Skip to Content

Log in / Sign up

Q&A for How to Seal a Plastic Gas Tank

Return to Full Article

Coming soon

Search

Add New Question

Question

Is Flex Seal gasoline resistant?

wikiHow Staff Editor
Staff Answer
This answer was written by one of our trained team of researchers who validated it for accuracy and comprehensiveness.

wikiHow Staff Editor

Staff Answer

According to the manufacturer’s website, Flex Seal is not a good choice for sealing gasoline tanks. It’s not made to withstand a lot of heat or pressure, and it’s not recommended for use with flammable liquids, such as gasoline.

Thanks! We're glad this was helpful.
Thank you for your feedback.
If wikiHow has helped you, please consider a small contribution to support us in helping more readers like you. We’re committed to providing the world with free how-to resources, and even $1 helps us in our mission. Support wikiHow
Yes No

Not Helpful 0 Helpful 4
Question

How do you fix a plastic gas tank on a lawnmower?

wikiHow Staff Editor
Staff Answer
This answer was written by one of our trained team of researchers who validated it for accuracy and comprehensiveness.

wikiHow Staff Editor

Staff Answer

A fiberglass repair patch will work well for this job. Drain the tank and let it dry completely first, and don’t forget to sand the area around the leak or hole so that the adhesive compound can adhere properly.

Thanks! We're glad this was helpful.
Thank you for your feedback.
If wikiHow has helped you, please consider a small contribution to support us in helping more readers like you. We’re committed to providing the world with free how-to resources, and even $1 helps us in our mission. Support wikiHow
Yes No

Not Helpful 8 Helpful 17
Question

Will Teflon tape seal in gasoline?

wikiHow Staff Editor
Staff Answer
This answer was written by one of our trained team of researchers who validated it for accuracy and comprehensiveness.

wikiHow Staff Editor

Staff Answer

No, the gasoline will eventually break down the tape. If you want a quick and easy fix, a fiberglass patch is a better option.

Thanks! We're glad this was helpful.
Thank you for your feedback.
If wikiHow has helped you, please consider a small contribution to support us in helping more readers like you. We’re committed to providing the world with free how-to resources, and even $1 helps us in our mission. Support wikiHow
Yes No

Not Helpful 2 Helpful 2
Question

Can I use JB Weld on a gas tank?

wikiHow Staff Editor
Staff Answer
This answer was written by one of our trained team of researchers who validated it for accuracy and comprehensiveness.

wikiHow Staff Editor

Staff Answer

J-B Weld can be used for a temporary wet repair to a gas tank. Follow the manufacturer’s instructions and be sure to treat this as a temporary fix before replacing your gas tank, as it’s only a short-term patch-up solution.

Thanks! We're glad this was helpful.
Thank you for your feedback.
If wikiHow has helped you, please consider a small contribution to support us in helping more readers like you. We’re committed to providing the world with free how-to resources, and even $1 helps us in our mission. Support wikiHow
Yes No

Not Helpful 3 Helpful 2
Question

Is J-B plastic weld gas resistant?

wikiHow Staff Editor
Staff Answer
This answer was written by one of our trained team of researchers who validated it for accuracy and comprehensiveness.

wikiHow Staff Editor

Staff Answer

According to the manufacturer’s website, "When fully cured, J-B Weld is completely resistant to water, gasoline, and about every other petroleum product or automotive chemical."

Thanks! We're glad this was helpful.
Thank you for your feedback.
If wikiHow has helped you, please consider a small contribution to support us in helping more readers like you. We’re committed to providing the world with free how-to resources, and even $1 helps us in our mission. Support wikiHow
Yes No

Not Helpful 1 Helpful 9
Question

What type of plastic is used in fuel tanks?

wikiHow Staff Editor
Staff Answer
This answer was written by one of our trained team of researchers who validated it for accuracy and comprehensiveness.

wikiHow Staff Editor

Staff Answer

The main type of plastic used in fuel tanks is high-density polyethylene (HDPE), and this shaped by a process known as "blow molding" (Wikipedia). Other plastics that may be present in fuel tanks include: Polypropylene (PP), regrind plastic (recycled polyethylene) and possibly plastic adhesives.

Thanks! We're glad this was helpful.
Thank you for your feedback.
If wikiHow has helped you, please consider a small contribution to support us in helping more readers like you. We’re committed to providing the world with free how-to resources, and even $1 helps us in our mission. Support wikiHow
Yes No

Not Helpful 1 Helpful 3
Question

How do you fix a leak in a gas tank?

wikiHow Staff Editor
Staff Answer
This answer was written by one of our trained team of researchers who validated it for accuracy and comprehensiveness.

wikiHow Staff Editor

Staff Answer

It is recommended that you follow the steps above, which explain how to seal small holes and tears. If the hole or tear is large, it is likely beyond repair and will need to be replaced.

Thanks! We're glad this was helpful.
Thank you for your feedback.
If wikiHow has helped you, please consider a small contribution to support us in helping more readers like you. We’re committed to providing the world with free how-to resources, and even $1 helps us in our mission. Support wikiHow
Yes No

Not Helpful 3 Helpful 3
Question

Can a seam in a lawnmower's plastic fuel tank be repaired using a hot glue gun?

Community Answer

Probably not. The best way to repair is a plastic welder with a plastic rod that matches the plastic of the tank.

Thanks! We're glad this was helpful.
Thank you for your feedback.
If wikiHow has helped you, please consider a small contribution to support us in helping more readers like you. We’re committed to providing the world with free how-to resources, and even $1 helps us in our mission. Support wikiHow
Yes No

Not Helpful 2 Helpful 8
Question

Can I seal a plastic gas tank with fiber glass?

Community Answer

Yes. Use a product called Tiger Paste, which is fiberglass and resin all in one. The tank MUST be clean of all dirt, grease and oil. Seal the entire tank except for filler and any vent pipes, or pick up tube openings.

Thanks! We're glad this was helpful.
Thank you for your feedback.
If wikiHow has helped you, please consider a small contribution to support us in helping more readers like you. We’re committed to providing the world with free how-to resources, and even $1 helps us in our mission. Support wikiHow
Yes No

Not Helpful 14 Helpful 26
Question

What grit of sandpaper should I use to sand a plastic fuel tank?

Community Answer

You should use 80 or 100 grit sandpaper. 60 grit will work, as well. The idea is to scuff the area, so that the epoxy will have a stronger bond.

Thanks! We're glad this was helpful.
Thank you for your feedback.
If wikiHow has helped you, please consider a small contribution to support us in helping more readers like you. We’re committed to providing the world with free how-to resources, and even $1 helps us in our mission. Support wikiHow
Yes No

Not Helpful 5 Helpful 9
Question

Will Flex Shot seal a crack in a plastic gas tank?

Community Answer

It is doubtful because the gasoline will likely dissolve the adhesive in short time, as well as the rubber portion of that stuff. Epoxy or plastic welding are the best options.

Thanks! We're glad this was helpful.
Thank you for your feedback.
If wikiHow has helped you, please consider a small contribution to support us in helping more readers like you. We’re committed to providing the world with free how-to resources, and even $1 helps us in our mission. Support wikiHow
Yes No

Not Helpful 0 Helpful 3
Question

Where can I purchase a plastic welder?

Community Answer

Plastic welders are quite expensive. Unless you're going to start a tank repair business, it may be smarter to rent one. If you really want to purchase one, there are many to choose from online.

Thanks! We're glad this was helpful.
Thank you for your feedback.
If wikiHow has helped you, please consider a small contribution to support us in helping more readers like you. We’re committed to providing the world with free how-to resources, and even $1 helps us in our mission. Support wikiHow
Yes No

Not Helpful 3 Helpful 0

Ask a Question

200 characters left

Include your email address to get a message when this question is answered.

Return to Full Article

You Might Also Like

-

-

178

.mwimg a.image{display:none}#header_logo{display:none}#cse-search-box{display:none}#cse-search-box-noscript{display:block !important}#cse-search-box-noscript .cse_q{color:#FFF;background-color:#B3CE9C}.wh_search .cse_q{width:88%}#mw-mf-main-menu-button{display:none;visibility:hidden}.header .search{display:none}#search_footer .cse_sa{background-image:url(/extensions/wikihow/mobile/images/white_mag.png);background-size:22px}.related_box{display:block;background:#EEE;border:5px solid #FFF;vertical-align:bottom;width:127px;background-size:180px;float:left;height:120px;position:relative}.related_box p{line-height:15px !important;font-size:13px;background-color:rgba(67,95,44,.4);color:#FFF;font-weight:bold;padding:8px;margin:0 !important;position:absolute;bottom:0}#noscript_header_logo{display:table-cell;vertical-align:middle;background-position:50% 77%;background-repeat:no-repeat;background-image:url(/extensions/wikihow/mobile/images/wikihow_logo_230.png);background-size:105px;width:auto;height:51px;padding:0 14px}.articleinfo{display:none}#iorg_free_data{z-index:50;width:100%;position:fixed}#ara_recommendations{display:none}

Design a Mobile Website

View Site in Mobile | Classic

Share by: