---
product_id: 17368210
title: "J-B Weld 31319 Black RTV Silicone Sealant and Adhesive - 3 oz."
brand: "j-b weld"
price: "€ 19.21"
currency: EUR
in_stock: true
reviews_count: 8
url: https://www.desertcart.hr/products/17368210-j-b-weld-31319-black-rtv-silicone-sealant-and-adhesive
store_origin: HR
region: Croatia
---

# 100% waterproof seal sleek black industrial finish 3 oz precision application J-B Weld 31319 Black RTV Silicone Sealant and Adhesive - 3 oz.

**Brand:** j-b weld
**Price:** € 19.21
**Availability:** ✅ In Stock

## Summary

> 🖤 Seal smart, seal strong — the pro’s choice for flawless finishes!

## Quick Answers

- **What is this?** J-B Weld 31319 Black RTV Silicone Sealant and Adhesive - 3 oz. by j-b weld
- **How much does it cost?** € 19.21 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/17368210-j-b-weld-31319-black-rtv-silicone-sealant-and-adhesive)

## Best For

- j-b weld enthusiasts

## Why This Product

- Trusted j-b weld brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Built to Last:** Crack-resistant and durable for long-term industrial strength.
- • **Compact Power:** 3 oz tube delivers precise control without waste—ideal for professional projects.
- • **Sleek & Stealthy:** Matte black finish blends seamlessly with painted and industrial surfaces.
- • **Waterproof Wonder:** Creates a watertight barrier perfect for tile and exterior use.
- • **Seal with Confidence:** Room Temperature Vulcanized (RTV) formula bonds uneven surfaces flawlessly.

## Overview

J-B Weld 31319 Black RTV Silicone Sealant and Adhesive is a 3 oz industrial-grade, crack-resistant, waterproof silicone designed for sealing and bonding uneven surfaces like tile. Its room temperature vulcanizing formula ensures a durable, flexible, and sleek black finish ideal for professional and DIY applications.

## Description

J-B Weld 31319 Black RTV Silicone Sealant and Adhesive - 3 oz.

## Features

- RTV Silicone sealant & adhesive : Is a general purpose RTV (Room Temperature Vulcanized) Silicone, designed for sealing and bonding uneven surfaces.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Material | Plastic |
| Brand | J-B Weld |
| Style | Industrial |
| Item Weight | 109 Grams |
| Item dimensions L x W x H | 9 x 5 x 2 inches |
| Water Resistance Level | Waterproof |
| Item Form | Oz |
| UPC | 043425313195 |
| Unit Count | 3.0 Ounce |
| Global Trade Identification Number | 00043425313195 |
| Number of Items | 1 |
| Color | Black |
| Surface Recommendation | Tile |
| Manufacturer | JBWeld |
| Model | 31319 |
| Item Weight | 3.84 ounces |
| Product Dimensions | 9 x 5 x 2 inches |
| Item model number | 31319 |
| Is Discontinued By Manufacturer | No |
| Exterior | Painted |
| Manufacturer Part Number | 31319 |
| Bulb Type | Fluorescent |
| Special Features | Crack Resistant, Strong, Waterproof |

## Product Details

- **Material:** Plastic
- **Brand:** J-B Weld
- **Style:** Industrial
- **Item Weight:** 109 Grams
- **Item dimensions L x W x H:** 9 x 5 x 2 inches

## Images

![J-B Weld 31319 Black RTV Silicone Sealant and Adhesive - 3 oz. - Image 1](https://m.media-amazon.com/images/I/81K3iYGoqNL.jpg)

## Available Options

This product comes in different **Colour Name, Size Name** options.

## Questions & Answers

**Q: My portable convection oven (heats to 500 degrees) glass door fell out of the metal bracket. Would this work to glue it back in?**
A: Be careful of sealant giving off toxic fumes the first few times you use it.  Try heating up the oven 2-3 times before actually placing food inside that could absorb the toxic off-gasses.

**Q: Would this be a good product for sealing a crack in a dishwasher liner?**
A: Yes- I did this, along with filling in a gap on the dishwasher door gasket (which was ultimately replaced).  
Worked great!  
Be sure to clean the surface and rough it up a little (a bit of sandpaper, then clean the sandpaper dust off before application of the RTV).  
Used it a few years ago- is still sealed; all is well.

**Q: Can I use it to glue shower mirror to tile in my shower**
A: I wouldn't use it for that purpose myself.  I qouls suggest an industrial caulking-type adhesive such as Loctite or Tough As Nails.

**Q: Can you remove it if needed?**
A: Believe the instructions are on the back side of the package.   You can use acetone or paint thinner to remove.Its great stuff. Works well.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Dependable Sealant and Adhesive: A Review of J-B Weld 31319 Black RTV Silicone Sealant
*by N***N on February 29, 2024*

I recently had the opportunity to use the J-B Weld 31319 Black RTV Silicone Sealant and Adhesive, and I must say, I am thoroughly impressed with its performance and versatility. As someone who frequently tackles DIY projects and repairs around the house, finding a reliable sealant and adhesive is essential, and this product certainly delivers.One of the standout features of the J-B Weld 31319 is its exceptional durability. Once applied, it forms a strong and resilient bond that withstands a wide range of environmental conditions, including temperature fluctuations, moisture, and vibration. Whether I'm sealing gaps in plumbing fixtures or bonding materials together, I can trust that this silicone sealant will hold up over time.Another aspect of this product that I appreciate is its ease of use. The nozzle allows for precise application, minimizing waste and mess during the sealing process. The consistency of the sealant is ideal—not too runny, yet smooth enough to spread evenly and fill in cracks and gaps effectively. Cleanup is also a breeze, as the excess sealant can be easily wiped away with a cloth or sponge.The black color of the sealant is a nice touch, especially for applications where aesthetics are important. It blends seamlessly with dark surfaces, providing a clean and professional finish that enhances the overall appearance of the project.Furthermore, the versatility of this product makes it a valuable addition to any toolkit. Whether I'm sealing leaks in automotive components, repairing household appliances, or even crafting custom projects, the J-B Weld 31319 proves to be a reliable solution time and time again.In conclusion, I can wholeheartedly recommend the J-B Weld 31319 Black RTV Silicone Sealant and Adhesive to anyone in need of a dependable sealant and adhesive for a variety of applications. Its durability, ease of use, and versatility make it a standout product in its category, and I will certainly continue to rely on it for all my sealing and bonding needs in the future.

### ⭐⭐⭐⭐⭐ Good bond and grabs within 30 minutes with support
*by T***M on August 6, 2025*

Great product and works extremely well.Cleaned and prepped areas needed on my camper before using.Worked perfectly for my old seals that came off and for the new seals I installed.Purchased twice.

### ⭐⭐⭐⭐⭐ J-B Weld 31319 Black RTV Silicone Sealant: A Dependable Sealing Solution
*by L***S on June 25, 2025*

The J-B Weld 31319 Black RTV Silicone Sealant is a highly reliable and versatile product that deserves a spot in any serious DIYer's or professional's toolkit. Its excellent adhesion, flexibility, and resistance to chemicals and extreme temperatures make it an ideal choice for creating durable, leak-proof seals in demanding environments, particularly in automotive applications. While requiring proper ventilation during cure and offering a strong, permanent bond, its performance consistently delivers. For dependable sealing where a black finish is desired, this J-B Weld product is a proven and highly recommended solution.

## Frequently Bought Together

- J-B Weld 31319 Black RTV Silicone Sealant and Adhesive - 3 oz.
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*Product available on Desertcart Croatia*
*Store origin: HR*
*Last updated: 2026-02-04*