Will yhis work on the bottom of a black water tank?

We used it to repair a separated seam on the drinking water tank for our camper. I don’t see why it wouldn’t work for your application. It’s held for a solid year, with several uses.

My coolant tank isn't cracked but has that white spiderweb look on the top near the cap, would this cover that section, to prevent it from cracking?

I think so. My tank had a small hole and it was very brittle in the area with cracks and it has done just fine for several months now. Much cheaper than paying $100 bucks for OEM tank.

Will this work on rubber?

Does it say it works on rubber? If it does then yes otherwise buyer beware. Please read shut the product uses and descriptions before asking this type of question.

Which is the best sealent for stopping leakage in sintex water tank

I ended up using gorilla glue, it was easy to apply and leaves a clear watertight seal. Remove the tank, drain it, wash it well with soap and water, dry it well, apply gorilla glue to the cracks and let dry, then water test before you reinstall the tank. Easy, clean and works great, has lasted over two years since I repaired.

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Permatex® Plastic Tank Repair Kit

Product ID: 4523503

Details

Brand
Permatex
Item Form
Liquid
Material
Plastic
Special Feature
Quick Curing
Specific Uses For Product
Fleet and

📸Step-by-step photo instructions

🔧Repairs cracks up to 4 inches

⏱️Cures in 30 minutes

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Rp563326

Duties & taxes included

In stock

Sold byAmazon IndonesiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🔧 Fix it fast, fix it right — your plastic tanks’ new best friend!

ALL IN ONE KIT - Includes everything needed for professional-quality repairs in minutes
PRECISION CRACK REPAIR - Seamlessly fixes cracks up to 4 inches and holes up to 0.375 inch
USER FRIENDLY GUIDANCE - Easy-to-follow instructions with photos ensure flawless application
RAPID CURE LASTING FIX - Hardens in 8-10 minutes, fully cures in 30 for minimal downtime
VERSATILE TANK COMPATIBILITY - Ideal for windshield washer, radiator overflow, coolant, water, and waste tanks

The Permatex® Plastic Tank Repair Kit is a comprehensive, easy-to-use solution designed to permanently repair cracks and holes in various plastic tanks. Featuring a quick-curing resin that hardens within 8-10 minutes and fully cures in 30, this kit includes step-by-step photo instructions for professional-quality results. Perfect for automotive and powersports applications, it reliably restores windshield washer reservoirs, radiator overflow tanks, coolant reservoirs, water tanks, and waste tanks—excluding plastic fuel tanks.

Specifications

ASIN	B0007TQWM4
Best Sellers Rank	#31,476 in Automotive ( See Top 100 in Automotive ) #8 in Powersports Gas Tanks
Brand	Permatex
Customer Reviews	4.1 4.1 out of 5 stars (478)
Date First Available	April 1, 2004
Exterior	Machined
Is Discontinued By Manufacturer	No
Item Weight	3.2 ounces
Item model number	9100
Manufacturer	Permatex
Manufacturer Part Number	PX09100
Model	09100
OEM Part Number	PX09100
Product Dimensions	2.6 x 4 x 8 inches
Special Features	Quick Curing Time, Easy to Use

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