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.

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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, Half-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, Half-Quart

Product ID: 368440065

Details

Brand
Flex Paste
Item Weight
1 Pounds
Item dimensions L x W x H
10.8 x 10.8 x
Material
Resin
Style
Compact

🌊Dries underwater

🖌️Fully paintable finish

🛡️Waterproof & UV resistant seal

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1222 DH

Duties & taxes included

In stock

Sold byAmazon MoroccoDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🛠️ Seal it, paint it, forget it — Flex Paste has your repairs covered!

CUSTOM FINISH - Once cured, paint it any color to match your style while preventing rust and UV damage.
UNDERWATER WONDER - Unique formula allows application and curing even underwater, no project too wet.
SEAL WITH CONFIDENCE - Creates a flexible, watertight rubberized barrier that blocks air, water, and moisture.
VERSATILE APPLICATION - Perfect for indoor/outdoor use on walls, roofs, RVs, concrete, and more—fills large gaps instantly.
STAY FRESH STAY READY - Innovative airtight container locks in freshness to prevent waste and extend sealing power.

Flex Paste is a premium waterproof, paintable putty designed to fill and seal gaps, cracks, and holes with a durable, flexible rubberized barrier. Its innovative airtight container preserves freshness, while its unique formula allows application and drying underwater. Ideal for a wide range of surfaces including drywall, concrete, roofs, and RVs, it offers UV resistance and a fully paintable finish for seamless repairs that last.

Specifications

ASIN	B084TDS8S5
Best Sellers Rank	#43,336 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #181 in Hardware Sealers
Brand	Flex Paste
Brand Name	Flex Paste
Colour	Black
Compatible Material	Diy
Country of Publication	USA
Customer Reviews	3.8 out of 5 stars 3,134 Reviews
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 dimensions L x W x H	10.8 x 10.8 x 6.4 Centimeters
Manufacturer	Swift Response, LLC
Manufacturer Part Number	PFSBLKR16
Material	Resin
Material Type	Resin
Model	FLEX SEAL - PFSBLKR16 - BLACK
Number of Items	1
Style	Compact
Style Name	Compact
Supported Standards	ASTM C-920
Surface Recommendation	Windows,Doors
UPC	850010226804
Unit Count	473.18 Milliliters
Water Resistance Level	Waterproof

Reviews

F**T

3.02.2026

G**S

4.11.2022

G**N

19.04.2026

関**雄

14.05.2025

L**K

18.04.2025

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1222 DH

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In stock

Sold byAmazon MoroccoDelivered 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 Morocco.

Secure transaction

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