Could you do several layers or one very thick layer to create a rubberized coating on something?

Absolutely, just please remember that the thicker the final coating is, the longer the cure time will be. We highly advise creating the coating by adding layers to the surface rather than just one thick coat.

Any temperature requirement?

Flex Paste can be applied in a wide range of temperatures from 0°F – 150ۜ°F. Once applied and fully cured it can withstand a wider range of temperatures from -40°F – 200°F.

Can this be used to fix crack in small ref/frezer

Hi there. Thank you so much for reaching out. Flex Paste can withstand low temps like that in a freezer. Although some customers have found success with similar applications, it has not been tested for its safety when coming in contact with items used for food preparation, storing, or serving. Please contact us if you have any additional questions. We're always happy to help. Flex On!

can flex paste be painted ?

Yes. Must be fully cured before painting.

Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

Help Track order

Account Cart

Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

Help Track order

Account Cart

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, Quart

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, Quart

Product ID: 225321582

Details

Brand
Flex Paste
Item Weight
3 Pounds
Item dimensions L x W x H
5 x 4.25 x
Material
Rubber
Style
3 lb Black

🌊Dries underwater

🎨Fully paintable finish

🛡️Waterproof & airtight seal

Buy anything from 5,000+ international stores. One checkout price. No surprise fees. Join 2M+ shoppers on Desertcart.

€ 67.44

Duties & taxes included

In stock

Sold byAmazon IrelandDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Ireland.

Secure transaction

ProDesertcart PRO

Fast, free shipping, member pricing & priority support.

Join PRO →

Description

🛠️ Seal Smart, Stay Fresh, Look Flawless!

PAINT IT YOUR WAY - Once cured, seamlessly paint over to match any décor—no compromises on style or durability.
HEAVY DUTY GAP FILLER - Super thick formula clings instantly to fill large cracks, holes, and gaps with ease.
FRESHNESS LOCKED CONTAINER - Innovative airtight tub keeps your paste fresh and ready, eliminating waste and extending shelf life.
VERSATILE PRO GRADE REPAIR - Perfect for walls, roofs, RVs, concrete, and more—trusted by DIY pros and managers who demand reliability.
ULTIMATE WATERPROOF BARRIER - Creates a flexible, rubberized shield that blocks water, air, and moisture for lasting protection.

Flex Paste is a premium, waterproof, paintable rubberized putty designed to fill and seal gaps, cracks, and holes across multiple surfaces. Its unique formula works underwater, resists UV damage, and comes in a freshness-lock container to maximize usability. Ideal for professional-grade repairs on walls, roofs, RVs, and concrete, it offers a durable, flexible barrier that prevents water, air, and moisture intrusion while allowing a flawless paint finish.

Specifications

ASIN	B084TDDCWW
Best Sellers Rank	#9,582 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #38 in Hardware Sealers
Brand Name	Flex Paste
Color	Black
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
Customer Reviews	4.0 4.0 out of 5 stars (6,021)
Included Components	Household Item
Item Dimensions	5 x 4.25 x 4.25 inches
Item Form	Paste
Item Type Name	Flex Paste 3 lb Tub (Black)
Item Weight	3 Pounds
Manufacturer	Swift Response, LLC
Material Type	Rubber
Model	FLEX SEAL - PFSBLKR32 - BLACK
Number of Items	1
Part Number	PFSBLKR32
Style Name	3 lb Black
Surface Recommendation	Windows,Doors,Tub
UPC	850010226811
Unit Count	48.0 Ounce
Warranty Description	1 Year Limited
Water Resistance Level	Waterproof

Common Questions

Are the products genuine and authentic?+

Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

How long does delivery take and is it reliable?+

Delivery times vary by destination country, typically ranging from 3-9 business days. Each order is fully trackable through our system. We handle all customs clearance and use reliable courier partners for last-mile delivery. You'll receive regular updates about your order status via email and our app.

What is Desertcart? Is it safe to order from?+

Desertcart is an international e-commerce platform operating since 2014. We securely process thousands of orders globally each day. Every product goes through our quality verification process before delivery, and we provide end-to-end order tracking, 24/7 customer support, and a comprehensive returns policy to ensure a safe shopping experience.

How is product pricing calculated?+

Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Ayesha M.

The product exactly matches the description. Very satisfied with my purchase.

5 days ago

Vikram D.

The MOLLE sheath is of exceptional quality. Very happy with my purchase.

2 weeks ago

View all Trustpilot reviews

Shop Global, Save with Desertcart

Value for Money

Competitive prices on a vast range of products

Shop Globally

Serving millions of shoppers across more than 100 countries

Enhanced Protection

Trusted payment options loved by worldwide shoppers

Customer Assurance

Trusted payment options loved by worldwide shoppers.

Desertcart App

Shop on the go, anytime, anywhere.