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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59214 High Temperature Thread Sealant, 6 ml Tube, Pack of 1

Product ID: 255417982

Details

Brand
Permatex
Item dimensions L x W x H
18 x 97 x 165
Item weight
0.04 Pounds
Material
Silicone
Style
6 ml

⏳Allows 4-hour repositioning window

🔥Withstands up to 400°F high heat

🔩Locks & seals threaded fittings securely

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Description

🔧 Seal it, lock it, forget it — the high-temp thread hero your toolkit deserves!

LEAK PROOF LOCKDOWN - Stops leaks, vibration loosening, and moisture intrusion for ultimate reliability.
VERSATILE USE CASES - Perfect for head bolts, sensors, fuel fittings, brake and power steering lines—engineered for pros.
HEAT RESISTANT PERFORMANCE - Keeps your engine components sealed from -65°F to 400°F without breaking a sweat.
FLEXIBLE APPLICATION WINDOW - Reposition parts up to 4 hours after applying—no rush, no stress.
SMOOTH ASSEMBLY DISASSEMBLY - Lubricates threads for effortless installation and future maintenance.

Permatex 59214 High Temperature Thread Sealant is a premium 6 ml tube formula designed to lock and seal threaded fittings against leaks, vibration loosening, and harsh fluids. It operates reliably in extreme temperatures from -65°F to 400°F, lubricates threads for easy assembly and disassembly, and allows repositioning within 4 hours. Ideal for automotive and industrial applications including head bolts, sensors, fuel and brake lines.

Specifications

ASIN	B0002UEOP0
Best Sellers Rank	#18,058 in Automotive ( See Top 100 in Automotive ) #85 in Automotive Fillers, Adhesives & Sealants
Brand	Permatex
Customer Reviews	4.7 4.7 out of 5 stars (3,610)
Date First Available	14 August 2012
Exterior	Painted
Item Weight	18.1 g
Item model number	59214
Manufacturer	Permatex
Manufacturer Part Number	59214
Model	Permatex 59214
OEM Part Number	MB-CL1
Product Dimensions	1.75 x 9.68 x 16.51 cm; 18.14 g

Reviews

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

M**N

expired product

expired product, please send me a new one.

6.01.2024

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

G**D

Quality item

Does exactly what we needed, recommended

18.05.2026

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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€ 20.96

Duties & taxes included

In stock

Sold byAmazon SlovakiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Slovakia.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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