---
product_id: 17058346
title: "J-B Weld Hi-Temp RTV Silicone"
brand: "j-b weld"
price: "2407 kr"
currency: ISK
in_stock: true
category: "J B Weld"
url: https://www.desertcart.is/products/17058346-j-b-weld-hi-temp-rtv-silicone
store_origin: IS
region: Iceland
---

# Withstands up to 550ºF continuous heat Vibrant red for easy application visibility RTV silicone forms tough, waterproof seals J-B Weld Hi-Temp RTV Silicone

**Brand:** j-b weld
**Price:** 2407 kr
**Availability:** ✅ In Stock

## Summary

> 🔥 Seal the deal with J-B Weld’s heat-defying red silicone!

## Quick Answers

- **What is this?** J-B Weld Hi-Temp RTV Silicone by j-b weld
- **How much does it cost?** 2407 kr with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.is](https://www.desertcart.is/products/17058346-j-b-weld-hi-temp-rtv-silicone)

## 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

- • **Trusted Legacy Bond:** Over 40 years of industry-leading strength and reliability for pros who demand the best.
- • **Versatile Application:** Ideal for automotive, metal, exhaust, and more—one sealant to rule them all.
- • **Effortless DIY Mastery:** Air moisture cures quickly into a durable, crack-proof seal—perfect for your next project.
- • **Heat-Resistant Powerhouse:** Handles extreme temps up to 550ºF continuous, 650ºF intermittent—no meltdown here!
- • **Weatherproof & Sensor Safe:** Resists weathering and won’t interfere with sensitive electronics—built for modern machinery.

## Overview

J-B Weld 31314 is a high-temperature RTV silicone gasket maker and sealant designed for mechanical assemblies exposed to continuous heat up to 550ºF and intermittent spikes to 650ºF. This 3 oz. red gel cures with air moisture to form a tough, waterproof, and weather-resistant seal that won’t shrink or crack. Trusted for over 40 years, it’s perfect for automotive and metal applications, offering sensor-safe, durable bonding that empowers professionals and DIYers alike.

## Description

J-B Weld 31314 High Temperature RTV Silicone Gasket Maker and Sealant - Red - 3 oz.

## Features

- HI TEMP RED 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
- COUNT ON US: For more than 40 years, our products have earned a loyal following from people who take pride in their work. With each product we innovate, we continue to provide the world's strongest bond for your projects
- 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

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00ID8IUJY |
| Best Sellers Rank | #6,694 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #22 in Silicone Adhesives |
| Brand Name | J-B Weld |
| Color | Red |
| Compatible Material | Metal |
| Customer Reviews | 4.7 4.7 out of 5 stars (5,903) |
| Global Trade Identification Number | 00043425313140 |
| Included Components | JBWeld 31314 |
| Item Dimensions | 1.97 x 1.57 x 6.3 inches |
| Item Form | Gel |
| Item Type Name | RED SILICONE RTV GASKET MAKER - 3 OZ. |
| Item Weight | 90 Grams |
| Manufacturer | JBWeld |
| Material Type | Silicone |
| Model | 31314 |
| Number of Items | 1 |
| Part Number | 31314 |
| Style Name | Compact |
| Surface Recommendation | Door |
| UPC | 043425313140 043425700193 |
| Unit Count | 3.0 Ounce |
| Warranty Description | LIMITED WARRANTY |
| Water Resistance Level | Waterproof |

## Product Details

- **Brand:** J-B Weld
- **Item Weight:** 90 Grams
- **Item dimensions L x W x H:** 1.97 x 1.57 x 6.3 inches
- **Material:** Silicone
- **Style:** Compact

## Images

![J-B Weld Hi-Temp RTV Silicone - Image 1](https://m.media-amazon.com/images/I/715hV11MEoL.jpg)

## Available Options

This product comes in different **Size** 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.

## Frequently Bought Together

- J-B Weld 31314 High Temperature RTV Silicone Gasket Maker and Sealant - Red - 3 oz.
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- ANPTGHT 1/4” Thru-Bulk Bulkhead Plastic Hose Barb Fittings Union Adapter Fittings for Aquarium Fuel Gas Liquid Air with Metal washers (Pack of 6)

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**Shop now:** [https://www.desertcart.is/products/17058346-j-b-weld-hi-temp-rtv-silicone](https://www.desertcart.is/products/17058346-j-b-weld-hi-temp-rtv-silicone)

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*Product available on Desertcart Iceland*
*Store origin: IS*
*Last updated: 2026-07-23*