---
product_id: 51559277
title: "791 Sealant Black 310ml"
brand: "dowsil"
price: "€ 25.50"
currency: EUR
in_stock: true
category: "Dowsil"
url: https://www.desertcart.at/products/51559277-791-sealant-black-310ml
store_origin: AT
region: Austria
---

# 20-30 min working time for precision Fast cure: tack-free in 2 hours Withstands extreme temps -40°C to 150°C 791 Sealant Black 310ml

**Brand:** dowsil
**Price:** € 25.50
**Availability:** ✅ In Stock

## Summary

> 🛠️ Seal the deal with speed and strength – don’t let leaks hold you back!

## Quick Answers

- **What is this?** 791 Sealant Black 310ml by dowsil
- **How much does it cost?** € 25.50 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.at](https://www.desertcart.at/products/51559277-791-sealant-black-310ml)

## Best For

- dowsil enthusiasts

## Why This Product

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

## Key Features

- • **Rapid Ready:** Fast curing formula goes tack-free in just 2 hours, speeding up your projects
- • **Sleek & Seamless:** Deep black color blends flawlessly with outdoor units and rubber surfaces
- • **Precision Control:** 20-30 minutes working time lets you perfect every seal without rush
- • **Weatherproof Warrior:** Resists UV, ozone, moisture & temperature extremes for lasting protection
- • **ISO Certified Quality:** Meets ISO 11600-25lm & ISO 9047 Class 50 standards for trusted performance

## Overview

Dowsil 791 Sealant Black 310ml is a high-performance silicone sealant engineered for extreme weather resistance and durability. It offers a 20-30 minute working window and fast curing, becoming tack-free in 2 hours. Certified to ISO standards, it provides a strong, flexible, and water-resistant seal ideal for outdoor and rubber surfaces, making it the go-to choice for professionals demanding reliability and speed.

## Description

Free delivery and returns on all eligible orders. Shop Dowsil 791 Sealant Black 310ml | Resists UV exposure, ozone, moisture and temperature extremes for long-term durability..

## Features

- Excellent weathering characteristics
- Resistance to radiation and temperature extremes
- 20-30 minutes working time
- Fast cure - tack free in 2 hours
- Confirms to ISO 11600-25lm and meets ISO specification 9047 Class 50

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0063PXFE4 |
| Best Sellers Rank | 50,836 in DIY & Tools ( See Top 100 in DIY & Tools ) 768 in Sealers |
| Brand | Dowsil |
| Colour | Black |
| Compatible Material | Rubber |
| Customer Reviews | 4.4 4.4 out of 5 stars (351) |
| Global Trade Identification Number | 05413278323354 |
| Included Components | 1 x tube of Dow Corning 791 in Black. |
| Item Dimensions | 50 x 50 x 235 millimetres |
| Item Form | Liquid |
| Item Highlight | Resists UV exposure, ozone, moisture and temperature extremes for long-term durability. |
| Item Type Name | External Weatherproofing Sealant |
| Item Weight | 0.37 Kilograms |
| Manufacturer | Dow Corning |
| Manufacturer Part Number | 4024907/C05 |
| Material | Silicone |
| Model Number | 4024907/C05 |
| Number of Items | 1 |
| Number of Packs | 1 |
| Product Warranty | No guarentee |
| Style Name | Compact |
| Supported Standards | ISO 11600, ISO 9047 |
| Surface Recommendation | Roof |
| Unit Count | 310.0 millilitre |
| Water Resistance Level | Water Resistant |

## Product Details

- **Brand:** Dowsil
- **Item dimensions L x W x H:** 50 x 50 x 235 millimetres
- **Item weight:** 0.37 Kilograms
- **Material:** Silicone
- **Style:** Compact

## Images

![791 Sealant Black 310ml - Image 1](https://m.media-amazon.com/images/I/61VglPdYFOL.jpg)

## Available Options

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

## Questions & Answers

**Q: I need to seal around an inset kitchen sink. Tried wickes clear and it goes white when wet. Will this do the job for me?**
A: Yes... good stuff for that or Sunday poly is also very good... different colours. . White is the most popular.

**Q: Does it stick glass**
A: I used this product to craete a seal round an outdoor 1 metre square manhole 'drain cover' over a year ago and  it has not 'degraded' at all since it was applied.  I might be wrong, but I would be fairly confident that it would stick glass pretty well. Care would be needed to avoid 'smearing' the glass tho' as it is very 'smeary and sticky Black rubbery stuff'.  Good Luck.

**Q: Would this stick a rubber seal to a runner for bifold doors?**
A: I’m not sure, I used it to seal around my sink area. I don’t even know if it’s waterproof but it works and is still there a year later .

**Q: Is this okay to use with leds?**
A: Hi, it shouldn't be a problem to use with leds.

## Frequently Bought Together

- Dowsil 791 Sealant Black 310ml
- 791 Silicone Sealant Grey 310ml
- Dowsil 785N Silicone Sealant, White 310ml

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*Product available on Desertcart Austria*
*Store origin: AT*
*Last updated: 2026-09-06*