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Your cart is empty.Permatex Ultra Grey Rigid High-Torque RTV Silicone Gasket Maker is designed specially for high-torque and high vibration applications, like those common in import engines. This premium RTV gasket maker exceeds manufacturers' performance requirements, featuring maximum vibration resistance and outstanding resistance to oils, cooling and shop fluids. Non-corrosive and low-odor. OEM specified, with a temperature range of -65 degrees fahrenheit to 500 degrees fahrenheit, intermittent. Permatex always has the right gasket maker for your application.
DG
Reviewed in the United States on March 2, 2025
If you're using this for a one-time application, you may want to opt for a smaller tube. However, if you use RTV a lot, this tube will last you a long time and the price is on-point. I saved quite a bit overall by just buying the bigger tube instead of smaller individual tubes. This is like that Granny's hot sauce- I use this s*** on everything!Very good stuff, you can cap the tube for reuse. Good high-temp RTV that resists oil and stuff. I've used it on applications like metal-to-plastic and the adhesion is great. The ease of use and thickness is also better than the smaller tubes in my opinion, because you can control the flow using any caulk gun of your choice.I recommend using a "finger" from nitrile gloves to cap the tube along with a wood screw or bolt.The only downside is it takes a while to cure compared to other similar RTVs (like "Great Stuff", etc).I used this to seal around a throttle body that had a snapped corner bolt on a bmw m50 motor, this was plastic-on-metal, and this RTV has held up for literally over 5 years so far with no signs of cracking or anything else. That's after hundreds or possibly thousands of heat cycles and exposure to CCV oils, etc.So yeah, It's very good.
Rodger Tindal
Reviewed in the United States on February 21, 2025
good morning........good stuff; thank you
Larry
Reviewed in the United States on January 6, 2025
It's easy to use and really seals and makes a water proof gasket,excellent .
Porkster
Reviewed in the United States on January 22, 2025
Works great and a good price
JJ
Reviewed in the United States on October 26, 2024
Used for my thermostat housing gasket to keep in place during install. Will also use on my timing cover for same purpose. The gasket doesn't always seal porous metal surfaces so a good idea to apply a light skin of this to seal up any irregularities.Let it skin over a bit and will seal/stick very well. Permatex quality cannot be beat. Just make sure you use the right "color" for the correct application!
JP
Reviewed in the United States on October 25, 2024
Bought for a 1982 Yamaha Virago 750 rebuild project. Used between the two case halves when reassembling. Used as directed, it worked perfectly and haven't had any issues or leaks whatsoever. Plenty left over for future use and the container keeps the goo safe and wet. Have used it randomly for other things here and there. Very rubbery when dry. Great stuff, highly recommend.
Linda Fleming
Reviewed in the United States on October 21, 2024
It’s sensor safe and non-corrosive, making it perfect for automotive applications. I used it on a critical gasket, and it performed exceptionally well. No leaks, and it has great adhesion.
Blas Castaneda
Reviewed in Mexico on January 6, 2024
Se uso para reparar motor 1.8Al aplicarlo fue necesario instalar lo mas pronto posible la cubierta del cigueñal y apretar con torqueya que seca muy rapido.
The Honest Reviewer
Reviewed in Canada on January 29, 2024
This is the best high temp gasket seal you can buy in North America. Top quality material and ingredients make this a shelf stable long lasting product that not only keep well but it seals even better.Perfect for those Coolant port seals and any other hight temp leak prone areas.5 star product and Honest Reviewer approved!
Xfilereg
Reviewed in Canada on December 13, 2023
Works better than expected!
Esmail
Reviewed in Saudi Arabia on October 19, 2023
used it for a car water pump change it does the job like other RTVs I tried , other reason because it says " it's save for sensors ".
strimbeanu marius cristian
Reviewed in Germany on July 11, 2020
Very good product !!!
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