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.

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Fully operational. Shipping worldwide, on schedule.Duty & taxes paid at delivery

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Flex Paste Rubberized Waterproof Sealant Paste, Black, Quart, 1-Pack

Flex Paste Rubberized Waterproof Sealant Paste, Black, Quart, 1-Pack

Product ID: 527684813

Details

Brand
Flex Paste
Item Weight
3 Pounds
Item dimensions L x W x H
12.7 x 10.8 x
Material
Rubber
Style
Compact

🎨Fully paintable & UV resistant

💧Works & dries underwater

🛠️Super thick rubber paste fills large gaps

Description

💪 Seal it. Protect it. Flex your fix like a boss.

CUSTOM FINISH - Once cured, paint over it to match any surface and protect against rust, corrosion, and UV damage.
SEAL LIKE A PRO - Penetrates deep to create a flexible, watertight rubber barrier that blocks air, water, and moisture.
GAP FILLING POWER - Super thick paste instantly fills large cracks, holes, and gaps for heavy-duty repairs.
VERSATILE RELIABLE - Perfect for indoor/outdoor projects—roof, RV, marine, concrete, and more, made proudly in the USA.
UNDERWATER APPLICATION - Apply confidently underwater—dries to a durable seal even in wet conditions.

Flex Paste Rubberized Waterproof Sealant Paste is a super thick, black rubber paste designed to fill large cracks and holes with a flexible, watertight seal. It works underwater, dries to a paintable and UV-resistant finish, and is ideal for a wide range of indoor and outdoor repair projects including roofs, RVs, concrete, and marine applications. Packaged in a freshness-locking container to maximize shelf life, this USA-made sealant combines durability with versatility for professional-grade results.

Specifications

ASIN	B084TDDCWW
Best Sellers Rank	#165,037 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #100 in Adhesive Caulk
Brand Name	Flex Paste
Colour	Black
Compatible Material	Concrete
Customer Reviews	4.0 4.0 out of 5 stars (1,871)
Included Components	Household Item
Item Dimensions	12.7 x 10.8 x 10.8 Centimeters
Item Form	Paste
Item Highlight	Super thick rubber paste, fills gaps, cracks, holes, works underwater, paintable, UV resistant, walls, drywall, roof, RV
Item Type Name	Flex Paste 3 lb Tub (Black)
Item Weight	3 Pounds
Manufacturer	Swift Response, LLC
Manufacturer Part Number	PFSBLKR32
Material Type	Rubber
Model	FLEX SEAL - PFSBLKR32 - BLACK
Number of Items	1
Style Name	Compact
Surface Recommendation	Tub
UPC	850010226811
Unit Count	1419.53 Milliliters
Water Resistance Level	Waterproof

Common Questions

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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.

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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

Vikram D.

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

2 weeks ago

Fatima A.

Best international shipping I've ever tried. Worth every penny!

3 days ago

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