---
product_id: 77750006
title: "Momentive RTV103 One Part Silicone Sealant, 10.1 Ounce Caulker, Black"
brand: "momentive"
price: "392 kr"
currency: DKK
in_stock: true
reviews_count: 8
category: "Momentive"
url: https://www.desertcart.dk/products/77750006-momentive-rtv103-one-part-silicone-sealant-10-1-ounce-caulker
store_origin: DK
region: Denmark
---

# Black paste consistency Temp range -75°F to 400°F Adheres to metals, glass & plastics Momentive RTV103 One Part Silicone Sealant, 10.1 Ounce Caulker, Black

**Brand:** momentive
**Price:** 392 kr
**Availability:** ✅ In Stock

## Summary

> 🖤 Seal like a pro, last like a legend.

## Quick Answers

- **What is this?** Momentive RTV103 One Part Silicone Sealant, 10.1 Ounce Caulker, Black by momentive
- **How much does it cost?** 392 kr with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.dk](https://www.desertcart.dk/products/77750006-momentive-rtv103-one-part-silicone-sealant-10-1-ounce-caulker)

## Best For

- momentive enthusiasts

## Why This Product

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

## Key Features

- • **Food-Safe & Certified:** Meets FDA, USDA, MIL-Spec, and UL standards—safe for food contact and industrial use.
- • **Precision Application:** Paste consistency ideal for vertical and overhead surfaces where runny sealants fail.
- • **All-Weather Resilience:** Withstands extreme temps from -75°F to 400°F for unmatched durability indoors and out.
- • **Versatile Surface Grip:** Bonds effortlessly to metals, glass, ceramics, silicone rubber, and select plastics—no primer needed.
- • **Waterproof & Long-Lasting:** Creates a tough, flexible seal that resists water and lasts for years, even in aquariums.

## Overview

Momentive RTV103 is a premium one-part black silicone sealant with a paste consistency designed for filling gaps up to 1/4" wide. It offers exceptional adhesion to a wide range of materials without primer, withstands extreme temperatures from -75°F to 400°F, and meets rigorous FDA, USDA, MIL-Spec, and UL certifications. Perfect for demanding indoor and outdoor sealing projects requiring durability, waterproofing, and food-safe compliance.

## Description

General purpose, one-part silicone sealant that cures to a tough, durable, resilient silicone rubber on exposure to atmospheric moisture at room temperature. Standard strength paste consistency product that can be applied to vertical and overhead surfaces where pourable / self-leveling sealants are not practical. Has excellant low and high temperature performance (-75° to 400°F). Can be used in food contact applications where FDA regulations apply (Reference: CDS4319). Recognized by UL under UL FIle # E-36952.

Review: Great seal on 144G aquarium, has some serious fumes though - Resealed a 144 gallon aquarium, just the inside seal without taking aquarium apart, no problems at all after about 2 years. Good stuff and worth the peace of mind even if a little pricier than some others. Fumes were pretty strong, would try and have some ventilation for the curing period.
Review: Works well - Good quality, easy to use, and quick drying time. My only disappointment was the shiny finish. Wish it were a matte finish for my particular project. Good value for the price

## Features

- One-part black RTV silicone sealant with a paste consistency for filling and sealing gaps or cracks up to 1/4" wide in indoor and outdoor applications
- Paste consistency allows for application on vertical or overhead surfaces
- Adheres to many metals, glass, ceramic, silicone rubber, and some rigid plastics without the use of primer
- Continuous service range is -75 to +400 degrees F (-60 to +204 degrees C) and intermittent service range is -75 to +500 degrees F (-60 to +260 degrees C)
- Meets Military Specification MIL-A-46106 and NSF Standard 51, is FDA 21 CFR 177.2600 compliant, is USDA compliant, and has UL recognized components

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B077GWBMFF |
| Best Sellers Rank | #315,367 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #474 in Silicone Adhesives #1,357 in Caulk |
| Brand | Momentive |
| Brand Name | Momentive |
| Color | Black |
| Compatible Material | Ceramic, Glass |
| Customer Reviews | 4.0 out of 5 stars 62 Reviews |
| Global Trade Identification Number | 00013227029501, 00779008003305 |
| Item Form | Paste |
| Item Type Name | RTV Silicone |
| Item Weight | 4 Kilograms |
| Manufacturer | Momentive |
| Material | Silicone |
| Material Type | Silicone |
| Style | RTV103 |
| Style Name | RTV103 |
| Surface Recommendation | Tile, Pipe, Counter Top, Window, Door, Sink, Tub, Walls |
| UPC | 013227029501 779008003305 |
| Unit Count | 1 Count |
| Warranty Description | warranty@mgchemicals.com |
| Water Resistance Level | Waterproof |

## Product Details

- **Brand:** Momentive
- **Item Weight:** 4 Kilograms
- **Material:** Silicone
- **Style:** RTV103
- **Water Resistance Level:** Waterproof

## Images

![Momentive RTV103 One Part Silicone Sealant, 10.1 Ounce Caulker, Black - Image 1](https://m.media-amazon.com/images/I/71XGlt4Cu7L.jpg)

## Questions & Answers

**Q: Can this be used to bond rocks together in an aquarium?**
A: I wouldn’t think so. You’re probably better off using a reef safe epoxy.

**Q: can I use this product to built fish tank**
A: I used it to reseal a 40 long and it worked great. I used it after finding many tank builders swear by it. It skins over reasonably quickly, so plan accordingly.

**Q: How long is the full cure time?**
A: the tube says 24 hours depending on temperature, humidity, and thickness. mine took longer, about 48 hours. it was 55 degrees, 3/8 inch thick, and humidity was around 65%

**Q: Aquarium safe?**
A: Yes

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great seal on 144G aquarium, has some serious fumes though
*by D***S on August 7, 2024*

Resealed a 144 gallon aquarium, just the inside seal without taking aquarium apart, no problems at all after about 2 years. Good stuff and worth the peace of mind even if a little pricier than some others. Fumes were pretty strong, would try and have some ventilation for the curing period.

### ⭐⭐⭐⭐⭐ Works well
*by N***K on September 1, 2024*

Good quality, easy to use, and quick drying time. My only disappointment was the shiny finish. Wish it were a matte finish for my particular project. Good value for the price

### ⭐ Mislabeled!
*by C***K on October 15, 2024*

I never used this product. So when I read rtv100 series I took it as black because the stick on lable read black product was mislabeled. Unfortunately I do not have time to trplace so I just paid more then I should have for a product! I also attenpted to contact RTV for recommendations on a cleaning product and never recieved an answerI'll stick with ASI from now on. This company does not care about there customers

## Frequently Bought Together

- Momentive RTV103 One Part Silicone Sealant, 10.1 Ounce Caulker, Black
- Momentive RTV100 Silicone, One-Part, Translucent, 300mL Cartridge
- Momentive RTV103 One Part Silicone Sealant, 2.8 Ounce Tube, Black

---

## 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.dk/products/77750006-momentive-rtv103-one-part-silicone-sealant-10-1-ounce-caulker](https://www.desertcart.dk/products/77750006-momentive-rtv103-one-part-silicone-sealant-10-1-ounce-caulker)

---

*Product available on Desertcart Denmark*
*Store origin: DK*
*Last updated: 2026-03-04*