---
product_id: 394936199
title: "J-B Weld 31312 White All-Purpose RTV Silicone Sealant and Adhesive - 3 oz."
brand: "j-b weld"
price: "¥3538"
currency: JPY
in_stock: true
reviews_count: 8
category: "J B Weld"
url: https://www.desertcart.jp/products/394936199-j-b-weld-31312-white-all-purpose-rtv-silicone-sealant
store_origin: JP
region: Japan
---

# 100% Waterproof Seal Strong Bond on Multiple Surfaces RTV Silicone - Cures at Room Temp J-B Weld 31312 White All-Purpose RTV Silicone Sealant and Adhesive - 3 oz.

**Brand:** j-b weld
**Price:** ¥3538
**Availability:** ✅ In Stock

## Summary

> 🔧 Seal it, fix it, own it — the ultimate bond for every project!

## Quick Answers

- **What is this?** J-B Weld 31312 White All-Purpose RTV Silicone Sealant and Adhesive - 3 oz. by j-b weld
- **How much does it cost?** ¥3538 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/394936199-j-b-weld-31312-white-all-purpose-rtv-silicone-sealant)

## 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

- • **Effortless DIY Mastery:** Easy-to-use gel formula cures with ambient moisture—perfect for quick fixes and professional results.
- • **Mold & Mildew Resistant:** Keeps your seals clean and intact, ensuring long-lasting performance without shrinkage or cracking.
- • **Trusted Legacy of Strength:** Backed by 40+ years of innovation, delivering the world’s strongest bond for your critical repairs.
- • **Unmatched Waterproof Durability:** Creates a tough, crack-resistant seal that stands up to rain, moisture, and weathering.
- • **Versatile Surface Compatibility:** Bonds seamlessly to glass, metal, plastic, and more—ideal for home, automotive, and industrial projects.

## Overview

J-B Weld 31312 White All-Purpose RTV Silicone Sealant & Adhesive is a premium, room-temperature curing silicone gel that forms a waterproof, mold-resistant, and weatherproof seal on multiple surfaces including glass, metal, and plastic. Trusted for over 40 years, it delivers a strong, durable bond ideal for household, automotive, and mechanical repairs, ensuring no shrinkage or cracking for lasting performance.

## Description

J-B Weld White Silicone Sealant & Adhesive is a general purpose Sealant Adhesive RTV (Room Temperature Vulcanized) Silicone designed for use in household or mechanical assembly applications. Upon curing, which occurs when the product is exposed to the moisture in air, the silicone forms a tough, waterproof, mildew and mold resistant seal on most surfaces. It will not shrink or crack, resists weathering, is sensor safe and is great for many household and automotive applications.

Review: Excellent Sealant for Multiple Uses - This product is a great product for sealing leaks, bonding materials, or weatherproofing. I used it on a cracked window frame, and it held up perfectly against rain and wind. The clarity is excellent, and it doesn’t shrink after drying. Works on glass, metal, and plastic very handy to have around
Review: VERY Strong Bond And Temperature Rasistance - बेस्ट क्वालिटी। Nexon कार के कैथेलैटिक कनवर्टर का पाइप नीचे से लगने के कारण बैंड हो गया था और एक्जॉस्ट पाइप के फ्लांज में बीच में से बीच से ऐर जाने के कारण गाड़ी बहोत ही ज्यादा आवाज करती थी कम्पनी ने उसका खर्च करीब 70000 बताया सिर्फ एक मामूली ऐर लिक का बाहर भी पुछा बड़े गैरेज जैसे की Roger Garage कोई रिपेयर नहीं कर पाया आखिर में मेने एक दिन यह ट्यूब लगा के flange वापस जोड़ दी और 1 घंटा सूखने दिया बाद में 5Km चलाके देखा आवाज बंद हफ्ते बाद लंबी 200 Km तक इंजिन गर्म करके चलाया आवाज आना अभी तक बांध है और टयूब जैसे लगाया था वैसा का वैसा ही है तापमान से उसे कोई फर्क नहीं पड़ा थैंक्स JB weld me 70000+ बचाने लिए।

## Features

- WHITE SILICONE SEALANT & ADHESIVE: Is a general purpose Sealant Adhesive RTV (Room Temperature Vulcanized) Silicone designed for use in household or mechanical assembly applications.
- 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: Upon curing, the silicone forms a tough, waterproof seal on most surfaces. It will not shrink or crack, resists weathering and is sensor safe.
- VERSATILE AND DEPENDABLE: Perfect for tubs, showers, sinks, bathrooms, windows, interior trim, moldings, door frames, glass, automotive use and lens housings.
- 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 | B00M2USVI4 |
| Best Sellers Rank | #19,651 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #45 in Silicone Adhesives |
| Brand | J-B Weld |
| Brand Name | J-B Weld |
| Colour | White |
| Compatible Material | Glass |
| Country of Publication | USA |
| Customer Reviews | 4.5 out of 5 stars 15,312 Reviews |
| Global Trade Identification Number | 00043425313126 |
| Importer Contact Information | RedAngus Business Services, 7th & 8th Floor, Times Square Building, W.E Highway, Andheri (E) , Mumbai 400 069, info@redangus.in |
| Included Components | 1 Pack |
| Item Dimensions | 50 x 40 x 160 Millimeters |
| Item Form | Gel |
| Item Height | 16 Centimeters |
| Item Type Name | All Purpose RTV Silicone Sealant and Adhesive |
| Item Weight | 0.09 Kilograms |
| Item dimensions L x W x H | 50 x 40 x 160 Millimeters |
| Manufacturer | J-B WELD CO LLC, P.O Box 483,Sulphur Springs,TX 75483, +1 903 885-7696, j-bweld@redangus.in, JBWeld |
| Manufacturer Contact Information | J-B WELD CO LLC, P.O Box 483,Sulphur Springs,TX 75483, +1 903 885-7696, j-bweld@redangus.in |
| Material | manmade |
| Material Type | manmade |
| Packer Contact Information | J-B WELD CO LLC, P.O Box 483,Sulphur Springs,TX 75483, +1 903 885-7696, j-bweld@redangus.in |
| Style | Compact |
| Style Name | Compact |
| Surface Recommendation | Door, Shower, Window |
| UPC | 043425313126 |
| Unit Count | 1 Count |
| Warranty Description | No Warranty |
| Water Resistance Level | Waterproof |

## Product Details

- **Brand:** J-B Weld
- **Item Weight:** 0.09 Kilograms
- **Item dimensions L x W x H:** 50 x 40 x 160 Millimeters
- **Material:** manmade
- **Style:** Compact

## Images

![J-B Weld 31312 White All-Purpose RTV Silicone Sealant and Adhesive - 3 oz. - Image 1](https://m.media-amazon.com/images/I/514E8i925fL.jpg)
![J-B Weld 31312 White All-Purpose RTV Silicone Sealant and Adhesive - 3 oz. - Image 2](https://m.media-amazon.com/images/I/71FCRWMVWxL.jpg)
![J-B Weld 31312 White All-Purpose RTV Silicone Sealant and Adhesive - 3 oz. - Image 3](https://m.media-amazon.com/images/I/71NsfJTNj9L.jpg)
![J-B Weld 31312 White All-Purpose RTV Silicone Sealant and Adhesive - 3 oz. - Image 4](https://m.media-amazon.com/images/I/71ypVn79KgL.jpg)
![J-B Weld 31312 White All-Purpose RTV Silicone Sealant and Adhesive - 3 oz. - Image 5](https://m.media-amazon.com/images/I/81ryT5VTY7L.jpg)

## 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

### ⭐⭐⭐⭐⭐ Excellent Sealant for Multiple Uses
*by A***A on 17 May 2025*

This product is a great product for sealing leaks, bonding materials, or weatherproofing. I used it on a cracked window frame, and it held up perfectly against rain and wind. The clarity is excellent, and it doesn’t shrink after drying. Works on glass, metal, and plastic very handy to have around

### ⭐⭐⭐⭐⭐ VERY Strong Bond And Temperature Rasistance
*by B***L on 19 November 2023*

बेस्ट क्वालिटी। Nexon कार के कैथेलैटिक कनवर्टर का पाइप नीचे से लगने के कारण बैंड हो गया था और एक्जॉस्ट पाइप के फ्लांज में बीच में से बीच से ऐर जाने के कारण गाड़ी बहोत ही ज्यादा आवाज करती थी कम्पनी ने उसका खर्च करीब 70000 बताया सिर्फ एक मामूली ऐर लिक का बाहर भी पुछा बड़े गैरेज जैसे की Roger Garage कोई रिपेयर नहीं कर पाया आखिर में मेने एक दिन यह ट्यूब लगा के flange वापस जोड़ दी और 1 घंटा सूखने दिया बाद में 5Km चलाके देखा आवाज बंद हफ्ते बाद लंबी 200 Km तक इंजिन गर्म करके चलाया आवाज आना अभी तक बांध है और टयूब जैसे लगाया था वैसा का वैसा ही है तापमान से उसे कोई फर्क नहीं पड़ा थैंक्स JB weld me 70000+ बचाने लिए।

### ⭐⭐⭐⭐⭐ Very effective
*by C***N on 5 July 2025*

Quality products

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-01-25*