---
product_id: 529075127
title: "- 100E RTV Black Silicone Caulk (12x10.1 fl.oz.) - 100% Waterproof Silicone Sealant for Kitchen and Bathroom, Shower, Toilet, Sink, Window and Door, UV Resistant, Flexible | Black, 12 Pack"
brand: "akfix"
price: "$249.90"
currency: USD
in_stock: true
reviews_count: 8
category: "Akfix"
url: https://www.desertcart.us/products/529075127-100e-rtv-black-silicone-caulk-12x10-1-fl-oz-100
store_origin: US
region: United States of America
---

# 100% Waterproof Seal Sleek Black Finish Flexible & Durable Bond - 100E RTV Black Silicone Caulk (12x10.1 fl.oz.) - 100% Waterproof Silicone Sealant for Kitchen and Bathroom, Shower, Toilet, Sink, Window and Door, UV Resistant, Flexible | Black, 12 Pack

**Brand:** akfix
**Price:** $249.90
**Availability:** ✅ In Stock

## Summary

> 🖤 Seal it like a pro — waterproof, flexible, and sleek for every project!

## Quick Answers

- **What is this?** - 100E RTV Black Silicone Caulk (12x10.1 fl.oz.) - 100% Waterproof Silicone Sealant for Kitchen and Bathroom, Shower, Toilet, Sink, Window and Door, UV Resistant, Flexible | Black, 12 Pack by akfix
- **How much does it cost?** $249.90 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/529075127-100e-rtv-black-silicone-caulk-12x10-1-fl-oz-100)

## Best For

- akfix enthusiasts

## Why This Product

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

## Key Features

- • **UV & Aging Resistant:** Retains color and integrity over time, resisting discoloration and wear even in sun-exposed areas.
- • **DIY-Friendly Application:** Smooth flow and easy tooling make it perfect for quick, clean home repairs and upgrades.
- • **Permanently Flexible Seal:** Maintains elasticity after curing to prevent cracks and ensure long-lasting durability.
- • **Professional-Grade Adhesion:** Strong bond on non-porous surfaces like glass, steel, and porcelain for a flawless finish.
- • **Ultimate Waterproof Protection:** Seals gaps with a 100% waterproof silicone formula that stands up to moisture in kitchens and bathrooms.

## Overview

Akfix 100E RTV Black Silicone Caulk is a premium, 100% waterproof sealant designed for versatile use in kitchens, bathrooms, windows, and doors. This 12-pack offers a sleek black finish with strong adhesion and permanent flexibility, curing in just one day. Ideal for DIY enthusiasts and professionals alike, it resists UV damage, aging, and discoloration, ensuring a durable, clean seal on multiple non-porous surfaces.

## Description

Product description Akfix 100E RTV All Purpose Silicone Sealant Comparison Table 100E RTV Silicone Sealant 100S Silicone Sealant AS606 Siliconized Sealant Neutral Mirror Adhesive 905N Silicone Sealant

Review: Flexible and Durable Seal - It's an economical and effective solution for sealing joints and cracks where a flexible and durable seal is needed. Its ease of application and resistance to varying conditions make it a solid choice for both DIY projects and general home maintenance.
Review: Professional, durable finish - This caulk is the unsung hero of rodent defense. PI used Akfix 100E RTV Gray Silicone Caulk to seal up the last remaining mouse-sized loopholes, and it did exactly what I needed it to do. It flows smoothly, adheres well, and cures into a tough, flexible seal that says, “This gap is permanently closed.” It’s perfect for those awkward cracks and seams where steel mesh ends or where foam alone just isn’t enough. Once cured, it looks clean, stays put, and gives peace of mind. Combined with proper gap prep, this stuff turns “maybe they can get in” into “absolutely not.” If you’re serious about mouse-proofing and want a professional, durable finish, this silicone caulk gets the job done without fuss.

## Features

- 𝗨𝗡𝗜𝗩𝗘𝗥𝗦𝗔𝗟 𝗦𝗜𝗟𝗜𝗖𝗢𝗡𝗘 All purpose RTV Silicone gap filler is terrific for bonds general-purpose in your bathroom and kitchen.
- 𝗣𝗘𝗥𝗠𝗔𝗡𝗘𝗡𝗧𝗟𝗬 𝗘𝗟𝗔𝗦𝗧𝗜𝗖 If you have multiple projects and are looking for a waterproof silicone caulk that does stay permanently flexible after curing, try our white silicone sealant.
- 𝗘𝗔𝗦𝗬 𝗗𝗜𝗬 𝗔𝗣𝗣𝗟𝗜𝗖𝗔𝗧𝗜𝗢𝗡 For DIY applications such as sealing gaps or cracks around windows, door frames, baseboards, and walls, a caulk 100E Universal Silicone is a smart choice.
- 𝗦𝗧𝗥𝗢𝗡𝗚 𝗔𝗗𝗛𝗘𝗦𝗜𝗢𝗡 It provides strong adhesion and is suitable for use on common non-porous building materials. This easy-to-use white silicone sealer is resistant to ageing, cracking and discolouring.
- 𝗠𝗔𝗡𝗬 𝗔𝗣𝗣𝗟𝗜𝗖𝗔𝗕𝗟𝗘 𝗦𝗨𝗥𝗙𝗔𝗖𝗘 Our fast-curing silicone mastic joint sealants is as a gap filler used on door, window, glass, porcelain, steel and other construction materials. Because of acidic curing, it must not be used on mirrors and sensitive metals like copper, brazen, or lead.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0BKQNN9HJ |
| Best Sellers Rank | #15,318 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #45 in Silicone Adhesives |
| Brand | Akfix |
| Brand Name | Akfix |
| Color | Black |
| Customer Reviews | 4.3 out of 5 stars 498 Reviews |
| Full Cure Time | 1 Days |
| Included Components | 12 Qty Silicone Sealant |
| Item Form | Liquid (cures to shape of application area) |
| Item Weight | 8.52 Pounds |
| Liquid Volume | 10.1 Fluid Ounces |
| Manufacturer | Akfix |
| Material Type | 12 Pack |
| Maximum Gap Fill | 0.23 Inches |
| Model | Akfix 100E-12 Pack-Black |
| Number of Items | 12 |
| Part Number | Akfix 100E-12 Pack-Black |
| Surface Recommendation | window, door, glass, porcelain, steel etc. |
| Unit Count | 12.0 Count |
| Water Resistance Level | Waterproof |

## Images

![- 100E RTV Black Silicone Caulk (12x10.1 fl.oz.) - 100% Waterproof Silicone Sealant for Kitchen and Bathroom, Shower, Toilet, Sink, Window and Door, UV Resistant, Flexible | Black, 12 Pack - Image 1](https://m.media-amazon.com/images/I/71kBvHqTJXL.jpg)

## Available Options

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

## Customer Reviews

### ⭐⭐⭐⭐⭐ Flexible and Durable Seal
*by M***Í on March 31, 2026*

It's an economical and effective solution for sealing joints and cracks where a flexible and durable seal is needed. Its ease of application and resistance to varying conditions make it a solid choice for both DIY projects and general home maintenance.

### ⭐⭐⭐⭐⭐ Professional, durable finish
*by @***S on December 23, 2025*

This caulk is the unsung hero of rodent defense. PI used Akfix 100E RTV Gray Silicone Caulk to seal up the last remaining mouse-sized loopholes, and it did exactly what I needed it to do. It flows smoothly, adheres well, and cures into a tough, flexible seal that says, “This gap is permanently closed.” It’s perfect for those awkward cracks and seams where steel mesh ends or where foam alone just isn’t enough. Once cured, it looks clean, stays put, and gives peace of mind. Combined with proper gap prep, this stuff turns “maybe they can get in” into “absolutely not.” If you’re serious about mouse-proofing and want a professional, durable finish, this silicone caulk gets the job done without fuss.

### ⭐⭐⭐⭐⭐ as described
*by I***G on March 23, 2025*

I got this to reseal my Daughters shower -- for whatever reason she tried doing it herself -- the Caulk that she used wasn't setting up (she tried two kinds -- evidence out to trash) -- I know she did something wrong but I don't know what -- off to Disney she went while I cleaned the newly placed Caulking and redid her work -- this Silicone caulk had the lowest odor of any that I have used in my 74 years -- it feathered well, cured with no issues and the color matched perfectly (it's not easy to find Gray Caulking locally) -- it has a fairly long workability time so I was able to wipe off the excess without any issues -- I tried tapeing the lines but the tape wouldn't stick to the tiles -- no I didn't clean the tile first -- it's her house, not mine LOL -- I checked two days later -- the Caulk is firmly in place and ready for use -- I would order again but not soon because I'm keeping the second tube for myself -- pro tip: if your caulking gun doesn't have a lever to switch to a no-drip mode I suggest you look into one -- I ordered one at the same time and was really pleased that I didn't have to continually release the pressure after every squeese

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-10-17*