--- product_id: 691443984 title: "791 Silicone Sealant Grey 310ml" brand: "dowsil" price: "£46.13" currency: GBP in_stock: true reviews_count: 4 category: "Dowsil" url: https://www.desertcart.co.uk/products/691443984-791-silicone-sealant-grey-310ml store_origin: GB region: United Kingdom --- # Tack-free in 30 minutes Adheres to multiple substrates Superior weatherproofing 791 Silicone Sealant Grey 310ml **Brand:** dowsil **Price:** £46.13 **Availability:** ✅ In Stock ## Summary > 🔧 Seal the deal with speed and strength—because your projects deserve the best! ## Quick Answers - **What is this?** 791 Silicone Sealant Grey 310ml by dowsil - **How much does it cost?** £46.13 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/691443984-791-silicone-sealant-grey-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 - • **Universal Grip:** Bonds seamlessly to wood, metal, concrete, glass, plastic, and composites—one sealant to rule them all. - • **Fast-Track Sealing:** Achieve a tack-free finish in just 30 minutes—no downtime, no delays. - • **Smooth Application:** Optimized viscosity for easy dispensing and flawless smoothing with just a wet finger. - • **All-Weather Warrior:** Engineered to resist ozone, UV rays, and temperature extremes for year-round durability. - • **Trusted by Pros & DIYers:** Highly rated with 4.6 stars, perfect for commercial and domestic projects alike. ## Overview The 791 Silicone Sealant Grey 310ml by Dowsil is a one-part neutral silicone designed for superior adhesion across diverse exterior materials. It offers rapid curing with tack-free properties in 30 minutes and exceptional resistance to weather elements including UV, ozone, and temperature fluctuations. Ideal for both commercial and domestic use, this waterproof sealant ensures durable, flexible, and professional-grade sealing every time. ## Description used for both commercial and domestic applications, and provides excellent adhesion to most exterior substrates. It has excellent weathering characteristics, including resistance to ozone, UV radiation and temperature extremes Review: This is by far the best sealant to seal up bait boat hulls. It dries quick, easy to work with, smooths great with the help of soapy water, its not too thick so you dont have to struggle pumping it out with the gun. Nice rich dark black semi-gloss colour, blend in well with black gloss abs. Good value for money as 1 tube will do most boats that require sealing (microcat/technicat). Review: Used this to seal the walls of a concrete panel garage to the concrete base. Was easy to apply and filled the gaps. Quite hard to push into the gaps and then smooth as its very sticky, needs a wet finger to help a bit As proof of use - in the very heavy rain in the UK late September I had standing water outside the garage but the inside was dry so a success - would use again ## Features - One part neutral weatherproofing silicone - Provides excellent adhesion to most exterior substrates - Highly flexible and is tack free in just 30 minutes - Excellent weathering characteristics ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07XWMVKSZ | | Best Sellers Rank | #2,447,728 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #3,776 in Hardware Sealers | | Brand Name | Dowsil | | Color | Grey | | Compatible Material | Wood, Metal, Concrete, Glass, Plastic, Composite Materials, Etc. | | Customer Reviews | 4.6 4.6 out of 5 stars (13) | | EU Spare Part Availability Duration | 1 Years | | Included Components | 791 Silicone Sealant Grey 310ml | | Item Dimensions | 9.02 x 1.89 x 1.89 inches | | Item Form | Liquid | | Item Weight | 0.45 Kilograms | | Manufacturer | Dowsil | | Material Type | Silicone | | Model | DOW4024909 | | Number of Items | 1 | | Part Number | DOW4024909 | | Style Name | Compact | | Supported Standards | RM | | Surface Recommendation | Roof | | Unit Count | 10.4823 Fluid Ounces | | Water Resistance Level | Waterproof | ## Product Details - **Brand:** Dowsil - **Item Weight:** 0.45 Kilograms - **Item dimensions L x W x H:** 9.02 x 1.89 x 1.89 inches - **Material:** Silicone - **Style:** Compact ## Images ![791 Silicone Sealant Grey 310ml - Image 1](https://m.media-amazon.com/images/I/419df9fmBOL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Review *by A***R on March 11, 2026* This is by far the best sealant to seal up bait boat hulls. It dries quick, easy to work with, smooths great with the help of soapy water, its not too thick so you dont have to struggle pumping it out with the gun. Nice rich dark black semi-gloss colour, blend in well with black gloss abs. Good value for money as 1 tube will do most boats that require sealing (microcat/technicat). ### ⭐⭐⭐⭐ Review *by J***W on September 28, 2024* Used this to seal the walls of a concrete panel garage to the concrete base. Was easy to apply and filled the gaps. Quite hard to push into the gaps and then smooth as its very sticky, needs a wet finger to help a bit As proof of use - in the very heavy rain in the UK late September I had standing water outside the garage but the inside was dry so a success - would use again ### ⭐⭐⭐⭐⭐ Review *by M***N on April 7, 2024* Dow, always good and never had a problem with any of their sealers and silicones. I won’t buy any other brand. ## Frequently Bought Together - 791 Silicone Sealant Grey 310ml - Dowsil 791 Sealant Black 310ml - Dowsil 785N Silicone Sealant, White 310ml --- ## 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.co.uk/products/691443984-791-silicone-sealant-grey-310ml](https://www.desertcart.co.uk/products/691443984-791-silicone-sealant-grey-310ml) --- *Product available on Desertcart United Kingdom* *Store origin: GB* *Last updated: 2026-05-18*