shop now:** [https://www.desertcart.us/products/368828464-masterseal-np1-10-1-oz-polyurethane-sealant-black-pack-4](https://www.desertcart.us/products/368828464-masterseal-np1-10-1-oz-polyurethane-sealant-black-pack-4)

---

*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-03-07*