Introducing a groundbreaking solution for all your sealing and repair needs – our versatile, easy-to-use mastic sealant
![]()
Effortless Application
Our mastic sealant redefines ease of use:
- Mold it to fit any hole or gap size for a perfect repair.
- Seamlessly blends with surfaces for an invisible fix.
- Quick air-drying in about 10 minutes, saving time and effort.
- Flame retardant and waterproof for added safety and durability.
Unmatched Flexibility and Durability
Experience over 1000% elongation with our mastic sealant, ensuring it won’t crack or peel over time. Its UV stability protects against sun damage, making it a reliable choice for a variety of surfaces and environments.
![]()
Perfect for a Wide Range of Surfaces
Whether it’s flat or sloped roofs, planter boxes, foundations, sheds, basements, or various materials like metal, wood, and concrete – our mastic sealant provides a protective and enduring finish.
![]()
![]()
Eco-Friendly and Health-Conscious
Committed to your health and the environment, our sealant is made from eco-friendly materials. It’s the responsible choice for your sealing and repair needs.
![]()
The Ultimate Sealant for All Your Repair Needs
Don’t just fix it, improve it! Our mastic sealant is the perfect blend of performance, convenience, and sustainability. Ideal for both professionals and home DIY enthusiasts, it’s your go-to solution for a variety of repair and maintenance tasks. Order now and experience the ease and reliability of our premium mastic sealant!
Product Specifications
- Material: Premium quality mastic.
- Weight: 21.5g, perfect for multiple applications.
- Package Size: Compact and convenient at 133*61mm.
We are proud to offer international shipping services that currently operate in over 200 countries and islands world wide. Nothing means more to us than bringing our customers great value and service. We will continue to grow to meet the needs of all our customers, delivering a service beyond all expectation anywhere in the world.
How do you ship packages?
Packages from our warehouse in China will be shipped by ePacket or EMS depending on the weight and size of the product. Packages shipped from our US warehouse are shipped through USPS.
Do you ship worldwide?
Yes. We provide free shipping to over 200 countries around the world. However, there are some locations we are unable to ship to. If you happen to be located in one of those countries we will contact you.
What about customs?
We are not responsible for any custom fees once the items have shipped. By purchasing our products, you consent that one or more packages may be shipped to you and may get custom fees when they arrive to your country.
How long does shipping take?
Shipping time varies by location. These are our estimates:
| Location |
*Estimated Shipping Time |
| United States |
10-30 Business days |
| Canada, Europe |
10-30 Business days |
| Australia, New Zealand |
10-30 Business days |
| Central & South America |
15-30 Business days |
| Asia |
10-20 Business days |
| Africa |
15-45 Business days |
*This doesn’t include our 2-5 day processing time.
Do you provide tracking information?
Yes, you will receive an email once your order ships that contains your tracking information. If you haven’t received tracking info within 5 days, please contact us.
My tracking says “no information available at the moment”.
For some shipping companies, it takes 2-5 business days for the tracking information to update on the system. If your order was placed more than 5 business days ago and there is still no information on your tracking number, please contact us.
Will my items be sent in one package?
For logistical reasons, items in the same purchase will sometimes be sent in separate packages, even if you've specified combined shipping.
If you have any other questions, please contact us and we will do our best to help you out.
Order cancellation
All orders can be cancelled until they are shipped. If your order has been paid and you need to make a change or cancel an order, you must contact us within 12 hours. Once the packaging and shipping process has started, it can no longer be cancelled.
Refunds
Your satisfaction is our #1 priority. Therefore, you can request a refund or reshipment for ordered products if:
- If you did not receive the product within the guaranteed time( 45 days not including 2-5 day processing) you can request a refund or a reshipment.
- If you received the wrong item you can request a refund or a reshipment.
- If you do not want the product you’ve received you may request a refund but you must return the item at your expense and the item must be unused.
We do not issue the refund if:
- Your order did not arrive due to factors within your control (i.e. providing the wrong shipping address)
- Your order did not arrive due to exceptional circumstances outside the control of Bestsellers Paid (i.e. not cleared by customs, delayed by a natural disaster).
- Other exceptional circumstances outside the control of
*You can submit refund requests within 15 days after the guaranteed period for delivery (45 days) has expired. You can do it by sending a message on Contact Us page
If you are approved for a refund, then your refund will be processed, and a credit will automatically be applied to your credit card or original method of payment, within 14 days.
Exchanges
If for any reason you would like to exchange your product, perhaps for a different size in clothing. You must contact us first and we will guide you through the steps.
Please do not send your purchase back to us unless we authorise you to do so.
Unlike traditional clay, this product is quite different. It's surprisingly lightweight and incredibly malleable. I employed it to seal the connection between my portable air conditioner duct and the window panel, and it matched perfectly due to its white color. Applying it was a breeze because it tears easily by hand and conforms effortlessly to any surface. Plus, it adheres well.
The putty is white, and while it may not seamlessly blend with all surfaces, it would be beneficial if it were offered in a range of color options to better match different materials.
I bought this product to address some gaps in my house, specifically around doors and baseboards, which were too large to be filled with caulking. It comes in a white color that blends seamlessly with my existing white baseboards. It doesn't dry completely rigid; instead, it retains a slight flexibility, similar to how silicone dries.
Just as advertised, this putty is genuinely waterproof, making it indispensable for sealing tasks in areas prone to moisture, like bathrooms and kitchens.
I used it to conceal small nail holes from the past, and it worked wonderfully! Thank you.
This is hands down the best and easiest material to work with; it feels like a fantastic little trick I've discovered. I absolutely adore it! I highly recommend giving it a try.
I dislike working with foams, so this product is excellent for smaller tasks. However, if you have to seal a significant amount, it may not be the most cost-effective choice.
This putty demonstrated its versatility and adaptability in various applications. I utilized it to seal gaps around drain connections, fill wall holes, and even secure air conditioning installations. Its versatility makes it a valuable addition to any DIY toolkit.
I've simply covered all the ant entry points with this, and it has effectively reduced the ant presence in my home by 90%. Now, I only need to be vigilant about identifying and sealing any new ant entry points as they arise.
I had to patch a hole at the bottom of our door frame, and this product was a perfect solution. It came neatly packed in these small bags, which helped to keep the clay from drying out as I worked with it.