How hard is to unscrew after this has been set for awhile?

Comes apart with minimal force, it is a sealant not a thread locker. It works especially well on sealing thread that are not tapered pipe threads. I use this on my harley fluid drain plugs

Does this product solidify after 72 hrs as cited in the tds? after being applied for 52 hrs it remains a soft tacky paste.

Hello. I use this product quite often. It holds very well, seals very well. I just put some on my differential fill plug and seals it great. To answer your question, this product, when first put on threaded hardware will be wet and soft and be able to seal low pressure and intermediate pressure. Parts can be readjusted, torqued, etcetera with in 24 hours of application. 72 hours just means it is fully cured and can withstand higher pressures. But, once applied, it holds very well within hours. Definitely within 24 hours. It does not solidify, it stays wet and soft. It's good stuff. Hope this helped. BJ

I was told i could use this on an oil pressure sending unit and seen on websites it could be used. so someone just told me I shouldn't. So can i?

Yes, it works great. I use it on oil and brake system components exposed to high pressures and temperatures. No leaks, ever. Make sure it is applied to clean Dry threads. Use a solvent to clean threads, let dry, then apply the permatex. Be careful not to cross thread. Don't overtighten!! Cheers

Will this work on differential bolts that thread through into the case and are exposed to differential fluid?

Hello Michal. Yes this thread sealant does work on sealing differential fluid. I have used and know for sure it works on sealing the differential fill plug. If your referring to the cover bolts, you need a gasket or gasket maker to seal the cover. I'm not sure what bolts your referring to, but yes this sealant will seal differential fluid. Hope this helped.

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Permatex 59214 High Temperature Thread Sealant, 6 ml Tube

Permatex 59214 High Temperature Thread Sealant, 6 ml Tube

Product ID: 94260558

Details

Material
Polymer-based
Brand
Permatex
Style
High Thread
Item dimensions L x W x H
18 x 97 x 165
Water Resistance Level
Waterproof

💧Waterproof & leak-resistant

🔥Withstands up to 400°F

🔩Locks & seals threaded fittings

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€ 20.51

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Description

🔧 Seal it. Lock it. Own the heat.

EFFORTLESS ASSEMBLY - Lubricates threads for smooth installation and easy disassembly, saving you time and hassle.
PRECISION THREAD LOCK - Secures fittings against vibration and loosening, eliminating costly maintenance downtime.
ULTIMATE HEAT DEFENSE - Performs flawlessly from -65°F to 400°F, ensuring durability under extreme conditions.
FLEXIBLE REPOSITIONING - Allows parts to be adjusted up to 4 hours post-application—perfect for precision projects.
VERSATILE COMPATIBILITY - Works seamlessly on metals and plastics, ideal for automotive, hydraulic, and industrial uses.

Permatex 59214 High Temperature Thread Sealant is a polymer-based, waterproof formula designed to lock and seal threaded fittings against leakage, vibration, and harsh fluids. Rated for extreme temperatures from -65°F to 400°F, it lubricates threads for easy assembly and allows repositioning within 4 hours, making it the go-to solution for professionals demanding reliability and precision in automotive and industrial applications.

Specifications

ASIN	B0002UEOP0
Best Sellers Rank	#138,161 in Car & Motorbike ( See Top 100 in Car & Motorbike ) #132 in Fillers, Adhesives & Sealants
Brand	Permatex
Brand Name	Permatex
Colour	White
Compatible Material	Metals (E.g., Aluminum, Steel, Brass, Copper) and Various Types of Plastics Or Composite Materials
Country of Publication	USA
Customer Reviews	4.7 out of 5 stars 3,461 Reviews
EU Spare Part Availability Duration	4 Hours
Global Trade Identification Number	00686226592149
Item Dimensions	18 x 97 x 165 Millimeters
Item Form	Strip
Item Weight	18 g
Item dimensions L x W x H	18 x 97 x 165 Millimeters
Manufacturer	Permatex
Material	Polymer-based
Material Type	Polymer-based
Style	High Temperature Thread Sealant
Style Name	High Temperature Thread Sealant
Surface Recommendation	Metal, Plastic
UPC	686226592149
Unit Count	6.0 Milliliters
Water Resistance Level	Waterproof

Reviews

J**O

Si pega muy bien

Que es muy buen producto

20.01.2026

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!

3.02.2026

H**R

Not drying

I have applied this seal on thread bolt and left it for almost 80 hours, unfortunately still not dry

25.04.2024

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

9.11.2025

J**E

GM Sealer is NA, hope this works!

Have not used it before put permatex is a good brand

22.05.2026

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