---
product_id: 662629012
title: "Stanley S420 Aquarium Silicone Sealant Clear - 12x10.1 Fl. Oz. Fish Tank Safe, Waterproof Bond to Glass, High Elasticity, Non-Toxic Aquarium Sealer for Freshwater & Saltwater | 12 Pack"
brand: "stanley"
price: "734.92 DT"
currency: TND
in_stock: true
reviews_count: 8
category: "Stanley"
url: https://www.desertcart.tn/products/662629012-stanley-s420-aquarium-silicone-sealant-clear-12x10-1-fl-oz
store_origin: TN
region: Tunisia
---

# 100% solventless silicone for ultimate waterproofing Non-toxic formula safe for all aquatic life UV & chemical resistant for long-lasting durability Stanley S420 Aquarium Silicone Sealant Clear - 12x10.1 Fl. Oz. Fish Tank Safe, Waterproof Bond to Glass, High Elasticity, Non-Toxic Aquarium Sealer for Freshwater & Saltwater | 12 Pack

**Brand:** stanley
**Price:** 734.92 DT
**Availability:** ✅ In Stock

## Summary

> 🔧 Seal with confidence, swim with style!

## Quick Answers

- **What is this?** Stanley S420 Aquarium Silicone Sealant Clear - 12x10.1 Fl. Oz. Fish Tank Safe, Waterproof Bond to Glass, High Elasticity, Non-Toxic Aquarium Sealer for Freshwater & Saltwater | 12 Pack by stanley
- **How much does it cost?** 734.92 DT 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/662629012-stanley-s420-aquarium-silicone-sealant-clear-12x10-1-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

- • **Built to Last:** Resistant to water, UV rays, and chemicals for enduring performance.
- • **Aquarium-Grade Safety:** Non-toxic sealant ensures a thriving, healthy aquatic ecosystem.
- • **Rapid Cure Technology:** Fast-setting formula minimizes downtime and speeds up your project.
- • **Unmatched Flexibility:** High elasticity maintains a secure bond despite water pressure and movement.
- • **Versatile Surface Bonding:** Adheres flawlessly to glass, aluminum, and more for multi-purpose use.

## Overview

Stanley S420 Aquarium Silicone Sealant Clear is a 100% solventless, non-toxic, and waterproof sealant designed specifically for freshwater and saltwater aquariums. It offers rapid curing with atmospheric moisture, high elasticity for durable bonds, and resistance to UV and chemicals, making it perfect for glass and aluminum surfaces. This 12-pack cartridge set ensures professional-grade sealing that protects aquatic life while delivering long-lasting performance.

## Description

Stanley S420 Aquarium Silicone Sealant Clear - 12x10.1 Fl. Oz. Fish Tank Safe, Waterproof Bond to Glass, High Elasticity, Non-Toxic Aquarium Sealer for Freshwater & Saltwater | 12 Pack: desertcart.com: Industrial & Scientific

Review: 100% Silicone - Inserts into your own caulking gun. So be sure you have one of those on hand if you are preparing for the worst--an aquarium leak. If it was in a squeeze tube, I think it would be easier for fish keepers to use. Not everyone has a caulking gun or knows where it is when a leak is suddenly occurred and needs immediate attention. This says you can apply it to wet surface, which is helpful for small drip aquarium leak. I do not know why this is "aquarium" when the tube of roof sealant I have in my caulking gun currently is also labeled 100% silicone. This silicone is black. I have not tried it yet. Saving it for the day I need it, if it comes.
Review: Great Product, But Slow Shipping - It took over two months for this Stanley Aquarium Silicone to arrive, which was frustrating. However, once it did, I was really impressed with how well it works. I've used Aqueon silicone in the past, but this one seems to seal even better. Easy to Apply and Reliable: The silicone is easy to work with and provides a strong, waterproof bond to the glass, making it perfect for aquarium repairs or builds. I’ve used it on both freshwater and saltwater setups with no issues at all. Worth the Wait: While the shipping time was a pain, the performance of this silicone makes up for it. It’s become my new go-to for sealing tanks and projects around my sump.

## 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 | B0D6Z9NXG4 |
| Best Sellers Rank | #409,133 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #542 in Silicone Adhesives |
| Brand | STANLEY |
| Brand Name | STANLEY |
| Color | Clear |
| Compatible Material | Glass |
| Customer Reviews | 4.5 out of 5 stars 29 Reviews |
| Included Components | 12 Silicone Sealant Cartridge |
| Item Form | Liquid |
| Manufacturer | StanleyChem |
| Material | Silicone |
| Material Type | Silicone |
| Number of Items | 12 |
| Number of Packs | 12 |
| Part Number | SXSE1092US-AquarSlc |
| Surface Recommendation | Window, Door, Walls |
| UPC | 810125461088 |
| Unit Count | 121.2 Ounce |
| Water Resistance Level | Waterproof |

## Product Details

- **Brand:** STANLEY
- **Item Form:** Liquid
- **Material:** Silicone
- **UPC:** 810125461088
- **Water Resistance Level:** Waterproof

## Images

![Stanley S420 Aquarium Silicone Sealant Clear - 12x10.1 Fl. Oz. Fish Tank Safe, Waterproof Bond to Glass, High Elasticity, Non-Toxic Aquarium Sealer for Freshwater & Saltwater | 12 Pack - Image 1](https://m.media-amazon.com/images/I/711sFSjuWyL.jpg)
![Stanley S420 Aquarium Silicone Sealant Clear - 12x10.1 Fl. Oz. Fish Tank Safe, Waterproof Bond to Glass, High Elasticity, Non-Toxic Aquarium Sealer for Freshwater & Saltwater | 12 Pack - Image 2](https://m.media-amazon.com/images/I/71WkYxoqJLL.jpg)
![Stanley S420 Aquarium Silicone Sealant Clear - 12x10.1 Fl. Oz. Fish Tank Safe, Waterproof Bond to Glass, High Elasticity, Non-Toxic Aquarium Sealer for Freshwater & Saltwater | 12 Pack - Image 3](https://m.media-amazon.com/images/I/71SPEvOBxyL.jpg)
![Stanley S420 Aquarium Silicone Sealant Clear - 12x10.1 Fl. Oz. Fish Tank Safe, Waterproof Bond to Glass, High Elasticity, Non-Toxic Aquarium Sealer for Freshwater & Saltwater | 12 Pack - Image 4](https://m.media-amazon.com/images/I/81T09bsy-yL.jpg)
![Stanley S420 Aquarium Silicone Sealant Clear - 12x10.1 Fl. Oz. Fish Tank Safe, Waterproof Bond to Glass, High Elasticity, Non-Toxic Aquarium Sealer for Freshwater & Saltwater | 12 Pack - Image 5](https://m.media-amazon.com/images/I/812VZyC06jL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ 100% Silicone
*by A***R on August 18, 2024*

Inserts into your own caulking gun. So be sure you have one of those on hand if you are preparing for the worst--an aquarium leak. If it was in a squeeze tube, I think it would be easier for fish keepers to use. Not everyone has a caulking gun or knows where it is when a leak is suddenly occurred and needs immediate attention. This says you can apply it to wet surface, which is helpful for small drip aquarium leak. I do not know why this is "aquarium" when the tube of roof sealant I have in my caulking gun currently is also labeled 100% silicone. This silicone is black. I have not tried it yet. Saving it for the day I need it, if it comes.

### ⭐⭐⭐⭐⭐ Great Product, But Slow Shipping
*by V***8 on September 11, 2024*

It took over two months for this Stanley Aquarium Silicone to arrive, which was frustrating. However, once it did, I was really impressed with how well it works. I've used Aqueon silicone in the past, but this one seems to seal even better. Easy to Apply and Reliable: The silicone is easy to work with and provides a strong, waterproof bond to the glass, making it perfect for aquarium repairs or builds. I’ve used it on both freshwater and saltwater setups with no issues at all. Worth the Wait: While the shipping time was a pain, the performance of this silicone makes up for it. It’s become my new go-to for sealing tanks and projects around my sump.

### ⭐⭐⭐ LONG CURE TIME,EXTRA LONG!!!
*by C***. on September 25, 2025*

You better have Good glasses,the fine print is hard to read. However you should know it says to wait for 3 weeks at least to cure! Come on that's ridiculous. I wouldn't have purchased this and used it had i known. So be aware!!

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---

*Product available on Desertcart Tunisia*
*Store origin: TN*
*Last updated: 2026-09-01*