Permatex 75620 Permatex 81630 Ultra Red High Temperature Gasket Maker, 3 oz, 1 Pack
Permatex 75620 Permatex 81630 Ultra Red High Temperature Gasket Maker, 3 oz, 1 Pack
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Permatex 75620 Permatex 81630 Ultra Red High Temperature Gasket Maker, 3 oz, 1 Pack

Key item features

  • Extreme Temperature Range: This gasket maker withstands temperatures from -65°F to 650°F (-54°C to 343°C), making it suitable for high-heat applications.
  • Advanced Formulation: Ultra Red is a high-performance, low-odor RTV silicone that surpasses previous generation Red RTV in heat resistance.
  • Fluid Resistance: The formula maintains its integrity and high-temperature resistance even when exposed to oils and common shop fluids.
  • Sensor Safe: Engineered as a sensor-safe and non-corrosive RTV, it protects sensitive engine components.
  • Gasket Replacement: This chemical gasket maker effectively replaces pre-cut gaskets, simplifying various high-temperature sealing tasks.
  • Versatile Applications: Ideal for demanding high-temperature areas such as exhaust manifolds, headers, turbochargers, and slip-fit exhaust parts.
  • Thermal Cycling: Designed to resist high thermal cycling, ensuring durability and consistent performance under fluctuating temperatures.
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Customer ratings & reviews

4.6 out of 5 stars
stars233 ratings95 reviews
How item rating is calculated
5.0
4.5
3.8
3.8
3.0
1.7

Reviews summary

Pros

  • : Has a non-overpowering smell.
  • : Offers affordable options compared to others.
  • : Can be applied in a thick, customizable layer.

Neutral

  • : Can be effective, but inconsistent in certain situations.
  • : Can be smooth, but also tricky due to tube design.
  • : Can be precise, but also prone to clogging.
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Showing 1-3 of 95 reviews

Apr 5, 2026
Dan
Item details
Multipack quantity: 1
5 out of 5 stars review

Verified Purchase

Easy to use, worked great and sealed the leak vey well. However the applicator attachment is not good, cumbersome to use and can't clean so it's a one time use , need to uncle disposable applicator tips

Helpful?4UW3E79JX92B927320774
Dec 8, 2025
G
Top Reviewer
Item details
Multipack quantity: 1
5 out of 5 stars review

Verified Purchase

gasket maker color red

I got an electric dirt bike scooter type thing and I didn't really know what all I needed to maintain it so I talked to Gemini assistant, I was asking about if I got caught in the rain what can I do for the battery and he recommended this a gasket maker it's just a thin layer and it'll help protect water from getting under the battery to the components causing corrosion or anything like that, the red was cheaper so I went with the red I like what difference does it make it's just going to go on the track where the battery sits down then you slide it in so when it's nice and dry it's not going to be in the way it's just slide very easy and Jim and I had told me he gave me all to what to do for my scooter the chain what to buy the alcohol what to buy how to calibrate the break how to clean the disc because manufacturer oil and dust can be on it and just tell me what to do I'm still waiting on my towels they're taking a while so I haven't got it out yet but we got it together my neighbor helped me a little bit cuz I'm handicapping I was having a little bit of hard time at being heavy and it doesn't have a center stand just a kickstand and we've been having rain and it's really cold right now where I'm at and Locust North Carolina so I haven't had it outside and I think I got all the stuff I need now some white lightning that's the oil the barrels on the chain I got the alcohol like I said to clean got the gasket maker and I'm just waiting on those towels and there's one more thing let me think some chain cleaner spray for when it gets gunked up and you know you can tell when it's going to be needing cleaned and don't have to be cleaned all the time just when it needs it so I got a can of spray I think it was a white lightning brand also, I got this little scooter on Amazon and I just live less than a mile to town I just want it to be able to go to town independently I'm a senior citizen disabled I'm 65 and it's not a problem for me I wrote a motorcycle 15 years I got one of those upright scooters with the two hard wheels I thought that would be okay don't get one of those because even if you're strong because you feel every crack and bump is horrible I hit some grass that was not cut off the sidewalk and it was around a pole but it was on the left side of the grass had grown over and it was like hitting a tree root okay and it threw me down and it broke my scooter first time on it and it was $400 I'm not going to spend $170 to fix that so I just went ahead and got this little scooter and that's why I needed everything I needed to help take care of my scooter very well and it's Fat Tires all terrain cuz it's dirt bike, but I'm a crazy old woman I've been crazy all my life but I try to be safe and I know God fights for me and he protects me. we don't know what all God has kept us from don't forget that amen

Helpful?4UW3E79JX92B927320774
May 20, 2026
Arthur
Top Reviewer
Item details
Multipack quantity: 1
5 out of 5 stars review

Verified Purchase

This should work to prevent H2o leaks...

Helpful?4UW3E79JX92B927320774