

🔥 Seal the deal with J-B Weld — where strength meets heat resistance!
J-B Weld 31314 High Temperature RTV Silicone Gasket Maker is a professional-grade, red RTV silicone sealant designed to withstand continuous temperatures up to 550ºF and intermittent spikes to 650ºF. It cures quickly upon exposure to air moisture, forming a durable, waterproof, and crack-resistant gasket ideal for automotive and mechanical applications. Trusted for over 40 years, this 3 oz. tube delivers a reliable, easy-to-use solution for DIY enthusiasts and pros alike.









| ASIN | B00ID8IUJY |
| Best Sellers Rank | 3,956 in DIY & Tools ( See Top 100 in DIY & Tools ) 103 in Sealers |
| Brand | J-B Weld |
| Customer Reviews | 4.6 4.6 out of 5 stars (6,847) |
| Date First Available | 4 July 2014 |
| Exterior | Painted |
| Item Weight | 90 g |
| Item model number | 31314 |
| Manufacturer | JBWeld |
| Manufacturer part number | 31314 |
| Model | 31314 |
| Product Dimensions | 5 x 4 x 16 cm; 90 g |
| Special Features | Crack Resistant, Strong, Waterproof |
C**R
Good product - tested to 750 degrees ! and OK
Great for attaching seal on Kamado Joe Barbeque
D**L
Really useful high temp sealant that works very well.
Great high temperature sealant, if stored properly a tube will last you years (writing this review nearly 2 years after my purchase) and its still good with no seperation. If you properly prepare the surfaces by removing all debris and grease this sealant will work for many different applications and materials - if using it on oil pans it is critical you clean the mating surfaces meticulously and degrease them thouroughly, apply a bead and smear it with a gloved finger or plastic spatula and reapply some where it thins out so you get a good even coverage to avoid it blobbing out and don't forget to retorque the pan with a criss cross pattern to make sure you're evenly spreading the torque so the rtv doesn't thin out where there are machining imperfections on the mating surfaces - if you're failing to get a oil pan seal you have a very distorted pan head which is very common, you might be better off using the proper gasket for the pan with loctite 5923 as a liquid gasket and apply this rtv on any joints using the smear technique. I've used it recently as a make shift gasket to replace a impossible to source gasket for a throttle body in a 2012 kia ceed 1.6 crdi that has a EGR and DPF, it's easy to apply with the tapered cap, it cures within a really reasonable amount of time, it's affordable and it has many applicable uses.
O**S
Did the job but cheaper options out there.
Used as a sealant for a motorcycle paper gasket, for the price it was OK. It did the job but I think they may be alternative products that would have done it cheaper.
T**N
ANOTHER GREAT PRODUCT FROM J-B WELD
Another great product from J-B Weld with great service and value from Amazon as always.
C**A
Always worked well for engine work.
Never had an issue using this if you follow the directions. Even when I don't leave it for enough time, this has helped me fix a few oil leaks. Only once my car's rear main seal leaked after changing it and using this - but I had to remove it after install because I didn't add enough RTV so the re-install might have caused my leak anyway. Either way, I wish I had followed the time guidance for that one! It will stay liquidy(?) for a few minutes at least - no need to panic if you have to apply then install something awkward. I would try again with new stuff after 20 mins if it's important and you haven't managed to seal your job together. Seems to set enough to use after an hour or two but it will not be at full strength. It's very easy to apply once, then you'll have to sort out how you're going to store it without it hardening in the nozzle. SO messy! I don't care, I don't want to remove an oil pan for a second time so I use this.
C**L
Works great!
Pretty good stuff, worked well!
A**A
Good for engines.
Very good
I**N
It’s great, I think?
Never used this stuff before or anything like it. Been rebuilding an engine from scratch for the first time. Surprisingly easy to apply, considering reviews of anything like this said it was hard to apply. Bit like icing a cake a suppose. As for whether it does the job well, smells bad and dries quick, I I’ve nothing else to compare it to but I was happy with the result so far. Let’s hope the engine is sealed as it should be.
J**K
So this was a longshot. I have a hair dryer with a diffuser. Every time I use it the diffuser goes flying off. It's hot where it clips on. So I tried a bead of this glue and the diffuser is now permanently glued to the hair dryer and will not come off. It was the PERFECT glue for this application. It would be good for anywhere you need glue that gets hot -- like a stove gasket. Great product.
C**R
I had to wait for a while for it to be delivered but I am happy that I did receive the item is described a plus plus I still recommend this seller
I**.
Es el mejor producto
M**O
Cumple las expectativas
E**B
Rien a dire de négatif
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