🔥 Seal the deal with Permatex – where high-temp meets high-performance!
Permatex 81409 High-Temp Red RTV Silicone Gasket Maker is a professional-grade sealant designed for extreme temperature ranges (-65°F to 650°F intermittent). It creates durable, formed-in-place gaskets that resist cracking, shrinking, and fluid damage, making it ideal for automotive applications like valve covers, oil pans, and timing covers. Trusted by OEMs since the 1970s, it cures fully in 24 hours and offers excellent oil resistance and torque retention, ensuring long-lasting, reliable seals for heavy-duty and high-heat environments.
| ASIN | B000HBIB80 |
| Best Sellers Rank | #29,915 in Automotive ( See Top 100 in Automotive ) #38 in Gasket Sealers |
| Brand | Permatex |
| Color | Factory |
| Customer Reviews | 4.6 4.6 out of 5 stars (257) |
| Date First Available | April 1, 2004 |
| Full Cure Time | 24 Hours |
| Global Trade Identification Number | 00686226814098 |
| Initial Hardening Time | one Hours |
| Is Discontinued By Manufacturer | No |
| Item Form | Liquid |
| Item Weight | 6.4 ounces |
| Item model number | 81409 |
| Liquid Volume | 11 Fluid Ounces |
| Manufacturer | Permatex |
| Manufacturer Part Number | 81409 |
| Material | Silicone |
| Maximum Gap Fill | 6 Millimeters |
| Model | 81409 |
| Number of Items | 1 |
| OEM Part Number | 81409 |
| Product Dimensions | 1.88 x 1.88 x 11.25 inches |
| Surface Recommendation | Clean Dry Surfaces like Valve covers, oil pans, timing covers, water pumps, and thermostat housings |
| UPC | 686226814098 |
| Unit Count | 11.0 Ounce |
| Water Resistance Level | Water Resistant |
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.
J**Z
As described.
Bought this here cause it’s 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.
L**S
.
Needed this product and it worked out great.
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.
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.
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.
V**4
It works Great and it has a lot of uses
Its my go to RTV, water pump gasket no problem , need to repair a torn gasket no problem. You will find a lot of different uses for it .
J**M
sticks motor together real good
C**S
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
2 weeks ago
3 days ago
