---
product_id: 276595710
title: "XFasten Silicone Sealant Waterproof Black Cartridge, 10.1 oz (4-Pack) Black Caulking Silicone Adhesive Sealant Cartridge for RV, General Use, Window, Door, Glass, Automotive Leak Sealing"
brand: "xfasten"
price: "฿4425"
currency: THB
in_stock: true
reviews_count: 13
category: "X Fasten"
url: https://www.desertcart.co.th/products/276595710-xfasten-silicone-sealant-waterproof-black-cartridge-10-1-oz-4
store_origin: TH
region: Thailand
---

# 100% waterproof sealant 30 min quick curing 15-year weatherproof durability XFasten Silicone Sealant Waterproof Black Cartridge, 10.1 oz (4-Pack) Black Caulking Silicone Adhesive Sealant Cartridge for RV, General Use, Window, Door, Glass, Automotive Leak Sealing

**Brand:** xfasten
**Price:** ฿4425
**Availability:** ✅ In Stock

## Summary

> 🛠️ Seal it fast, seal it right — stay leak-proof and stress-free!

## Quick Answers

- **What is this?** XFasten Silicone Sealant Waterproof Black Cartridge, 10.1 oz (4-Pack) Black Caulking Silicone Adhesive Sealant Cartridge for RV, General Use, Window, Door, Glass, Automotive Leak Sealing by xfasten
- **How much does it cost?** ฿4425 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.th](https://www.desertcart.co.th/products/276595710-xfasten-silicone-sealant-waterproof-black-cartridge-10-1-oz-4)

## Best For

- xfasten enthusiasts

## Why This Product

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

## Key Features

- • **Fast Fix Formula:** Sets and cures in just 30 minutes—perfect for urgent leak repairs and on-the-go professionals.
- • **Ultimate Weather Shield:** Industrial-grade silicone protects against UV, heat, rain, and freezing temps for up to 15 years.
- • **Versatile Surface Master:** Seals flawlessly on metal, glass, wood, stone, granite, and more—ideal for windows, doors, RVs, and automotive leaks.
- • **Flexible & Crack-Resistant:** Maintains superior adhesion and flexibility without shrinking or cracking under pressure.
- • **Smooth Precision Application:** Jam-resistant nozzle ensures clean, effortless caulking every time—no mess, no stress.

## Overview

XFasten Silicone Sealant Waterproof Black Cartridge is a professional-grade, 100% black silicone sealant designed for indoor and outdoor use. It offers superior waterproofing, UV and heat resistance, and flexibility, curing fully in 30 minutes and lasting up to 15 years. Packaged in a jam-resistant cartridge, it applies smoothly on multiple surfaces including metal, glass, wood, and stone, making it the go-to solution for durable leak sealing in windows, doors, RVs, and automotive applications.

## Description

XFasten Silicone Sealant Waterproof Black Cartridge, 10.1 oz (4-Pack) Black Caulking Silicone Adhesive Sealant Cartridge for RV, General Use, Window, Door, Glass, Automotive Leak Sealing: desertcart.com: Industrial & Scientific

Review: All Positive!!! - I want to address some of the negative comments. Please be aware of what you’re buying, and make sure you understand what you’re talking about before leaving a review. This product is an industrial-grade silicone sealant, meaning it’s designed for professional or specialized use. While it may look similar to the silicones sold at retail stores, its curing chemistry, adhesion strength, and environmental resistance are on a different level. Secondly, any product labeled “marine” or “aquarium” grade is designed with different performance characteristics and curing behaviors. These formulations are typically made to resist long-term water exposure and maintain adhesion in wet or submerged conditions, which sets them apart from general-purpose silicones. Now, regarding the chemistry — this is a neutral-cure silicone. Neutral-cure silicones release alcohols or oximes instead of acetic acid as they cure. Because of that, they tend to be more sensitive to environmental factors during curing, including temperature, humidity, surface contamination (like oils, grease, or dust), and material compatibility. While “more sensitive” is true to an extent, they’re also generally safer for metal and masonry surfaces compared to acetoxy (acid-cure) silicones, which can corrode certain materials. With that in mind, this product offers excellent value and performs exactly as described — if you follow the instructions and surface preparation guidelines carefully. I have no doubt that it can meet or even exceed its 15-year durability rating when properly applied and cured under suitable conditions. Lastly, this is not a glue. It is not marketed or intended to be one. It’s a sealant, designed to create a flexible, watertight, and weather-resistant seal — and it performs that function exactly as it should.
Review: Great product - Great seal ability and durable. Works great as a sealer and an adhesive. Highly recommend this product!

## Features

- INDUSTRIAL-GRADE WEATHERPROOF black silicone sealant that offers maximum protection against water damage, leaks, drips, UV, extreme heat, and pressure for both indoor and outdoor environment on most surfaces like metal, granite, stone, wood and glass.
- RATED TO PROTECT UP TO 15 YEARS. This black silicone sealant adhesive is laboratory tested and rated to provide protection against dark spots, stains and other damage and stains caused by weather, water leaks, drips and heat.
- EASY TO APPLY BLACK SILICONE CAULK CATRIDGE. The XFasten Waterproof Black Silicone Caulk is packed inside a high-pressure resistant cartridge that is equipped with a jam-resistant nozzle for easy and smooth application.
- QUICK SETTING AND CURING. Do you need to quickly fix a leak on your door or shower glass? We got you covered! The XFasten Silicone sealant waterproof cartridge dries, sets and cures in 30 minutes and is ready to be exposed under the scorching heat or heavy rain.
- DOES NOT SHRINK AND CRACK. With excellent adhesion, maximum flexibility and superior sheer stress resistance, our waterproof black silicone caulk will not shrink or crack even if constantly exposed under freezing temperatures, UV from scorching sunlight, or constant rain water drips.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B08B5YMQCN |
| Best Sellers Rank | #7,796 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #23 in Silicone Caulk #56 in Industrial Sealants #3,516 in Hardware |
| Brand | XFasten |
| Color | Black |
| Date First Available | June 15, 2020 |
| Full Cure Time | 3E+1 Minutes |
| Initial Hardening Time | 3E+1 Minutes |
| Item Form | Paste |
| Item Weight | 10.1 ounces |
| Liquid Volume | 10.1 Fluid Ounces |
| Manufacturer | XFasten |
| Material | 100% Black Silicone Sealant |
| Number of Items | 4 |
| Product Dimensions | 2.17 x 7.88 x 9.37 inches |
| Surface Recommendation | Window,Door |
| Tensile Strength | 350 Pounds Per Square Inch |
| Unit Count | 40.4 Ounce |
| Water Resistance Level | Waterproof |

## Product Details

- **Brand:** XFasten
- **Color:** Black
- **Full Cure Time:** 3E+1 Minutes
- **Item Weight:** 10.1 Ounces
- **Liquid Volume:** 10.1 Fluid Ounces

## Images

![XFasten Silicone Sealant Waterproof Black Cartridge, 10.1 oz (4-Pack) Black Caulking Silicone Adhesive Sealant Cartridge for RV, General Use, Window, Door, Glass, Automotive Leak Sealing - Image 1](https://m.media-amazon.com/images/I/71kcEn45npL.jpg)

## Available Options

This product comes in different **Style** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ All Positive!!!
*by L***N on October 9, 2025*

I want to address some of the negative comments. Please be aware of what you’re buying, and make sure you understand what you’re talking about before leaving a review. This product is an industrial-grade silicone sealant, meaning it’s designed for professional or specialized use. While it may look similar to the silicones sold at retail stores, its curing chemistry, adhesion strength, and environmental resistance are on a different level. Secondly, any product labeled “marine” or “aquarium” grade is designed with different performance characteristics and curing behaviors. These formulations are typically made to resist long-term water exposure and maintain adhesion in wet or submerged conditions, which sets them apart from general-purpose silicones. Now, regarding the chemistry — this is a neutral-cure silicone. Neutral-cure silicones release alcohols or oximes instead of acetic acid as they cure. Because of that, they tend to be more sensitive to environmental factors during curing, including temperature, humidity, surface contamination (like oils, grease, or dust), and material compatibility. While “more sensitive” is true to an extent, they’re also generally safer for metal and masonry surfaces compared to acetoxy (acid-cure) silicones, which can corrode certain materials. With that in mind, this product offers excellent value and performs exactly as described — if you follow the instructions and surface preparation guidelines carefully. I have no doubt that it can meet or even exceed its 15-year durability rating when properly applied and cured under suitable conditions. Lastly, this is not a glue. It is not marketed or intended to be one. It’s a sealant, designed to create a flexible, watertight, and weather-resistant seal — and it performs that function exactly as it should.

### ⭐⭐⭐⭐⭐ Great product
*by A***R on September 13, 2025*

Great seal ability and durable. Works great as a sealer and an adhesive. Highly recommend this product!

### ⭐⭐⭐⭐⭐ excellent stuff, used it to caulk 4 new windows in my house, better than HD!
*by M***M on November 2, 2025*

saved $500 installing the windows myself and this was my choice of caulking. i bought 2 tubes but needed 4, so i ran to home depot and got 2 more. the home depot ones are garbage, when i removed the shims, the windows fell down the next day, where as the amazon caulking was amazing a held the other 2 windows in. hard to believe, but it's true.

## Frequently Bought Together

- XFasten Silicone Sealant Waterproof Black Cartridge, 10.1 oz (4-Pack) Black Caulking Silicone Adhesive Sealant Cartridge for RV, General Use, Window, Door, Glass, Automotive Leak Sealing
- Bates- Caulking Silicone Gun, 10:1 Thrust Ratio, Hand Caulking Guns, No Drip
- GE All Purpose Silicone Caulk - 100% Waterproof Silicone Sealant, Stronger Adhesion, Freeze & Sun Proof - 10 oz Cartridge, Clear, Pack of 1

---

## 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.co.th/products/276595710-xfasten-silicone-sealant-waterproof-black-cartridge-10-1-oz-4](https://www.desertcart.co.th/products/276595710-xfasten-silicone-sealant-waterproof-black-cartridge-10-1-oz-4)

---

*Product available on Desertcart Thailand*
*Store origin: TH*
*Last updated: 2026-02-26*