--- product_id: 643944473 title: "Stanley S420 Aquarium Silicone Sealant Clear - 2x10.1 Fl. Oz. Fish Tank Safe, Waterproof Bond to Glass, High Elasticity, Non-Toxic Aquarium Sealer for Freshwater & Saltwater | 1 Pack" brand: "stanley" price: "$59.66" currency: USD in_stock: true category: "Stanley" url: https://www.desertcart.us/products/643944473-stanley-s420-aquarium-silicone-sealant-clear-2x10-1-fl-oz store_origin: US region: United States of America --- # Non-toxic formula safe for all aquatic life 100% solventless silicone for ultimate waterproofing UV & chemical resistant for long-lasting durability Stanley S420 Aquarium Silicone Sealant Clear - 2x10.1 Fl. Oz. Fish Tank Safe, Waterproof Bond to Glass, High Elasticity, Non-Toxic Aquarium Sealer for Freshwater & Saltwater | 1 Pack **Brand:** stanley **Price:** $59.66 **Availability:** βœ… In Stock ## Summary > 🐟 Seal your underwater world with confidence and style! ## Quick Answers - **What is this?** Stanley S420 Aquarium Silicone Sealant Clear - 2x10.1 Fl. Oz. Fish Tank Safe, Waterproof Bond to Glass, High Elasticity, Non-Toxic Aquarium Sealer for Freshwater & Saltwater | 1 Pack by stanley - **How much does it cost?** $59.66 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/643944473-stanley-s420-aquarium-silicone-sealant-clear-2x10-1-fl-oz) ## Best For - stanley enthusiasts ## Why This Product - Trusted stanley brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - β€’ **Aquarium-Grade Safety:** Non-toxic and fish-friendly sealant ensures a thriving aquatic ecosystem. - β€’ **Multi-Surface Mastery:** Bonds seamlessly to glass, aluminum, and more for versatile aquarium and display repairs. - β€’ **Rapid Cure Technology:** Fast-setting formula reduces downtime and speeds up your aquarium projects. - β€’ **Unmatched Flexibility:** High elasticity maintains a secure, crack-free bond under water pressure. - β€’ **All-Weather Durability:** Resistant to water, UV rays, and chemicals for lasting performance indoors or outdoors. ## Overview Stanley S420 Aquarium Silicone Sealant is a premium, 100% solventless, clear silicone designed specifically for aquarium construction and repair. Its non-toxic, fish-safe formula ensures a healthy environment for freshwater and saltwater life, while its rapid curing and high elasticity provide a durable, waterproof, and UV-resistant seal that lasts. Perfect for glass and aluminum surfaces, this sealant is the trusted choice for professionals and hobbyists alike. ## Description Stanley S420 Specialty Aquarium Silicone is a premium, one-component, high-quality acetoxy curing silicone sealant designed for fish tank and aquarium construction. Offering a flexible, durable, and watertight seal, this silicone ensures a safe aquatic environment due to its non-toxic and solvent-free formulation, making it ideal for both fresh and saltwater applications. ## Features - 100% Solventless Silicone - This sealant is formulated from 100% solventless silicone, ensuring a robust and durable seal that maintains flexibility over time. It’s perfect for aquariums, providing a secure and reliable bond that withstands the pressures of underwater environments and various conditions without degradation. - Non-Toxic to Fish and Plants - Specifically designed to be safe for all aquatic life, this silicone sealant is non-toxic, making it ideal for use in both freshwater and saltwater aquariums. It ensures that fish, plants, and other aquatic organisms remain healthy and unaffected by the sealant, promoting a thriving ecosystem. - Resistant to Water, UV and Chemicals - Engineered to resist water, ultraviolet light, and many chemicals, this sealant delivers exceptional longevity and performance. It remains effective in various environmental conditions, including continuous underwater use and exposure to harsh sunlight, without losing its adhesive properties or flexibility. - Rapid Curing with Atmospheric Moisture - This one-component sealant cures quickly upon exposure to atmospheric moisture, providing a fast and efficient bonding solution. Its rapid curing process ensures that the sealant sets quickly, allowing for immediate use and minimal downtime in both construction and repair projects - Versatile Application for Various Surfaces - This versatile silicone sealant is suitable for a wide range of applications, including the construction and repair of aquariums, glazing on aluminum frames, shop displays, and sealing windows and doors. It adheres well to glass, aluminum, and many other surfaces, making it an essential tool for various sealing needs. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0H2FY1Y4T | | Best Sellers Rank | #149,803 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #274 in Silicone Adhesives | | Brand Name | STANLEY | | Color | Clear | | Container Type | Cartridge | | Customer Reviews | 4.5 4.5 out of 5 stars (32) | | Included Components | 2 Silicone Sealant Cartridge | | Manufacturer | StanleyChem | | Material Type | 100% Silicone | | Part Number | SXSE1093US | | UPC | 810125467264 | | Unit Count | 20.2 Ounce | ## Product Details - **Brand:** STANLEY - **Color:** Clear - **Material:** 100% Silicone - **Package Information:** Cartridge - **Unit Count:** 20.2 Ounce ## Images ![Stanley S420 Aquarium Silicone Sealant Clear - 2x10.1 Fl. Oz. Fish Tank Safe, Waterproof Bond to Glass, High Elasticity, Non-Toxic Aquarium Sealer for Freshwater & Saltwater | 1 Pack - Image 1](https://m.media-amazon.com/images/I/713lSWvybtL.jpg) ![Stanley S420 Aquarium Silicone Sealant Clear - 2x10.1 Fl. Oz. Fish Tank Safe, Waterproof Bond to Glass, High Elasticity, Non-Toxic Aquarium Sealer for Freshwater & Saltwater | 1 Pack - Image 2](https://m.media-amazon.com/images/I/71WkYxoqJLL.jpg) ![Stanley S420 Aquarium Silicone Sealant Clear - 2x10.1 Fl. Oz. Fish Tank Safe, Waterproof Bond to Glass, High Elasticity, Non-Toxic Aquarium Sealer for Freshwater & Saltwater | 1 Pack - Image 3](https://m.media-amazon.com/images/I/71SPEvOBxyL.jpg) ![Stanley S420 Aquarium Silicone Sealant Clear - 2x10.1 Fl. Oz. Fish Tank Safe, Waterproof Bond to Glass, High Elasticity, Non-Toxic Aquarium Sealer for Freshwater & Saltwater | 1 Pack - Image 4](https://m.media-amazon.com/images/I/81T09bsy-yL.jpg) ![Stanley S420 Aquarium Silicone Sealant Clear - 2x10.1 Fl. Oz. Fish Tank Safe, Waterproof Bond to Glass, High Elasticity, Non-Toxic Aquarium Sealer for Freshwater & Saltwater | 1 Pack - Image 5](https://m.media-amazon.com/images/I/812VZyC06jL.jpg) ## Available Options This product comes in different **Color, Size** options. ## Frequently Bought Together - Stanley Aquarium Silicone Sealant Clear - 2x10.1 Fl. Oz. Fish Tank Safe, Waterproof Bond to Glass, High Elasticity, Non-Toxic Aquarium Sealer for Freshwater & Saltwater | 1 Pack. - GREAT STUFF 99112849 Smart Dispenser Pond & Stone, 12 oz, Black --- ## Why Shop on Desertcart? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.us/products/643944473-stanley-s420-aquarium-silicone-sealant-clear-2x10-1-fl-oz](https://www.desertcart.us/products/643944473-stanley-s420-aquarium-silicone-sealant-clear-2x10-1-fl-oz) --- *Product available on Desertcart United States of America* *Store origin: US* *Last updated: 2026-07-10*