---
product_id: 14063921
title: "212184 5900 Flange Sealant, Heavy Body RTV Silicone, 300 mL Cartridge, Black"
brand: "loctite"
price: "€ 156.38"
currency: EUR
in_stock: true
reviews_count: 8
category: "Loctite"
url: https://www.desertcart.com.cy/products/14063921-212184-5900-flange-sealant-heavy-body-rtv-silicone-300-ml
store_origin: CY
region: Cyprus
---

# Full cure in 24 hours Black silicone for sleek, professional finish 300 mL heavy body cartridge 212184 5900 Flange Sealant, Heavy Body RTV Silicone, 300 mL Cartridge, Black

**Brand:** loctite
**Price:** € 156.38
**Availability:** ✅ In Stock

## Summary

> 🖤 Seal like a pro, leak like never before!

## Quick Answers

- **What is this?** 212184 5900 Flange Sealant, Heavy Body RTV Silicone, 300 mL Cartridge, Black by loctite
- **How much does it cost?** € 156.38 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.cy](https://www.desertcart.com.cy/products/14063921-212184-5900-flange-sealant-heavy-body-rtv-silicone-300-ml)

## Best For

- loctite enthusiasts

## Why This Product

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

## Key Features

- • **Trusted by Pros:** Preferred choice for Mercedes engine assemblies—no gasket needed, zero leaks
- • **Heavy-Duty Volume:** 300 mL cartridge designed to tackle multiple engine assemblies or large projects
- • **Instant Seal Power:** Starts sealing on contact—no waiting, no mess
- • **Low Odor, Low Volatility Formula:** Comfortable to use indoors without harsh chemical fumes
- • **Unmatched Flexibility & Adhesion:** Superior RTV silicone ensures a durable, leak-proof seal every time

## Overview

Loctite 212184 5900 Flange Sealant is a premium heavy body RTV silicone in a 300 mL cartridge, delivering superior flexibility, instant sealing, and a non-corrosive, low-odor formula. Trusted by automotive professionals for flawless gasketless sealing on high-performance engines, it cures fully in 24 hours and resists water, making it the go-to sealant for demanding industrial and mechanical applications.

## Description

Superior flexibility and adhesion. Provides instant seal. Non-corrosive, low odor, and low volatility.

Review: Very expensive but a very good product - I have used this on a couple Mercedes engine assemblies now. Timing Cover, Valve Covers, Oil Pan on these later Mercedes engines they are all sealed with this special silicone and no gaskets. I have read of other techs needing to re do the job due to leaks because they try to use lower quality silicone products. This one works well as intended. Costs a lot but works. The large tube is enough to do several engines. No leaks on my work so far.
Review: Worth the money - A bit pricey but does an excellent job. I used it for sealing an oil pan in a diesel engine.

## Features

- Superior flexibility and adhesion
- Provides instant seal
- Non-corrosive, low odor, and low volatility

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B002BWH0WQ |
| Best Sellers Rank | #118,527 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #223 in Silicone Adhesives |
| Brand | Loctite |
| Color | Black |
| Date First Available | June 1, 2009 |
| Full Cure Time | 24 Hours |
| Global Trade Identification Number | 00079340201668 |
| Is Discontinued By Manufacturer | No |
| Item Form | Liquid |
| Item Weight | 14.4 ounces |
| Item model number | 20166 |
| Liquid Volume | 10.14 Fluid Ounces |
| Manufacturer | Loctite |
| Material | Silicone |
| Maximum Gap Fill | 0.25 Inches |
| Number of Items | 1 |
| Surface Recommendation | Miscellaneous |
| UPC | 079340201668 |
| Unit Count | 1.0 Count |
| Water Resistance Level | Water Resistant |

## Product Details

- **Brand:** Loctite
- **Color:** Black
- **Full Cure Time:** 24 Hours
- **Item Form:** Liquid
- **Liquid Volume:** 10.14 Fluid Ounces

## Images

![212184 5900 Flange Sealant, Heavy Body RTV Silicone, 300 mL Cartridge, Black - Image 1](https://m.media-amazon.com/images/I/71TbD3KjohL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Very expensive but a very good product
*by M***D on March 23, 2023*

I have used this on a couple Mercedes engine assemblies now. Timing Cover, Valve Covers, Oil Pan on these later Mercedes engines they are all sealed with this special silicone and no gaskets. I have read of other techs needing to re do the job due to leaks because they try to use lower quality silicone products. This one works well as intended. Costs a lot but works. The large tube is enough to do several engines. No leaks on my work so far.

### ⭐⭐⭐⭐⭐ Worth the money
*by E***A on January 2, 2024*

A bit pricey but does an excellent job. I used it for sealing an oil pan in a diesel engine.

### ⭐ $61 tube of caulk hard as a rock unusable garbage
*by C***N on July 26, 2021*

$61 tube of caulk Loctite ran hard as a rock totally unusable

## Frequently Bought Together

- Loctite 212184 5900 Flange Sealant, Heavy Body RTV Silicone, 300 mL Cartridge, Black
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**Shop now:** [https://www.desertcart.com.cy/products/14063921-212184-5900-flange-sealant-heavy-body-rtv-silicone-300-ml](https://www.desertcart.com.cy/products/14063921-212184-5900-flange-sealant-heavy-body-rtv-silicone-300-ml)

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*Product available on Desertcart Cyprus*
*Store origin: CY*
*Last updated: 2026-03-13*