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This item is eligible for return within 30 days of receipt
To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.
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Availability:
Only 8 left in stock, order soon!
Arrives
Monday, Nov 16
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At a glance
- Condition
- New
- Size
- 1 Count (Pack of 1)
- Dimensions
- 8 x 4 x 2 in
- Weight
- 3.2 oz
- Color
- white
- Material
- Plastic
- Style
- Compact
- In the box
- Permatex 80335 Muffler and Tailpipe Sealer3 oz.Plastic1 Count (Pack of 1)
- Warranty
- Warranty
Features 4
- Seals holes and leaks in mufflers, tailpipes and around joints
- Makes new installations more secure
- Waterproof, non-shrinking paste formula; shock resistant
- Temperature Range: up to 2000 F (1000 C)
Description
Permatex, 3 OZ Muffler & Tailpipe Sealer, Seals Holes & Leaks In Mufflers, Tailpipes & Around Joints. Easy to use. This product is highly durable. This product is manufactured in China.
Specs 23
| Material | Plastic |
|---|---|
| Brand | Permatex |
| Style | Compact |
| Item Weight | 3.2 ounces |
| Item dimensions L x W x H | 8 x 4 x 2 inches |
| Brand Name | Permatex |
| UPC | 686226803351 |
| Number of Packs | 1 |
| Unit Count | 1 Count |
| Global Trade Identification Number | 51 |
| Number of Items | 1 |
| Item Type Name | Permatex 80335 Muffler and Tailpipe Sealer, 3 oz., Plastic, 1 Count (Pack of 1) |
| Manufacturer | Permatex |
| Model | 80335 |
| Part Number | 80335 |
| Item Dimensions | 8 x 4 x 2 inches |
| Water Resistance Level | Waterproof |
| Item Form | Paste |
| Compatible Material | Plastic |
| Style Name | Compact |
| Color | white |
| Surface Recommendation | Miscellaneous |
| Material Type | Plastic |
No specs match.
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Monday, Nov 16
Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Top Amazon Reviews
Great stuff
Size: 1 Count (Pack of 1)
I rebuilt a portion of my exhaust and I had two flanges that didn't meet together like they should which left a small gap at the bottom. It wasn't bad enough to cause an audible exhaust leak, but condensation would leak from it. I figured some exhaust sealant would be a quick fix as opposed to resetting and re-welding the flanges back on. I was a bit dismayed when I received the product and realized it's not epoxy or solvent based, so I wasn't sure how effective it would be. I went ahead and tried it following the directions and it worked absolutely fantastic. It goes on fairly smoothly-- sort of comes out in globs, but it's easy enough to work into a nice bead. Evidently it's made from some sort of clay, but it worked like magic and hardens almost like a super smooth cement. I don't see it coming off anytime soon. Instructions go something like this: wet the area apply the product wait 30 minutes start engine and let run for 10 minutes. After that engine running period it's pretty well cured by that point, but I'm certain within a couple hours you're good to go. I would definitely buy it again.
...
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Reviewed in the United States on October 17, 2021 by Ashley Warren
Great stuff for repair
Size: 1 Count (Pack of 1)
Stuff worked great for my application. I had about an 1/4” x 1.5” crack/ rusted out area in my exhaust pipe. It in right next to where piece of heat shielding attached so it was easier to fill, but it would of worked if it was just a 1/4 crack anywhere. Applied as directed and worked great, amazing in fact. It’s only been a week, so idk how long it will hold. The pictures show prior, right after application and fully cured. It smooths out nice too. Still for a lot left in the tube. UPDATE MARCH2020: so after about a year this stuff fell off, but I think it was due to some other variables. Still, for a patch to hold a year is great! I just applied more today, the hole is still the same size too so It’s good it didn’t get worse. My muffler has a lot of surface rust, but this is the only hole and it still seems solid- so if I keep patching this every year, for 6$ and about 5 min of work, I can’t complain! Truthfully it lasted longer then I expected. Probably enough left in the tube for maybe one more application (3 total applications, but I put a lot on). It still get 5 stars!
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Reviewed in the United States on March 8, 2019 by Anthony V
Has a limited shelf life but works well
Size: 1 Count (Pack of 1)
The product itself is awesome. Seems anything I buy from Permatex does what it is supposed to do. For this particular "repair" I was a bit unsure as to which Permatex product to purchase. My motorcycle exhaust has a connection where the header pipe and tailpipe meet. An aftermarket "Jardine" exhaust and oddly quite a large gap at the connection whereas the bracket is supposed to crimp and does not do a very good job at sealing it. This may be how it was designed but for me an exhaust leak in your plan is not a good plan. Bottom line i wanted to seal this joint but wanted the option to take it apart to install new header gaskets down the line. Reaching out to Permatex they actually recommended a different product that was twice the cost of this with half the temp limit. I am happy I chose this as it sealed the joint and I was able to disconnect the pipes and install the gaskets. I am now looking to try a "lap joint" bracket as I would prefer a more permanent solution. I feel anything with the Permatex name is a good product but has limited shelf life and will eventually break down. The trouble is they make so many similar products it is hard to choose the correct one. In my opinion there is not one single best application for a particular project. Doing some research prior to buying is always recommended.
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Reviewed in the United States on July 10, 2024 by mog703
useability- price
Size: 1 Count (Pack of 1)
grate!
Reviewed in the United States on October 13, 2026 by edward e clowers
Love this stuff - filled in rust pin holes in our exhaust pipe - worked on first try - still working
Size: 1 Count (Pack of 1)
I had a few tiny rust pin holes in my middle exhaust pipe on our 04 Hyundai Santa Fe. Bought this to fill those in. Worked great. You have to put some water on the spot first. Then I just used a latex glove and applied to the pipe with my finger. Need to work it into the leaking part and then apply more until you have about 1/4 inch thick. Run the engine for about 30 min to dry the sealer. Thats it - this did not require a clamp or cover. Can't see or hear an more leaking exhaust. This area was just behind the catalytic converter - so the pipe gets pretty hot. I would use this again. I don't think this would be able to stand the temperature if used between the engine and catalytic converter. I have used the Permatex 80334 1000 Degree Plus repair kit before and it did not work. (basically the tape dried and then fell off). This item works much better! Would purchase this item again.
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Reviewed in the United States on December 18, 2013 by Business Owner
Sealant
Size: 1 Count (Pack of 1)
Works ok value for youre money
Reviewed in the United States on October 11, 2026 by High expectation’s
Better then expected
Size: 1 Count (Pack of 1)
Great product. Strong, dries quickly and made in USA. Perfect.
Reviewed in the United States on November 4, 2025 by MAF
Problem solved
Size: 1 Count (Pack of 1)
It was on time packing was intact very good quality and solving the problem it did but this if you need to great price you can't beat for the money
Reviewed in the United States on October 5, 2025 by Assclown