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⏱️ Seal fast, seal strong—because downtime is so last decade!
Permatex 25228 The Right Stuff 90 Minute Black Gasket Maker is a professional-grade silicone sealant that cures in just 90 minutes, replacing traditional precut gaskets with a durable, blowout-resistant seal. Compatible with metal, plastic, and rubber surfaces, it’s ideal for automotive and heavy-duty applications like valve covers and oil pans. The package includes an additional nozzle for multiple uses, making it a top-rated choice (#1 in Gasket Sealers) among mechanics and fleet professionals.


| ASIN | B07R4C3KJB |
| Best Sellers Rank | #79 in Automotive ( See Top 100 in Automotive ) #1 in Gasket Sealers |
| Brand | Permatex |
| Brand Name | Permatex |
| Color | Black |
| Compatible Material | Metal, Plastic, Rubber |
| Customer Reviews | 4.8 out of 5 stars 1,568 Reviews |
| Global Trade Identification Number | 00686226252289 |
| Included Components | Gasket Maker |
| Item Dimensions | 1.5 x 3.81 x 8 inches |
| Item Form | Liquid |
| Item Type Name | Gasket Maker |
| Item Weight | 0.1 kg |
| Item dimensions L x W x H | 1.5 x 3.81 x 8 inches |
| Manufacturer | Permatex |
| Material | Plastic |
| Material Type | Plastic |
| Model | 25228 |
| Number of Items | 1 |
| Number of Packs | 1 |
| Part Number | 25228 |
| Style | The Right Stuff 90 Min |
| Style Name | The Right Stuff 90 Min |
| Surface Recommendation | Miscellaneous |
| UPC | 686226252289 |
| Unit Count | 1 Count |
| Warranty Description | No_warranty |
| Water Resistance Level | Water Resistant |
1**I
Great product!!!
This is the Right stuff worked great for my sbc intake manifold end seals and oil pan gasket ends. Great product great price. Now I have to get silicone saver caps to keep the tip clean from plugging up after use..
T**M
Great for sealing transmissions.
This stuff is great! I used it on my Automatic Transmission Pan, use as directed on the instructions, and it cured and sealed perfectly. Job was done very easily, not messy at all. Consistent and flexible yet very good with adhesion. Love this product and would highly recommend for anyone who has some time, but not 24hrs to get a job done.
T**Z
Good seal for now.
Got this instead of Hondabond. People are stating that you have 4 minutes from the time you start applying hondabond until you have the pan up and bolts hand tight. I know that's not gonna work. I used it for a oil pan, heck, it took me 3 minutes just to apply it to the seal surface. It worked well, I followed the direction explicitly so I don't have to redo. Installed, filled with oil the next day and test run the engine looking for leaks. None seen yet. I have enought for another project.
T**M
Great gasket/sealant
Use it whenever I can on automotive instead of gaskets tractors differentials intakes you name it never leaks
J**J
The GOAT of RTVs, worth the money...
Used to seal a plain old stamped steel lower oil pan to the aluminum upper oil pan. Followed directions, zero leaks, cures just as fast as directions state: finger tighten, then 60 minutes wait, then torque to spec, then 30 minutes wait, then pour oil in. About the only bad part (and it isn't their fault) is how annoying it is to squeeze it out with a continuous pressure because it's a tube, companies sell "tube dispensing pliers", I just don't do enough of these to justify buying one. Some may wonder just how well it adheres and how easy it is to remove after a fresh application. I had to remove the pan roughly four weeks after resealing with Right Stuff (reason for removal had nothing to do with Right Stuff), so I was able to test the adhesion as well. The old RTV that was on the pan for fourteen years was so weak and already seeping oil past it, that just inserting a putty knife by hand and twisting at one corner removed the entire pan. Right Stuff adhered so well that I had to insert the putty knife into three corners, by hammer, twist just to even start splitting, then do a lot of downward pulling. No damage (or bending) occurred to the pan and it does come off but the adhesion is extremely tight. With the pan bolts on I can see why this wouldn't leak oil and it's been months now with zero drops of oil. Getting the remnants off the lower and upper oil pan was mildly annoying since it was stuck on well, but nothing plastic razor blades couldn't fix. On the second time around re-sealing the pan, I used the same tube of Right Stuff, the pan is 14x9 inches so the tube had enough to do that pan about three times with a ~4mm bead, if you like to smear it rather than bead it, you can probably get more out of it if you smear it without waste. After four weeks the Right Stuff in the tube was just as pliable as when I first bought it, I've never had to re-seal back to back like this with a four week gap between, usually the gap between when I use a tube is months to years and it's dried up by that point, so just know it's going to last a while. Save the plastic nozzle when you're done with it, if you throw the nozzle away you're going to need to buy the nozzle four pack that Permatex sells if you need it again anyway. The nozzle may look like a lost cause because of the RTV in it, but just let it dry and cure, once it dries and cures, it becomes a plug that when pushed (with a pick, ballpoint pen, etc), comes out completely leaving no residue or mess in the nozzle, doesn't adhere to it at all. Also don't attempt to clean the RTV out of the nozzle while it's still wet, you're either going to need solvents which will damage the plastic, or you're just going to spread the RTV thin on the walls of the nozzle and when it dries you're going to have to scrape the inside up to flake it off. Keep it simple, leave the mass of RTV in there whole so that it all comes out together as one piece/plug.
L**N
Handy gasket tube for quick fixes
This saved my Monday morning. I run a small print shop and used it to seal a leaking air compressor so we could keep jobs moving. It sealed up nice and fast, no mess once you get the hang of it. Tube feels a bit small for the price though, and the cap is easy to misplace adn lose.
N**K
Worked well on Ford Focus transmission pan.
So far so good. I used it on a transmission pan and it seems to be leak free.
W**T
Worked on my wife's pathfinder valve cover and plan to use it for other things too!
Bought this to use on a valve cover gasket which required a few dabs of RTV also. was able to add this where I needed it, drop valve cover on and torque it down to spec. waited the recommended 90 minutes for everything to cure and we are back on the road. This can be used in a variety of different applications which is why I ultimately decided to get this. and the wait time is only 90 minutes compared to 24 hours for others. I'd recommend this product.
J**E
Bon produit
Bon produit
J**.
Bueno
Mandan lo que publican muy buen producto
S**U
Intake is home ;-)
EXACTLY what I needed......worked GREAT.
D**N
Qualité
Tres bon produit
Trustpilot
3 days ago
2 months ago