SKU: 33233113806

Sonneborn MasterSeal NP1 121.2-oz Limestone Paintable Polyurethane Window and Door Caulk

Sale price$12.59 Regular price$13.99
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Ships within 48 hours · Estimated delivery Jul 12 - Jul 17

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Description

Sonneborn MasterSeal NP1 121.2-oz Limestone Paintable Polyurethane Window and Door CaulkMasterSeal 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. Recommended uses: Interior and exterior Above and below grade Immersed in water Expansion joints Panel walls Precast units Aluminum and wood window frames Roofing Fascia Parapets Vinyl siding Store front assemblies What are the

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.

Recommended uses:

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

What are the unique features of MasterSeal NP 1?
Available in ProPaks, reducing jobsite waste, lowering disposal costs
12 standard colors to match 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

What are the benefits of MasterSeal NP 1?
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

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 33233113806

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ReadingWriteNow
Boise, US
★★★★★ 5
They work very well.
Number of Items: 2
I love these. I use them to wrap my tumbler before sublimating them in my sublimation oven. They work every well to let me see the process so I don’t scorch my design.
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Reviewed in the United States on October 16, 2025
C
Verified Purchase
Christina M Webb
Dallas, US
★★★★★ 5
PERFECT HEAT TAPE
Number of Items: 6
Love this heat tape - it's clear so no worry about color transferring to products from heat transfer, very functional for these uses. I have ordered this several times and this is my product of choice for my sublimation needs. Sticks well to product, no residue left on products, easy to use, easy to remove after use, very durable for sublimation use.
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Reviewed in the United States on May 28, 2025
B
Verified Purchase
Beth Seward
Lake Worth, US
★★★★★ 5
Works very well
Number of Items: 4
As described, I love that is clear
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 10, 2026
B
Verified Purchase
Bea Rosey
San Leandro, US
★★★★★ 5
Great tape for sublimation!
Number of Items: 4
Love love this tape. I used amber colored tape in the past and the color would transfer onto what I was making. This sticks well, is wide so it adds extra durability, and does not transfer color! If you’re just starting your sublimation journey, I highly recommend using this tape!
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Reviewed in the United States on February 11, 2026
A
Verified Purchase
Amanda
Lowell, US
★★★★★ 5
Good quality
Number of Items: 4
Great tape for using with a heat press. It doesn’t leave any marks and comes up easy. I use it for taping down sublimation stuff and have had no issues on slate, shirts, metal or anything I’ve made it sticks well and comes off easy.
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Reviewed in the United States on July 20, 2025

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