--- product_id: 392705817 title: "Hi-Gear HG9048s Insta-Seal Permanent Block Sealer - 8 fl. oz." brand: "hi-gear" price: "FREE" currency: TND in_stock: true url: https://www.desertcart.tn/products/392705817-hi-gear-hg9048s-insta-seal-permanent-block-sealer-8-fl store_origin: TN region: Tunisia --- # 8 fl. oz. capacity Compatible with all antifreeze Repairs all leaks Hi-Gear HG9048s Insta-Seal Permanent Block Sealer - 8 fl. oz. **Brand:** hi-gear **Price:** FREE **Availability:** ✅ In Stock ## Summary > 🔒 Seal it, don’t stress it! ## Quick Answers - **What is this?** Hi-Gear HG9048s Insta-Seal Permanent Block Sealer - 8 fl. oz. by hi-gear - **How much does it cost?** FREE with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/392705817-hi-gear-hg9048s-insta-seal-permanent-block-sealer-8-fl) ## Best For - hi-gear enthusiasts ## Why This Product - Trusted hi-gear brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Seal the Deal:** Permanently repairs leaks in gaskets, radiators, and more! - • **Versatile Fix:** Works on plastic, aluminum, and cast iron—your all-in-one solution! - • **No Drain, No Pain:** Compatible with all antifreeze types—no draining required! - • **Warranty Friendly:** Rest easy—this won't void your manufacturer's warranty! - • **Advanced Technology:** Ceramic micro-fibers and copper create a strong, lasting bond! ## Overview The Hi-Gear HG9048s Insta-Seal Permanent Block Sealer is an 8 fl. oz. solution designed to permanently repair leaks in various automotive components, including gaskets, radiators, and intake manifolds. Its advanced formula is compatible with all antifreeze types and does not require draining, making it a versatile and warranty-friendly choice for car maintenance. ## Description Hi-Gear products' cooling system additives have set a new standard for quality and performance in the automotive industry. As new technology evolves and is introduced by original equipment manufacturers, the product that maintain and treat equipment need to evolve as well. Hi-Gear Products' research and development experts are constantly upgrading formulations and offering new and innovative products. Shop technicians and consumers rely on Hi-Gear Insta-Seal. Insta-Seal seeks out the low pressure area formed by cracks and holes and deposits the ceramic micro-fibers and copper as it flows through the crack. Within seconds the crack or hole is completely filled and the seal is complete. Engine heat further welds the seal so that it will last the life of the engine. Insta-Seal fixes both large and small leaks in plastic, aluminum and cast iron intakes, heads, blocks and radiators. Safely use Insta-Seal with all types of antifreeze including conventional green or blue (silicate-based) and extended life red/orange or yellow (OAT/HOAT) coolants. Insta-Seal will not harm the cooling system when used properly. Insta-Seal quickly and effectively seals leaks in gasoline and diesel cars, trucks, vans, SUVs and RVs. Compatible with all types of glycol-based coolants. ## Features - Permanently repairs leaks in gaskets, radiators, heater cores, intake manifolds, blocks, heads and freeze plugs - Compatible with all types of antifreeze and no draining required - Insta-Seal fixes both large and small leaks in plastic, aluminum and cast iron intakes, heads, blocks and radiators - Insta-Seal will not void the manufacturer's warranty - Ceramic micro-fibers, copper and heat combine to "weld" both large and small cracks ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B005VXFBIC | | Best Sellers Rank | #1,968,467 in Automotive ( See Top 100 in Automotive ) #397 in Gasket Sealers #14,300 in Oils & Fluids | | Brand Name | Hi-Gear | | Compatible Material | Aluminum, Ceramic, Copper, Plastic | | Customer Reviews | 3.7 3.7 out of 5 stars (136) | | Global Trade Identification Number | 00009603190484 | | Included Components | Insta-Seal® Permanent Block & Radiator Seal 8 fl. oz (236 ml) | | Item Dimensions | 2.25 x 2.25 x 7.13 inches | | Item Form | Liquid | | Item Type Name | automotive-radiator-conditioners | | Item Weight | 9.6 ounces | | Manufacturer | Hi-Gear Products, Inc. | | Material Type | Plastic | | Model | HG9048s | | Number of Items | 1 | | Part Number | HG9048S | | Style Name | Liquid ceramic-microfiber and copper sealant | | UPC | 009603190484 | | Unit Count | 1 Count | | Water Resistance Level | Water Resistant | ## Product Details - **Material:** Plastic - **Brand:** HI-GEAR - **Style:** Liquid ceramic-microfiber and copper sealant - **Item weight:** 0.6 Pounds - **Item dimensions L x W x H:** 5.7 x 5.7 x 18.1 centimeters ## Images ![Hi-Gear HG9048s Insta-Seal Permanent Block Sealer - 8 fl. oz. - Image 1](https://m.media-amazon.com/images/I/51xvmpfhAPL.jpg) ![Hi-Gear HG9048s Insta-Seal Permanent Block Sealer - 8 fl. oz. - Image 2](https://m.media-amazon.com/images/I/61vhsxqk5oL.jpg) ![Hi-Gear HG9048s Insta-Seal Permanent Block Sealer - 8 fl. oz. - Image 3](https://m.media-amazon.com/images/I/6110UmCEutL.jpg) ![Hi-Gear HG9048s Insta-Seal Permanent Block Sealer - 8 fl. oz. - Image 4](https://m.media-amazon.com/images/I/61Ch3Uf0JwL.jpg) ![Hi-Gear HG9048s Insta-Seal Permanent Block Sealer - 8 fl. oz. - Image 5](https://m.media-amazon.com/images/I/71vt8GMTHDL.jpg) ## Questions & Answers **Q: After you use it you have to change the motor oil my oil look like milk ?** A: A water cooling system leak into the interior of the engine mixing with the oil lubricating system produces a yellowish off white foam. Either a cracked block or head or a leaking head gasket are the usual suspect for this. I even have had a badly leaking cooling tube under the intake manifold on a 4.6 Liter Ford that no coolant leak additive could fix--a removal of intake manifold and replacement of tube was the only fix. It is very common for Aluminum head/block warpage due to even a one time overheating to cause head gasket leakage that only engine teardown and having the warp leveled can fix. For reasonably small leaks, I have used radiator sealer to stop them. **Q: Do you have to flush the radiator first?** A: Yes, I would flush it first, then add the installation seal. **Q: Does it says for how many cylinders it will work per .oz used** A: Didn't work on 6 cylinder for me. **Q: Will this work on a cracked block and water cooled manifold in a closed Mercruiser 5.7 liter V8 boat engine? Thanks.** A: It depends on how big the crack is. If very big probely not. My experience with with water manifold not likely. ## Frequently Bought Together - Hi-Gear HG9048s Insta-Seal Permanent Block Sealer - 8 fl. oz. - K-Seal ST5501 Multi-Purpose One Step Permanent Coolant Leak Repair, 8oz, Pour and Go, Mixes with All Antifreeze, No Flushing Required - K-Seal ST3501 Pour and Go Head Gasket Sealer, 16oz, Permanent Repair for Blown Head Gaskets, Cracked Heads and Blocks --- ## 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.tn/products/392705817-hi-gear-hg9048s-insta-seal-permanent-block-sealer-8-fl](https://www.desertcart.tn/products/392705817-hi-gear-hg9048s-insta-seal-permanent-block-sealer-8-fl) --- *Product available on Desertcart Tunisia* *Store origin: TN* *Last updated: 2026-08-23*