Can you use this Flex seal too caulk around your window frames? (more like a insulation)?, or stop a small draft creeping thru your window pane?

I'm sure you can. I have a waterwheel and trough. I sealed the trough, as it was leaking in several places. Even though water runs rapidly down the trough, I've had no leaking now for 2 years. I also used it to seal a leak on my ATV tir rim. The rim had a slight curve and wouldn't hold air. I sealed the sot that was leaking and it worked perfectly.

I have a leak in my car trunk, can this be used?

It really depends on why there is a leak, but probably not. If it's the weather stripping around the trunk (that rubber tubing stuff), I doubt that this stuff will replace or repair that. That's the most likely reason you have a leak. The seal needs replacing.

Can it be used on concrete?

Yes you can use Flex Seal on concrete.

I would like to use this to refinish and seal up a mobile home bathtub. Does it clean easily? Will it hold up to the constant use of a bathtub?

It will definitely seal and refinish the tub. I’m not sure about easy clean up as I only used it on a boat but it should clean up nicely as it seems to be self leveling spray and is very smooth when completely cured

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Flex Seal Spray Rubber Sealant Coating, Waterproof, Clear, 14 oz, 2-Pack

Flex Seal Spray Rubber Sealant Coating, Waterproof, Clear, 14 oz, 2-Pack

Product ID: 14235725

Details

Brand
Flex Seal
Item Weight
14 ounces
Item dimensions L x W x H
9.5 x 2.5 x
Material
Rubber
Style

🎨Paintable & clear finish

💧Waterproof & seals leaks fast

🛠️Flexible rubberized coating

NZ$107

Duties & taxes included

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Sold byAmazon New ZealandDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

💧 Seal the deal with Flex Seal — leak-proof your life in style!

INVISIBLE ARMOR - Dries clear and paintable, blending seamlessly with any surface or project.
VERSATILE FIXER - Perfect for gutters, roofs, RVs, wood, metal, and even creative arts & crafts.
SEAL IT FORGET IT - Stops leaks instantly with a watertight, flexible barrier that lasts for years.
WEATHERPROOF WARRIOR - Won't sag in summer heat or crack in winter cold—durability you can trust all year round.
RUST CORROSION DEFENDER - Protects surfaces from moisture and corrosion, even on wet or dry materials.

Flex Seal Spray Rubber Sealant Coating is a clear, waterproof, flexible spray that quickly seals leaks and protects surfaces from water, air, and corrosion. This 14 oz, 2-pack formula dries to a durable, paintable rubberized coating that stays pliable through extreme weather, making it ideal for home repairs, outdoor gear, and creative projects.

Specifications

ASIN	B00L3MDI0I
Best Sellers Rank	#140 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #1 in Hardware Sealers
Brand Name	Flex Seal
Color	Clear
Compatible Material	Rubber
Customer Reviews	4.4 4.4 out of 5 stars (39,770)
Global Trade Identification Number	00810129871340
Included Components	Flex Seal Spray Rubber Sealant Coating, 14-oz, Clear (2 Pack)
Item Dimensions	9.5 x 2.5 x 2.5 inches
Item Form	Spray
Item Highlight	Stops leaks fast, seals out water, air, moisture, prevents rust, paintable, flexible, gutters, roof repair, RV, wood, metal
Item Type Name	Flex Seal Spray Rubber Sealant Coating, 14-oz, Clear (2 Pack)
Item Weight	14 ounces
Manufacturer	Swift Response, LLC
Material Type	Rubber
Model	FSCL20
Number of Items	2
Part Number	FSCL20
Style Name	FSCLRR20-A-2PK
Surface Recommendation	Roof,Windows,Wood
UPC	810129871340
Unit Count	28 Fluid Ounces
Water Resistance Level	Waterproof

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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.

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TrustScore 4.5 | 7,300+ reviews

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Excellent communication throughout the order process. Product is perfect.

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NZ$107

Duties & taxes included

In stock

Sold byAmazon New ZealandDelivered 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 New Zealand.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Imran F.

Very reliable shop with genuine products. Will definitely buy again!

2 weeks ago

Neha S.

Excellent communication throughout the order process. Product is perfect.

2 weeks ago

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