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๐ฅ Seal the deal with high-temp confidence!
Permatex 81409 High-Temp Red RTV Silicone Gasket Maker delivers professional-grade sealing with a temperature tolerance from -65ยฐF to 650ยฐF. Designed for heavy-duty automotive and industrial use, it forms durable, crack-resistant gaskets that withstand thermal cycling and resist oils and fluids. Trusted by OEMs and pros alike, this 11 oz. silicone gasket maker ensures reliable, waterproof seals on critical engine components, accelerating your repair workflow with a quick 24-hour cure.






| ASIN | B000HBIB80 |
| Best Sellers Rank | #31,751 in Automotive ( See Top 100 in Automotive ) #32 in Gasket Sealers |
| Brand Name | Permatex |
| Color | Red |
| Customer Reviews | 4.6 4.6 out of 5 stars (265) |
| Full Cure Time | 24 Hours |
| Global Trade Identification Number | 00686226814098 |
| Included Components | Auto part, Automotive Accessories, Replacement and Performance parts |
| Initial Hardening Time | 1 Hours |
| Item Form | Liquid |
| Item Type Name | #26 High-Temp Rtv Silicone Gasket Maker |
| Item Weight | 0.4 Pounds |
| Liquid Volume | 11 Fluid Ounces |
| Manufacturer | Permatex |
| Material Type | Silicone |
| Maximum Gap Fill | 6 Millimeters |
| Surface Recommendation | Clean Dry Surfaces like Valve covers, oil pans, timing covers, water pumps, and thermostat housings |
| UPC | 686226814098 |
| Unit Count | 11.0 Ounce |
| Warranty Description | Manufacturer Warranty |
| Water Resistance Level | Waterproof |
L**S
Just what I needed
I needed a high temp silicone to seal around the flashing for our wood stove chimney. It had not been sealed properly in the past, and leaked when it rained. I have used this product in the past for engine work and was familiar with the great sealing properties that it has. I was glad to find it available in caulk tube form. It worked perfectly, filling the voids and making what should be a permament seal. Now for some rain to try it! This is an excellent product.
N**.
Works extremely well
Works extremely well used for years, store properly!!!
S**E
Durability
Used the permatex to adhere a dryer door gasket to the door. Worked as expected being a permatex product. Have used their products in the past with great success and so far this job is no exception. Will continue with their products.
M**L
Exactly as Advertised and Cheap
Way cheaper than other places online and especially cheaper than the parts store. Exact product that it says it is.
L**S
.
Needed this product and it worked out great.
J**.
Much better than regular silicone
Used this stuff on China walls on a sbc. Sticks better than the silicone found in home improvement stores.
J**Z
As described.
Bought this here cause itโs significantly cheaper than auto stores. Exactly the same product, just much cheaper. Works great for repairing small engines with hard to find/make gaskets. Would highly recommend.
N**R
Wood stove rope seal adhesive
Recommended by my chimney sweep to use instead of the runny, watery glue that comes with the kits. Wood stove has been running a couple weeks now and the rope seal is still firmly attached.
J**M
really sticks
sticks motor together real good
C**S
Just the thing
Works well, holds together well, dries reasonably quickly and has lasted over a year so far, outside, with no drying or breakage, sealing a smoker door (large temp variation).
Trustpilot
1 month ago
1 month ago