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Item #:
219403008
Flex Paste Rubberized Waterproof Sealant Paste, White, MAX, 1-Pack
85% of respondents would recommend this to a friend
Item #:
219403008
BTN 4842
Price Details
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Imported from USA store
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Order now and get it around Thursday, September 24
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What Stands Out
Waterproof Formula
Flex Paste creates a durable, waterproof seal that blocks out water and air, making it ideal for various repairs including roofs and RVs, providing long-lasting protection.
UV Resistance
With UV resistance, this putty maintains its integrity and finish even under sunlight, ensuring reliable performance for outdoor repairs without degradation over time.
Multi-Surface Applicability
Designed to adhere to multiple surfaces such as drywall, concrete, and EPDM, Flex Paste is versatile, addressing diverse repair needs in both household and industrial applications.
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
- Can be used on windows, doors, vents, and thresholds
- Perfect for all types of indoor and outdoor repairs, DIY projects, crafts, and hobbies
| Brand Name | Flex Paste |
| UPC | 850017897489 |
| Number of Packs | 1 |
| Unit Count | 192 Ounce |
| Number of Items | 1 |
| Included Components | Flex Seal Family of Products - PFSMAXWHT01 |
| Item Type Name | Flex Seal Family of Products - PFSMAXWHT01 |
| Manufacturer | Swift Response, LLC |
| Model | Flex Seal FamilyofProducts - PFSMAXWHT01 |
| Part Number | Flex Seal FamilyofProducts - PFSMAXWHT01 |
| Item Dimensions | 7.75 x 6.75 x 6.75 inches (19.7 x 17.1 x 17.1 cm) |
| Water Resistance Level | Waterproof |
| Item Form | Paste |
| Compatible Material | Wood, Glass, Tile, Concrete, Aluminum, Metal, Brick, Stucco, Masonry, Copper, Fabric, Fiberglass, Ceramic, Porcelain, Natural Stones, Roofing, Pvc, Eifs, Cspe, Epdm, Hypalon Polyurethanes |
| Style Name | 12 lb White |
| Color | White |
| Surface Recommendation | Doors,Windows |
| Material Type | Rubber |
| Material | Rubber |
| Brand | Flex Paste |
| Style | 12 lb White |
| Item dimensions L x W x H | 7.75 x 6.75 x 6.75 inches (19.7 x 17.1 x 17.1 cm) |
| Package Weight | 15 Pound (6.8 kg) |
Who Should Buy?
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Homeowners
Ideal for homeowners looking to repair cracks and holes in walls, ceilings, and outdoor surfaces efficiently.
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DIY Enthusiasts
Perfect for DIY enthusiasts who want a versatile sealant for various projects including waterproofing and soundproofing.
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RV Owners
Highly beneficial for RV owners needing to seal leaks and repairs, ensuring no water gets into their vehicles.
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Professional Contractors
May not meet the standards for professional contractors seeking high-grade materials for large commercial jobs.
Product Description
Flex Paste Rubberized Waterproof Sealant Paste, White, MAX, 1-Pack
Have any Query? Chat with us
Customer Questions & Answers
-
Question:
What surfaces can Flex Paste be used on?
Answer: Flex Paste is versatile and can be used on a variety of surfaces, including walls, drywall, EPDM, concrete, and roofs. This makes it ideal for both indoor and outdoor applications. Whether you're sealing a leak in your RV, repairing cracks in your driveway, or filling gaps in your walls, Flex Paste bonds effectively and provides a strong, waterproof seal. -
Question:
Is Flex Paste paintable after curing?
Answer: Yes, Flex Paste is paintable once it has fully cured. This feature allows you to blend the repair seamlessly with surrounding surfaces. To achieve the best results, you should wait until the paste has dried completely before applying paint. This can be particularly useful in home renovation projects or when trying to maintain aesthetic consistency in your decor. -
Question:
How does Flex Paste block out water and air?
Answer: Flex Paste forms a thick, rubberized coating that adheres to various surfaces, effectively sealing gaps and cracks. This creates a barrier that blocks out water and air, preventing leaks and drafts. It’s particularly useful in areas prone to moisture, such as bathrooms or basements, where maintaining a dry environment is crucial. -
Question:
Can I use Flex Paste for outdoor repairs?
Answer: Absolutely! Flex Paste is UV resistant, making it suitable for outdoor applications. It stands up to harsh weather conditions, including rain and sunlight, ensuring that your repairs hold strong over time. This makes it an excellent choice for sealing roofs, gutters, and outdoor furniture repairs. -
Question:
How do I apply Flex Paste?
Answer: Applying Flex Paste is simple. First, ensure the surface is clean and dry. Use a putty knife or your finger to apply the paste directly into the gap or crack. Smooth it out for an even finish. It can be applied in layers if more depth is needed. This method is effective for both minor and significant repairs, providing a strong shield against the elements. -
Question:
What is the drying time for Flex Paste?
Answer: Flex Paste typically dries to the touch within a few hours, but full curing may take longer depending on thickness and environmental conditions. It is recommended to wait for a full cure for optimal strength before exposing it to heavy moisture or stress. This ensures that your repairs are robust and long-lasting. -
Question:
Is Flex Paste safe to use indoors?
Answer: Yes, Flex Paste can be used indoors. It has low VOC (volatile organic compounds) levels, which means it releases fewer harmful fumes during application. This makes it safer for use in enclosed spaces like homes or garages, especially during DIY projects where ventilation may be limited. -
Question:
Can Flex Paste be used for HVAC or plumbing repairs?
Answer: Flex Paste can be used for minor HVAC and plumbing repairs by sealing small leaks and gaps. However, for larger or more critical repairs, it's best to consult a professional. This product works best in situations where you need a durable seal, like on pipe fittings or ductwork, as it can withstand temperature fluctuations. -
Question:
How should I store Flex Paste?
Answer: To ensure the longevity and effectiveness of Flex Paste, store it in a cool, dry place. Keep the lid tightly sealed to prevent it from drying out or becoming contaminated. Proper storage is crucial, especially if you plan to use the paste over time for various projects. -
Question:
Where can I buy Flex Paste in Bhutan?
Answer: You can buy Flex Paste, 3 lb Can, Black, from Ubuy in Bhutan. Ubuy offers a variety of products and ensures that you can find exactly what you need for all your repair projects. Check their website for availability and specifics.
Flex Paste Sealers Editorial Review
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, White, Half-Quart is an effective solution for sealing various materials, including aluminum, ceramic, and wood, ensuring that air and water don’t escape. Users particularly appreciate its easy application process and the good amount of workable time it provides, making it great for projects like patching leaks on roofs and repairing planters. However, several reviewers have been frustrated with the product arriving dried up due to inadequate packaging, emphasizing the need for better sealing to maintain usability over time.
Customer Reviews & Ratings
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Pros
- Waterproof and paintable for versatile use
- Effective on multiple materials and surfaces
- Easy to apply with smooth consistency
- Good workable time before setting
- Excellent for outdoor repairs and projects
Cons
- Packaging needs improvement to prevent drying out
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
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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.
BTN 4842
Order now and get it around Thursday, September 24
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:
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Features & Benefits
- Stop leaks fast
- Clings to a wide variety of surfaces
- UV and mildew resistant
- Perfect for indoor and outdoor projects and repairs.
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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.