🔧 Seal it, fix it, forget it — the pro’s secret weapon!
Permatex 51813 Anaerobic Gasket Maker is a high-performance, red gasket sealant in a 50 ml tube designed for emergency and precision repairs. It fills gaps up to 0.015 inches, cures to a solvent-resistant, tear-proof seal, and allows easy disassembly even after long-term use. OEM specified and non-corrosive, it’s perfect for water pumps, transmission components, and thermostat housings.
| Manufacturer | Permatex |
| Brand | Permatex |
| Model | Permatex 51813 |
| Item Weight | 2.72 ounces |
| Product Dimensions | 1.5 x 3.81 x 8 inches |
| Item model number | 51813 |
| Is Discontinued By Manufacturer | No |
| Exterior | Painted |
| Manufacturer Part Number | 51813 |
| OEM Part Number | PMT51813 |
N**
Very good stuff, must have for any mechanic.
If you’re not familiar with this sealant it only hardens once everything is tightened up, it’s like a heavy grease when you apply it. I’ve had excellent results using it on split engine cases and as a replacement for a base gasket when you are trying to bump up the compression on something like a chainsaw or other small engine. What i use it for most is on paper type gaskets. A light coat on both sides of a new gasket and it’ll never leak. In a pinch if you pull something with a paper gasket and it don’t tear you can apply this to the exposed side of the gasket and re use it. I’ve done this quite a few times and never had a leak. It is better than using Silicone/RTV in a lot of applications. However I would not recommend it for any application that has a rubber or steel gasket.
G**F
Best product you can get for doing anything on an intake assembly.
It’s not like I didn’t know what I was getting with this, but if you are doing anything intake, carburettor or throttle body on a vehicle then you should be using this.
A**O
The correct anerobic sealer.
Great product.
C**F
Works great, seal flanged/mounted areas.
Before you buy, it’s anaerobic. Please look up meaning. The video is funny cuz the dude has no idea.It has to have no air. So under the piece needing sealed it works great. And extra that pops out in the “Air” will not dry. 😂This works great. I’ve used it forever.
W**.
Great stuff
Use it a lot. I seal most of the engines front cover and rear with this, including Detroit engines series 60 which usually call for the special “ Detroit anaerobic “ . Love this product quality and quantity, really a good buy
T**Z
I gave it a try!
Used for side engine cover. I just made a small hole to squeeze onto the cover face. Man, this stuff is very hard to squeeze out! Have to keep working at it. Good thing there is no time restraints to get parts bolted quickly. In fact, you need to wait 1-2 minutes before assembly of parts. I laid about a 1/8 bead. When I bolted the cover on, I had gasket maker squeezing out at surface faces all the way around. So should have a good seal.Used hardly any of the tube, so it should be good for a large project or many projects. Would use again.
J**E
The best
This stuff is great for splitting tractors I don’t use anything else
J**.
Perfect for transfer cases and motorcycle/atv cases!
So much better than RTV!
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