




🛠️ Seal it like a pro — don’t let your projects settle for less!
J-B Weld Black RTV Sealant is a professional-grade, room temperature vulcanizing silicone adhesive and sealant. It forms a tough, waterproof, and weather-resistant bond on uneven surfaces, curing in about an hour. Highly rated and trusted by builders and mechanics, this 3 oz tube is perfect for automotive repairs, household fixes, and industrial applications where durability and reliability are non-negotiable.





| ASIN | B00LIRG8VY |
| Best Sellers Rank | #12 in Automotive ( See Top 100 in Automotive ) #1 in Automotive Fillers, Adhesives & Sealants |
| Brand | J-B Weld |
| Customer Reviews | 4.3 4.3 out of 5 stars (15,275) |
| Date First Available | 16 September 2014 |
| Item Weight | 90 g |
| Item model number | 31316 |
| Manufacturer | JBWeld |
| Manufacturer Part Number | 31316 |
| Model | 31316 |
| Product Dimensions | 5 x 4 x 16 cm; 90 g |
| Special Features | Strong, Waterproof |
G**.
perfect size and quality
perfect size and quality
A**I
Works great
At first i used it with the nozzle but its hard to squish it out so I had to cut it from the second circle to make the hole bigger which worked, please do not force it through the smallest hole since Ive seen some comments complaining that it bursted open and made a mess. I would recommend you remove the nozzle when you are almost done and clean it properly by passing tissue through it, using some of that product leftover. While this might be messy and a bit wasteful it will prevent both the tube and the nozzle from drying up since the nozzle doesnt have a seal. Now i use it without without nozzle and it still works nice for areas that dont require precise application or tight areas and its an amazing adhesive, it says it dries in 1h but id recommend leaving it at least half a day, do the work at night and leave it overnight maybe. Ive used it to glue some shelfs in the kitchen and put spices and sauces which can be quite heavy, left milk and other heavy items to test the durability and its been 3 weeks holding all that weight, also used the glue to seal corners in the bathroom and its completely waterproof once dry. The next time u open the tube there will be a dried up crust on the top, if u squeeze a bit it should come out, i didnt throw it away and actually placed it back once im done using the product and this actually works as a second seal that prevents another dry crust. Overall amazing product.
N**I
Good seal
Amazing
S**D
original and good quality
all good
S**S
Good
Good
S**D
جيد
M**K
Nice thing
Used for washing machine gasket. Does the job well
A**R
Tried twice, 2 times a failure
First time I bought this product I used it in the morning, and in the afternoon all the silicon in the application tube was all dried up and I wasn't able to use it anymore. Because the job wasn't completed, the silicon drying up in the application tube might have been my own mistake (how to remove the silicion from the tube is a mystery for me thought) I bought a second product. While applying the product with a gentle squeeze the back of the product just opened up and all the silicon squirted out. Very dissapointing in the end.
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
R**H
الشحن والتغليف جدا ممتاز واشكر البائع على حسن تعامله وصدقه وايضا شكر لك يالغالي على كرت العمل الخاص بكم وايضا على كروكي الموقع الخاص بمحلكم انا من الرياض واحسدكم يا أهل جده على المحلات الممتازه جدا عندكم وضمنهم هذا المحل 😂 ما شاء الله تبارك الله طبعا المنتج اصلي وحقيقاً لم أقم بتجربة الى الان لكني مؤقن بإذن الله انه بيحل الامور بشكل بسيط جدا طلبت هالمعجون لاني ناوي اركب عدسات على شمعات سيارتي وعندي الغراء الخاص بالشمعات الي اسمه بوتيل لكن احب دائما اكون في السيفت سايد (الجهة الامنة) واقطع الشك باليقين وبستخدمه بعد ما اركب الغراء الخاص بالشمعات وبحط من المعجون على خارج الشمعة لجل أمنع اي شكل من أشكال الرطوبه او تسريب الماء والغبار وأساسا هالنوع مصمم على ان يتم استخدام مثلا على كارتير زيت مكينة سيارة والمكان ذا حار جدا بسبب الزيت ويتعرض لكل العوامل ويبقى ممتاز ولا يتأثر بشيء 🌹
I**.
Es el mejor producto
C**R
Great for attaching seal on Kamado Joe Barbeque
C**.
Quality is great! I used on a waterpump install on a Nissan Xterra and no leaks or issues after a year! Product is still usable and hasn't went bad in tube.
Trustpilot
3 weeks ago
3 weeks ago