---
product_id: 286747770
title: "Black RTV Sealant - 3 oz. 3 Ounce Blue 31316"
brand: "j-b weld"
price: "308247₫"
currency: VND
in_stock: true
reviews_count: 8
url: https://www.desertcart.vn/products/286747770-black-rtv-sealant-3-oz-3-ounce-blue-31316
store_origin: VN
region: Vietnam
---

# Cures tough without shrinking or cracking Waterproof & weather-resistant seal RTV silicone tech for durable bonds Black RTV Sealant - 3 oz. 3 Ounce Blue 31316

**Brand:** j-b weld
**Price:** 308247₫
**Availability:** ✅ In Stock

## Summary

> 🛠️ Seal it like a pro — don’t let leaks hold you back!

## Quick Answers

- **What is this?** Black RTV Sealant - 3 oz. 3 Ounce Blue 31316 by j-b weld
- **How much does it cost?** 308247₫ with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.vn](https://www.desertcart.vn/products/286747770-black-rtv-sealant-3-oz-3-ounce-blue-31316)

## 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

- • **Compact & Lightweight:** 3 oz tube fits neatly in your toolkit for on-the-go repairs and projects.
- • **Pro-Grade RTV Silicone:** Trusted by builders and mechanics for reliable, long-lasting seals.
- • **Weatherproof & Durable:** Resists cracking, shrinking, and harsh weather for a seal that lasts.
- • **Versatile Surface Bonding:** Bonds uneven and diverse materials effortlessly, perfect for automotive and household fixes.
- • **Easy Application & Fast Curing:** Forms a tough, waterproof seal at room temperature with minimal hassle.

## Overview

J-B Weld Black RTV Sealant is a 3 oz professional-grade silicone adhesive designed for sealing and bonding uneven surfaces. It cures at room temperature to form a tough, waterproof, and weather-resistant seal that won’t shrink or crack, making it ideal for automotive repairs and household projects.

## Description

J-B Weld Black RTV Sealant - 3 oz. 3 Ounce Blue 31316

## Features

- RTV SILICONE SEALANT & ADHESIVE: Is a general purpose RTV (Room Temperature Vulcanized) Silicone, designed for sealing and bonding uneven surfaces
- WHAT THE PROFESSIONALS USE: Builders, mechanics & repair pros know our products bond strong to a variety of surfaces in even the toughest environments. Choose the product pros trust for your project
- EASY TO USE: Upon curing, the silicone forms a tough, waterproof seal on most surfaces. It will not shrink or crack, resists weathering and is great for many automotive accessories and household uses

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | JBWeld |
| Brand | J-B Weld |
| Model | 31316 |
| Product Dimensions | 5 x 4 x 16 cm; 90 g |
| Item model number | 31316 |
| Manufacturer Part Number | 31316 |
| Special Features | Strong, Waterproof |
| Item Weight | 90 g |

## Product Details

- **Material:** Silicone
- **Brand:** J-B Weld
- **Style:** Classic
- **Item weight:** 0.09 Kilograms
- **Item dimensions L x W x H:** 50 x 40 x 160 millimeters

## Images

![Black RTV Sealant - 3 oz. 3 Ounce Blue 31316 - Image 1](https://m.media-amazon.com/images/I/81mYGbFpgjL.jpg)

## Available Options

This product comes in different **Color, Size** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Works great
*by A***I on 4 February 2025*

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.

### ⭐⭐⭐⭐⭐ Good seal
*by N***I on 31 January 2025*

Amazing

### ⭐⭐⭐⭐ Great Product-couldnt use 100%
*by T***I on 4 April 2021*

Couldn't use 100 % of the material.started to used the product, kept the top plastic nozzle small (level 1-2), as to fill in smaller cavities.....the reason for my purchase.Somewhere midway of my job, not sure why, the tube punctured at the bottom, I guess due to pressure on top nozzle . later had to use my hands instead. Had to spent more time leaning it out.It was much easier to use the part flowing at the base, rather leaner way through the top nozzle.

## Frequently Bought Together

- J-B Weld 31316 RTV Silicone Gasket Maker and Sealant - 3 oz. - Blue
- Permatex 85080 Ultra Black Maximum Oil Resistance RTV Silicone Gasket Maker, Sensor Safe And Non-Corrosive, For High Flex And Oil Resistant Applications 9.5 oz
- Permatex 81630 Ultra Red High Temperature Gasket Maker, 3 oz

---

## Why Shop on Desertcart?

- 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016
- 🌍 **Shop Globally** — Access 737+ million products across 21 categories
- 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price
- 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members)
- 🔒 **Secure Payments** — Trusted payment options with buyer protection
- ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews

**Shop now:** [https://www.desertcart.vn/products/286747770-black-rtv-sealant-3-oz-3-ounce-blue-31316](https://www.desertcart.vn/products/286747770-black-rtv-sealant-3-oz-3-ounce-blue-31316)

---

*Product available on Desertcart Vietnam*
*Store origin: VN*
*Last updated: 2026-01-25*