- Home Page /
- Tools & Home Improvement /
- Hardware /
- Adhesives & Sealers /
- Sealers /
- Flex Paste, Waterproof Paintable Putty, Spack...
0 ratings
Item #:
56769741
Flex Paste, Waterproof Paintable Putty, Spackle Sealant, Fill Gaps Cracks Holes - Block Out Water and Air - UV Resistant - Walls, Drywall, EPDM,
87% of respondents would recommend this to a friend
Item #:
56769741
XPF 1829
Price Details
Excluding Shipping & Custom charges ( Shipping and custom charges will be calculated on checkout )
*All items will import from US
0 ratings
Write a review
In stock
Imported from USA store
QTY:
Order now and get it around Thursday, October 01
Secured transaction
Ubuy works hard to protect your security and privacy. Our advanced payment security system ensures confidentiality by encrypting your information during transmission using AES (Advanced Encryption Standards) and SSL (Secure Socket Layer) protocols. Your payment details are 100% secure as we do not share your payment details with third party sellers.
Our Top Logistics Partners
Stop Leaks Fast
Fast
Shipping
Free
Return*
Secure Packaging
100% Original Products
PCI DSS Compliance
ISO 27001 Certified
Note: Step 1 Voltage Transformer required for using electronics products of US store (110-120). Recommended power converters Buy Now.
What Stands Out
Waterproof Sealant
Flex Paste effectively blocks water and air, ensuring a durable, waterproof seal for various surfaces, making it ideal for both indoor and outdoor repairs.
UV Resistant
Designed with UV resistance, this putty maintains its integrity and color when exposed to sunlight, making it suitable for outdoor use on roofs and RVs.
Versatile Application
Perfect for filling gaps, cracks, and holes in multiple materials like drywall and concrete, Flex Paste adapts seamlessly to diverse repair needs, offering exceptional value.
Product Details
- Super thick rubberized paste that clings to practically any surface
- Instantly fills large gaps, cracks, and holes
- Becomes a strong, flexible, watertight, rubberized coating once dry
- Seals out air, moisture, and water, preventing expensive damage
- Excellent waterproof sealant for windows, doors, vents, and thresholds
- Perfect for all types of indoor and outdoor repairs, DIY projects, crafts, and hobbies
| Brand Name | Flex Paste |
| UPC | 850010226859 |
| Unit Count | 1.0 Ounce |
| Number of Items | 1 |
| Part Number | PFSBLKR10 |
| Model | FLEX SEAL - PFSBLKR10 - BLACK |
| Item Type Name | Flex Paste 9 Oz. Cartridge - Black |
| Manufacturer | Swift Response, LLC |
| Included Components | Household Item |
| Water Resistance Level | Waterproof |
| Item Form | Paste |
| Compatible Material | Wood, Glass, Tile, Concrete, Aluminum, Metal, Stucco, Masonry, Copper, Fabric, Fiberglass, Ceramic, Porcelain, Natural Stones, Roofing, Pvc, Eifs, Cspe, Epdm, Hypalon Polyurethanes |
| Item Weight | 9 Ounces (255.15 grams) |
| Item Dimensions | 11.25 x 3 x 3 inches (28.6 x 7.6 x 7.6 cm) |
| Style Name | 9 oz Black |
| Color | Black |
| Surface Recommendation | Windows,Doors |
| Material Type | Rubber |
| Material | Rubber |
| Brand | Flex Paste |
| Style | 9 oz Black |
| Item dimensions L x W x H | 11.25 x 3 x 3 inches (28.6 x 7.6 x 7.6 cm) |
Dangerous Goods
To avoid the delay in customs clearance process for Dangerous Goods, the shipment shall be opened at our warehouse facility to check the severity of hazardous components. Please see the list of Dangerous goods here.
Who Should Buy?
-
Homeowners
Ideal for homeowners needing to seal cracks and gaps in walls and ceilings for improved insulation and aesthetics.
-
DIY Enthusiasts
Perfect for DIYers who tackle various repair projects like filling holes or sealing joints in different materials.
-
Contractors
Useful for contractors looking for a reliable, waterproof sealant for various construction and repair applications.
-
High-Temperature Applications
Not suitable for use in high-temperature environments, which may compromise seal integrity and performance.
Product Description
Flex Paste, Waterproof Paintable Putty, Spackle Sealant, Fill Gaps Cracks Holes - Block Out Water and Air - UV Resistant - Walls, Drywall, EPDM, Concrete, Roof, RV Repairs, Black, Cartridge
Have any Query? Chat with us
Customer Questions & Answers
-
Question:
What is Flex Paste and how does it work?
Answer: Flex Paste is a versatile, black waterproof sealant formulated to fill gaps, cracks, and holes to block out water and air. It employs a thick, paste-like consistency that can be applied to various surfaces including walls. When applied, it adheres strongly to the material, forming a durable and flexible bond that withstands extreme weather conditions. This makes it ideal for both indoor and outdoor repairs, such as sealing leaky pipes, windows, and other areas prone to moisture. -
Question:
Can I paint over Flex Paste once it dries?
Answer: Yes, Flex Paste is paintable once fully cured. After applying and allowing it to dry, you can easily paint over it to match your existing decor. This feature is particularly useful for home improvement projects, as it provides a seamless look once painted. Just ensure that the paste is completely dry before applying paint to achieve the best results. -
Question:
Is Flex Paste UV resistant?
Answer: Absolutely! Flex Paste is specially designed to be UV resistant, making it suitable for outdoor applications. This means that it will not break down or lose its integrity when exposed to sunlight over time. Whether you're using it for exterior repairs or in areas with intense sunlight, Flex Paste maintains its effectiveness without discoloration or degradation. -
Question:
What surfaces can I use Flex Paste on?
Answer: Flex Paste can be used on a variety of surfaces, including wood, metal, concrete, and masonry. This versatility makes it perfect for many applications, including sealing cracks in walls or repairing outdoor furniture. For best results, ensure the surface is clean and dry before applying Flex Paste for optimal adhesion and durability. -
Question:
How long does it take for Flex Paste to cure fully?
Answer: Flex Paste typically cures fully within 24 to 48 hours, depending on the thickness of the application and ambient temperature. The initial setup is quick, allowing for immediate use after application, but for optimal performance and paint adhesion, it’s recommended to wait until it’s fully cured. This ensures that the sealant has achieved maximum strength and durability. -
Question:
How do I apply Flex Paste effectively?
Answer: To apply Flex Paste effectively, cut the nozzle to your desired bead size and use a caulking gun to dispense. Begin by cleaning the area you wish to repair, then squeeze the paste firmly into the gap, crack, or hole. Smooth it out with a putty knife for a clean finish. For best results, apply in cooler conditions and allow proper curing time before any use or painting. -
Question:
Can Flex Paste be used for outdoor repairs?
Answer: Yes, Flex Paste is designed for both indoor and outdoor use. Its waterproof and UV resistant properties make it an excellent choice for outdoor repairs such as sealing roofs, gutters, or around windows. Since it bonds effectively and protects against harsh weather conditions, it ensures lasting repairs and prevents further damage from moisture ingress. -
Question:
Is Flex Paste suitable for filling large holes?
Answer: Flex Paste is effective for filling both small gaps and larger holes, although for extensive repairs, it may be advisable to apply it in layers. This method allows it to cure effectively without sagging. It's perfect for use on walls or structures where significant damage has occurred, providing a solid repair solution while ensuring durability. -
Question:
How does Flex Paste compare to traditional spackle?
Answer: Flex Paste offers enhanced features compared to traditional spackle due to its waterproof, flexible, and UV resistant properties. Unlike basic spackle, which is typically intended for wall finishing, Flex Paste excels at creating a robust seal ideal for exterior and high-moisture environments. This versatility allows users to tackle a wider range of repairs effectively. -
Question:
Where can I buy Flex Paste in Wallis and Futuna Islands?
Answer: You can buy Flex Paste in Wallis and Futuna Islands from Ubuy, a reliable online platform that offers a wide selection of home improvement products. Ubuy provides access to various brands and quality items, including Flex Paste, making it simple to find exactly what you need for your repair projects.
FlexPaste Sealers Editorial Review
Flex Paste is a versatile and useful adhesive that can be used on a variety of surfaces, including wood, brick, and concrete. It can be used to fill cracks and holes, seal leaks, and even as bathtub caulk. A few customers have mentioned that it can be difficult to apply in tight spaces, but overall, it seems to do an excellent job of sealing and adhering surfaces.
Customer Reviews & Ratings
1 customers ratings
-
5 Star
100%
-
4 Star
0%
-
3 Star
0%
-
2 Star
0%
-
1 Star
0%
Review this product
Share your thoughts with other customers
Pros
- Versatile and can be used on a variety of surfaces
- Can be used to fill cracks, holes, and seal leaks
- Customers have reported success using it for various projects such as sealing a roof, repairing a water fountain, and even on a boat.
Cons
- Can be difficult to apply in tight spaces
Platform Trust & Buyer Confidence
JK
Jasmin
Verified buyer
“Great products and very good service: very easy and very fast international delivery.”
9 September 2026 · via Trustpilot
AG
Anke
Verified buyer
“Wonderful online shopping experience, smooth transaction from the start. Payment method works conveniently and delivery is unexpectedly fast and reliable. You go the extra mile for service. What makes this even more amazing, you deliver to Namibia. I will remain a happy Ubuy customer and will increase my purchases for sure! Thank you!”
10 September 2026 · via Trustpilot
H
Hazel
Verified buyer
“Very easy to find the products what you need, and so fast delivery, that’s why I highly recommended to others costumers to used ubuy.”
10 September 2026 · via Trustpilot
O
Opaleye
Verified buyer
“I received exactly what I ordered I was skeptical about your site because that was my first time to order. But the order came timely and neatly packaged. I was not disappointed. Thank you.”
11 September 2026 · via Trustpilot
AC
Adele
Verified buyer
“Easy to find and order what you want on the website. Delivery is quick to the UK”
8 September 2026 · via Trustpilot
Secure Checkout
Global Delivery
Easy Returns
Genuine Products
Product Price History
Important information
- Limitations : For products shipped internationally, please note that any manufacturer warranty may not be valid; manufacturer service options may not be available; product manuals, instructions, and safety warnings may not be in destination country languages; the products (and accompanying materials) may not be designed in accordance with destination country standards, specifications, and labeling requirements; and the products may not conform to destination country voltage and other electrical standards (requiring use of an adapter or converter if appropriate). The recipient is responsible for assuring that the product can be lawfully imported to the destination country. When ordering from Ubuy or its affiliates, the recipient is the importer of record and must comply with all laws and regulations of the destination country.
- Not all the products listed on Ubuy are for sale, as Ubuy is a global search engine. Products are subject to export/trade regulations.
XPF 1829
Order now and get it around Thursday, October 01
This item is not restrict in my country.(Please click on above link if this item is not restrict in your country, So our team will review and allow.)
QTY:
Secured transaction
PCI DSS compliant and ISO 27001:2022 certified, with encrypted payments and full buyer protection on every order.
Our Top Logistics Partners
Fastest cross-border delivery
Features & Benefits
- Flex Paste is a waterproof paintable putty, spackle sealant
- Clings to a wide variety of surfaces
- UV and mildew resistant
- Perfect for all types of indoor and outdoor projects and repairs
- Requires a caulk gun for use
Ubuy Assurance
Experience worry-free shopping with 100% original products, PCI DSS-compliant payment security, ISO 27001-certified data protection, the fastest cross-border delivery, free returns *, and secure packaging on every order.