(🎁Hot Sale - SAVE 49% OFF) New Type Waterproof Sealant Mastic🔥BUY 5 GET 5 FREE & Free Shipping

$5.65 $11.30 Save $5.65
💋Normally You Need 10 To Meet All Your Family Needs👇:  1 PC
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🎁💐Don't forget to get some for your family and friends as it's an unique gift idea.
This week's special event: Randomly selected 20 lucky customers to get double the order product every day. We will send you an email, please remember to check, thanks for your support❤️❤️

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🔥3,155 sold in last 24 hours🔥 🔥99.3% of Reviewers Recommends This Product.

It's an unique gift idea. 🔥The QTY is limited!🔥Please make sure to buy enough quantity before we increase the price!!!

👉We provide the following LIMITED TIME OFFER for each customer:

  • 🔥Buy 3 Get 2 Free (Get 5 pcs)

  • 🔥Buy 4 Get 3 Free (Get 7 pcs)

  • 🔥Buy 5 Get 5 Free (Get 10 pcs) & Free Shipping

  • 🔥Buy 6 Get 8 Free (Get 14 pcs) & Free Shipping

(No need to use promotional codes, the system will automatically reduce the price after adding to the shopping cart.)


Size: 133*61mm
Material: Clay

Instructions for use
Unpacking can be used. First clean the gap that needs to be sealed to ensure that there is no dust, water, debris and other debris, and then stuff with mastic to the gap 3-5 cm, the surface can be smoothed with hands or tools. Repeat the above operation after 3 to 5 days as gaps may appear at the shrinkage edges.
Easy to use, save money on maintenance!


🌍1.The clay can be reshaped according to the size of the holes/slits
🌍2.The clay can be perfectly blended with the surface.
🌍3. It only takes 3-5 days to air dry. It is flame retardant and waterproof.

It is made of an environmentally friendly engineering material that is waterproof and corrosion-resistant. Super soft for deformation. Easy to reshape depending on the thickness of the wall and the size of the gap, completely fits the air-conditioning hole, mouse hole, socket, and so on. It can effectively prevent animals from entering. Moreover, its good adhesion makes it perfect for patching holes.
Made of industrial-grade materials with high resilience. Pre-mixed cement that features self-contained cooling and is waterproof. Automatically fix objects after 10 minutes of air drying.
HIGHLY FLEXIBLE & DURABLE - Final membrane has over 1000% elongation preventing adhesion failure, and is UV Stable stopping the sun from degrading the product

PROTECTIVE FINISH FOR - Flat roofs, metal roofs, sloped roofs, planter boxes, foundations, sheds, basements, metal, wood, concrete and more

🌍Environmental protection materials, care for your health🌍


Q:Can this be used to seal around a heating pipe, or can you recommend something else?

A: Yes. It expands to fill holes, cracks, gaps and voids around windows, doors, pipes, outlets, vents.
Q: Can the mouse holes on the wall be filled? Is it sturdy?
A: Yes, our product has the effect of preventing insects and mice. After drying, it becomes very hard and mice cannot chew through it.
Q: Does it have any odor? Are the materials safe?
A: We use environmentally friendly materials that are safe, non-toxic, and odorless.
Q: How long can the product be stored? How should it be stored?
A: Our products have a good shelf life, and unopened items can be stored for up to one year. But due to the nature of the clay, we recommend using the product or storing it in a sealed bag as soon as it's been opened (it can be stored for up to six months under normal conditions).
Q: How long will it stay tacky? How do I remove it?
A: Our products have a good sealing capability and can remain hard for 1-2 years after air drying. If removal is necessary, you can use a hammer to break and remove it.
Q: How many packs of Sealant Mastic are needed to fill a hole in an air conditioning vent?
A: Usually, it takes about 2-3 packs of Sealant Mastic for a typical air conditioning vent hole (for reference only, it depends on the specific hole size). Our product has versatile applications, so we recommend taking advantage of the promotional period and purchasing multiple packs.
🎁It's a perfect gift for your family & friend!


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    • We take pride in our products as we believe they are amazing. However, we understand that buying things online can be daunting, especially for the first time, so we offer a 100% satisfaction guarantee.
    • If you don't have a positive experience for any reason, we will do whatever it takes to make sure you are 100% satisfied with your purchase.

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We mean it! If you are unhappy in any way within the first 30 days,we will sort out the return label for you and issue a full refund,hassle-free,no questions asked.