Can this be used on flexible surfaces?

Depends on how flexible. It has to be able to adhere to the surface. It cures the same as rubber in a tire. There is some give.

Hello there. That's an excellent question. Flex Paste can be applied to dry or wet surfaces and even underwater. It does not dissolve, creating a watertight seal. Thank you very much for reaching out to us with your question. Please write to us anytime. We're always happy to help. Flex On!

Flex seal pasta can it be used on curved surfaces?

Yes it can be used on any curved and even upside down surface but if ordering on-line, if you open the can and the edges are turning hard return it ASAP because chances is it's hard on bottom as-well and you don't get your money worth

Can I use in a in ground swimming pool to repair a crack

Yes, it can be applied underwater. It won’t dissolve or wash away. It even dries underwater! Flex Paste is easy to use. With a putty knife, trowel, spatula, roller, or stiff brush remove a smooth even layer of material from the top of the tub. Scooping deeply into the tub may cause air pockets which can dry FLEX PASTE. Apply a generous amount using a smooth sweeping motion.

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, 1 lb Jar, Black, Waterproof Paintable Putty, Spackle Sealant, Fill Gaps Cracks Holes - Block Out Water and Air - UV Resistant - Walls, Drywall, EPDM, Concrete, Roof, RV Repairs

Product ID: 267848373

Details

Brand
Flex Paste
Item dimensions L x W x H
10.8 x 10.8 x
Item weight
454 g
Material
Rubber
Style
1 lb Black

🌊Dries underwater, works in wet conditions

💪Super thick, fills large gaps instantly

🛡️Waterproof & UV resistant seal

R2398

Duties & taxes included

In stock

Sold byAmazon South AfricaDelivered 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 South Africa.

Secure transaction

Description

🖌️ Flex Paste: Seal, Protect, and Paint Your World Flawlessly!

SEAL LIKE A PRO - Creates a flexible, rubberized barrier that blocks air, water, and moisture for lasting protection.
STAY FRESH TECH - Innovative airtight container locks in freshness, extending the product’s sealing power with zero waste.
DIY GAME CHANGER - Applies underwater and clings to any surface, making it ideal for quick fixes, crafts, and professional projects alike.
PAINT IT YOUR WAY - Fully paintable once cured, blending seamlessly with any surface while preventing rust and UV damage.
VERSATILE APPLICATION - Perfect for indoor/outdoor use on walls, roofs, RVs, concrete, and more—your all-in-one repair solution.

Flex Paste is a premium 1 lb black waterproof putty that seals gaps, cracks, and holes with a durable, flexible rubberized barrier. It features a stay-fresh container to maintain potency, works underwater, and is fully paintable and UV resistant. Ideal for a wide range of indoor and outdoor repairs on materials like concrete, drywall, EPDM, and more, making it the ultimate sealant for professionals and DIY enthusiasts.

Specifications

ASIN	B084TDS8S5
Best Sellers Rank	#65,296 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #75 in Putty Knives
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	3.8 3.8 out of 5 stars (3,163)
Included Components	Household Item
Item Dimensions	10.8 x 10.8 x 6.4 centimeters
Item Form	Paste
Item Type Name	Flex Paste 1 lb Jar (Black)
Item Weight	454 g
Manufacturer	Swift Response, LLC
Material Type	Rubber
Model	FLEX SEAL - PFSBLKR16 - BLACK
Number of Items	1
Number of Packs	1
Part Number	PFSBLKR16
Style Name	1 lb Black
Supported Standards	ASTM C-920
Surface Recommendation	Windows,Doors
UPC	850010226804
Unit Count	1 Count
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

Khalid Z.

Great experience from order to delivery. Highly recommended!

1 week ago

Abdullah B.

Great price for an authentic product. Fast international shipping too!

3 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.

R2398

Duties & taxes included

In stock

Sold byAmazon South AfricaDelivered 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 South Africa.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Vikram D.

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

2 weeks ago

Suresh K.

Very impressed with the quality and fast delivery. Will shop here again.

4 days ago

View all Trustpilot reviews