Currently unavailable.
We don't know when or if this item will be back in stock.
Have one to sell?

J-B Weld 32325 Ultimate Copper 3 Ounces High Temperature RTV Silicone Gasket Maker and Sealant

4.7 out of 5 stars 3,270 ratings

Your transaction is secure
We work hard to protect your security and privacy. Our payment security system encrypts your information during transmission. We don’t share your credit card details with third-party sellers and we don’t sell your information to others. Find out more
Currently unavailable.

We don't know when or if this item will be back in stock.
  • HI TEMP SILICONE GASKET MAKER & SEALANT: Is an RTV Silicone gasketing material, designed for use in mechanical assemblies where continuous temperatures up to 550º F or 650º F intermittent exist.
  • WHAT THE PROS USE: Mechanics, repair pros, and any avid DIYer knows our products bond strong to a variety of surfaces in even the toughest environments; and they have always been made in the USA.
  • EASY TO USE: Curing when the product is exposed to the moisture in air, it forms a tough, waterproof seal on most surfaces. It will not shrink or crack, resists weathering and is sensor safe.
  • VERSATILE & DEPENDABLE: Ideal for automotive, metal, oil pans, exhaust manifolds, water pumps, timing covers, differential covers, drive housings and oven doors.
  • DO IT YOURSELF: Big or small, you can DIY it with J-B. Our heavy duty adhesives repair & restore it right the first time. JB Weld delivers the legendary performance of the World's Strongest Bond.

Product information

Technical Details

Additional Information

Feedback

Would you like to tell us about a lower price?

Have a question?

Find answers in product info, Q&As, reviews

There was a problem completing your request. Please try your search again later.
All Product Information Customer Q&A's Customer Reviews

Your question might be answered by sellers, manufacturers or customers who bought this product.

Please make sure that you've entered a valid question. You can edit your question or post anyway.

Please enter a question.

Product description

J-B Weld Hi-Temp Silicone Gasket Maker & Sealant is an RTV (Room Temperature Vulcanized) Silicone gasketing material, designed for use in mechanical assemblies where the existence of higher, continuous temperatures up to 550º F or 650º F intermittent might exist. Upon curing, which occurs when the product is exposed to the moisture in air, the silicone forms a tough, waterproof seal on most surfaces. It will not shrink or crack, resists weathering, is sensor safe and is great for many automotive applications.


Customer Questions & Answers

No customer reviews

5 star (0%) 0%
4 star (0%) 0%
3 star (0%) 0%
2 star (0%) 0%
1 star (0%) 0%
How are ratings calculated?

Review this product

Share your thoughts with other customers

Most helpful customer reviews on Amazon.com

Amazon.com: 4.4 out of 5 stars 430 reviews
Brenna M. Olson
5.0 out of 5 stars Satisfied! Good for rednecking vehicle repairs.
3 June 2018 - Published on Amazon.com
Verified Purchase
55 people found this helpful
E. Heinrich
1.0 out of 5 stars First squeeze of tube pushed silicone out the wrong end
29 July 2019 - Published on Amazon.com
Verified Purchase
27 people found this helpful
Steve Day
5.0 out of 5 stars Perfect for leak-proof gaskets or electrical isolation on vehicles and general repairs.
16 April 2019 - Published on Amazon.com
Verified Purchase
18 people found this helpful
Chicago John
5.0 out of 5 stars Good value and quality
21 January 2017 - Published on Amazon.com
Verified Purchase
26 people found this helpful
Needs More BLK
1.0 out of 5 stars Worked but cracked off on hottest areas of smoker firebox.
23 August 2017 - Published on Amazon.com
Verified Purchase
Customer image
1.0 out of 5 stars Worked but cracked off on hottest areas of smoker firebox.
Reviewed in the United States on 23 August 2017
it worked well on SOME of the areas on my smoker that don't get that hot, but some of the hot areas of my firebox on my smoker cracked and broke and flaked right off, even after a good cleaning/brushing of debris and a two day cure.

I will buy some more an apply it again to confirm it's use. It did plug a lot of the needed areas though.

My infared themomoter only ready at 550 degrees and the packaging stated it can hold up to 650 degrees.
Images in this review
Customer image Customer image
Customer imageCustomer image
27 people found this helpful