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🔥 Seal it tight, drive with confidence! 🔧
Permatex 59214 High Temperature Thread Sealant is a premium 6 ml formula designed to lock and seal threaded fittings against leaks, vibration, and harsh fluids. It operates reliably from -65°F to 400°F, lubricates threads for easy assembly, and allows repositioning within 4 hours. Trusted by automotive pros for differential plugs, fuel lines, and brake fittings, it delivers durable, leak-proof performance in demanding environments.


| Customer Reviews | 4.7 out of 5 stars 3,741 Reviews |
S**.
Excellent Sealant for Automotive Use!
used it to seal the differential plugs on my Ram 1500. It worked perfectly! The application was smooth and easy, and it provided a strong, leak-proof seal that gives me peace of mind. I really appreciate that it’s designed for high-temperature environments, which is essential for automotive applications. After driving for a while, I’ve had zero leaks and everything is holding up great. The tube size is convenient and has plenty of product for multiple uses. If you need a reliable, high-performance thread sealant for your vehicle, this is an excellent choice. Highly recommend for anyone doing differential or drivetrain work!
A**H
Reliable tool for garage projects
Overall, this has held up nicely during my garage repairs, and I’m happy with how effectively it works. It’s a helpful item to have on hand for various tasks around the house or in the garage.
H**Ć
Works as intended!
Works exactly as intended and is really easy to use. It applies smoothly and spreads evenly, making it simple to get a clean seal without any mess. It holds up well under high temperatures and does a great job preventing leaks and loosening, which is exactly what you want for this type of product. Overall, dependable and straightforward. Solid choice if you need a reliable thread sealant.
K**O
Useful sealant for high-temperature jobs
I found this Permatex thread sealant really helpful when working on engine parts. it’s small but goes a long way and keeps leaks tight under heat. I’ve used it during repairs in my garage, and it’s stayed durable. works well and I’m glad I chose it.
W**R
Great product but doesn’t come with a top to seal
Great product. Dries naturally and quickly to form fit threads. Unfortunately it is a one time use unless you use some other type of glue to seal it after using because it doesn’t come with a top.
H**R
Useful thread sealant for_engine repairs
Operating on my engine, I applied this Permatex sealant to ensure those fittings stayed leak-free even when things heat up. It’s a small tube, but I’ve used just a little each time and it lasts. The durability during my garage repairs has been good, and I’m pleased with how well it performs. Definitely a handy product to keep around.
S**L
Works great
Works as advertised. Perfect for fasteners that need to be retorqued after a period of time.
I**N
If you need it, you need it!
Permatex always makes solid products, and this high-temperature thread sealant is no exception. Applies easily, spreads well, and seals exactly as it should. It gives a clean, secure seal and holds up well under heat, which is critical for the types of applications this is used for. I like that it doesn’t make a mess and sets up properly without any issues. Once applied, you can trust it to do its job without worrying about leaks. If you’re working on anything that requires a reliable thread seal under higher temps, this is a great choice. Highly recommend 👍
J**O
Si pega muy bien
Que es muy buen producto
G**G
Amazon prime is great for a good deal
High temp sealing paste is what it says, the best part with this product is price on Amazon, half price compared to Ford main dealer. All good
H**R
Not drying
I have applied this seal on thread bolt and left it for almost 80 hours, unfortunately still not dry
F**R
Good product
Works as expected. No leaks after a short setting and curing period. Used it to seal an oil pressure sensor. Heat resistant
H**A
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