---
product_id: 77750006
title: "Momentive RTV103 One Part Silicone Sealant, 10.1 Ounce Caulker, Black"
brand: "momentive"
price: "FREE"
currency: TND
in_stock: false
url: https://www.desertcart.tn/products/77750006-momentive-rtv103-one-part-silicone-sealant-10-1-ounce-caulker
store_origin: TN
region: Tunisia
---

# 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:** FREE
**Availability:** ❌ Out of 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?** FREE with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/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.

## 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 | #484,527 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #686 in Silicone Adhesives #1,866 in Caulk |
| Brand Name | Momentive |
| Color | Black |
| Compatible Material | Ceramic, Glass |
| Customer Reviews | 4.2 4.2 out of 5 stars (63) |
| Global Trade Identification Number | 00013227029501, 00779008003305 |
| Item Form | Paste |
| Item Type Name | RTV Silicone |
| Item Weight | 4 kg |
| Manufacturer | Momentive |
| Material Type | Silicone |
| Model | RTV103-300ML |
| Number of Items | 1 |
| Number of Packs | 1 |
| Part Number | RTV103-300ML |
| 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 kg
- **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/31IV+vxC1WL.jpg)
![Momentive RTV103 One Part Silicone Sealant, 10.1 Ounce Caulker, Black - Image 2](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

## 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

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*Product available on Desertcart Tunisia*
*Store origin: TN*
*Last updated: 2026-09-30*