---
product_id: 79615349
title: "Midwest Hearth Clear Aquarium Silicone Sealant - 10.2 Fluid oz Cartridge"
brand: "asi"
price: "€ 47.29"
currency: EUR
in_stock: true
reviews_count: 5
category: "Asi"
url: https://www.desertcart.ie/products/79615349-midwest-hearth-clear-aquarium-silicone-sealant-10-2-fluid-oz
store_origin: IE
region: Ireland
---

# Waterproof & fish-safe Operates -57°C to +233°C Non-slump, vertical application Midwest Hearth Clear Aquarium Silicone Sealant - 10.2 Fluid oz Cartridge

**Brand:** asi
**Price:** € 47.29
**Availability:** ✅ In Stock

## Summary

> 🐠 Seal the deal with confidence — your aquarium’s best friend!

## Quick Answers

- **What is this?** Midwest Hearth Clear Aquarium Silicone Sealant - 10.2 Fluid oz Cartridge by asi
- **How much does it cost?** € 47.29 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ie](https://www.desertcart.ie/products/79615349-midwest-hearth-clear-aquarium-silicone-sealant-10-2-fluid-oz)

## Best For

- asi enthusiasts

## Why This Product

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

## Key Features

- • **Fish-Safe & Non-Toxic:** Fully cured sealant is safe for both fresh and saltwater fish, protecting your aquatic ecosystem.
- • **Versatile Repair & Build:** Ideal for new aquarium construction or repairing old tanks, giving you peace of mind and durability.
- • **Aquarium-Grade Waterproof Seal:** Ensures leak-proof, long-lasting bonds even under continuous water immersion.
- • **Extreme Temperature Resilience:** Withstands from freezing cold -57°C to scorching 233°C, perfect for any aquatic environment.
- • **Precision Vertical Application:** Non-slump formula lets you seal vertical glass surfaces without sagging or mess.

## Overview

Midwest Hearth Clear Aquarium Silicone Sealant is a premium RTV silicone designed specifically for aquarium glass bonding. It forms strong, waterproof, and fish-safe seals that endure extreme temperatures and continuous water exposure. Its non-slump formula allows precise application on vertical surfaces, making it perfect for both building and repairing fresh or saltwater tanks. Fully cures in 10 days to a durable, non-toxic finish that protects your aquatic life.

## Description

APPLICATION1. Glass must be properly prepared as described.2. Apply the aquarium sealant to edge surface of the glass to be joined to the non-edge surface. After application of the sealant, the assembled glass components should be tightly placed in a fixture or jig to allow sealant to flow evenly between joined surfaces and to give support during the internal sealing of the aquarium.3. Selected bead size appropriate for the size of aquarium being constructed. Apply the sealant into the center of the joint formed by the sections of glass. Tool the sealant immediately after application. Any excess sealant should be removed before the sealant is cured by suing a clean cloth and a suitable solvent such as MEK (methyl ethyl Ketone), TCE (trichlorethylene) or alcohol.Cured sealant can be trimmed with sharp blade. Allow sealant to cure at least 7 to 10 days before adding water and fish. This will ensure full cure and will allow the curing agent to totally dissipate.REPAIR APPLICATIONThe ASI Aquarium Silicone Sealant can be used to repair old or damaged aquariums.1. Remove all of the damaged sealant, clean area to be repaired with a clean cloth and a suitable solvent. Apply sealant as described above and tool.2. Check repaired aquarium for leaks before adding fish to tank. Fill aquarium with water and let sit for several days and check for any signs or leakage.

Review: Good quality - Seems great it skins up nicely allowing time to work
Review: Vale lo que cuesta - la verdad al inicio se me hizo caro pero ya probandolo me encantó y me sentir que valió cada peso. Me ayudó a pegar el fondo 3D y pequeños espacios que tenía en la pecera.

## Features

- Suspected of damaging fertility or the unborn child.
- This high modulus component RTV Silicone Sealant forms strong cohesive bonds to glass without the need of primers
- The bonds are unaffected by continuous immersion in water and, when fully cured, is non-toxic to fish.
- ASI Aquarium Silicone Sealant is a non-slump sealant and can be applied to vertical surfaces without flowing or sagging.
- Can be applied to surface temperatures from -18°C to +50°C (0°F to +120°F) and after curing, withstands constant operating temperatures from -57°C to +233°C (-70° F to 450°F).
- Formulated for use with fresh and salt-water aquariums or a Vivarium

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00EZB1QQ2 |
| Best Sellers Rank | 669,074 in DIY & Tools ( See Top 100 in DIY & Tools ) 5,656 in Sealers |
| Brand | ASI |
| Colour | Multicolored |
| Customer Reviews | 4.7 out of 5 stars 2,753 Reviews |
| Full Cure Time | 10 Days |
| Full cure time | 10 Days |
| Initial Hardening Time | 7 Days |
| Initial hardening time | 7 Days |
| Item Form | Liquid |
| Item Weight | 10.2 Ounces |
| Item weight | 10.2 Ounces |
| Liquid Volume | 10.2 Fluid Ounces |
| Liquid volume | 10.2 Fluid Ounces |
| Manufacturer | ASI |
| Material | Silicone |
| Surface Recommendation | Glass |
| UPC | 802455893066 |
| Unit Count | 301.65 millilitre |
| Water Resistance Level | Waterproof |

## Product Details

- **Colour:** Multicolored
- **Brand:** ASI
- **Item weight:** 10.2 Ounces
- **Liquid volume:** 10.2 Fluid Ounces
- **Full cure time:** 10 Days

## Images

![Midwest Hearth Clear Aquarium Silicone Sealant - 10.2 Fluid oz Cartridge - Image 1](https://m.media-amazon.com/images/I/51xaY6pTisS.jpg)

## Questions & Answers

**Q: Will it fix a leaky plexiglass tank?**
A: 100% silicone is for use on glass and not recommended for long term adhesion on acrylics, plexiglass, plastics since they contain petroleum products which will cause the silicone to peel off in time.  (MAY be fine for short-term use.)  There are special adhesives/sealants for use with acrylics and plastics and they will be labeled as such.  Plexiglass, specifically, needs an adhesive method that actually "melts" the plexiglass, which then creates the bond.  100% silicone adhesives/sealants will not do that.

**Q: Could this be used safely as a gasket around my filter screen at the bottom of dishwasher used to block food particles around edge of screen filter?**
A: I’m no expert but as it is silicone and it is safe for aquariums once cured, it should be safe for a dishwasher.

**Q: Will salt water eat sealant**
A: In general silicon sealants will handle salt water.  I used this particular sealant for a fresh water tank, but I have used silicon sealants on my salt water sail boat without an issue.  The main problem with all sealants is you need a clean, oil free, and dry surface for the sealant can properly attach to the surface.  You need a humid, but not wet environment for the sealant to cure.  I suggest placing a well dampened cloth in the bottom of the tank.  You don't want water on the sealant, but you need moisture in the air.

**Q: After applying the silicone, approximately how many minutes do you have before taking the tape off?**
A: if you mean using masking tape to keep the glue off an area, i would pull it off when it is still wet,
and probably wouldnt wait more than 15 minutes to do so. Remember you can spritz the silicone with water to help it cure faster and better.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Good quality
*by P***E on 17 October 2025*

Seems great it skins up nicely allowing time to work

### ⭐⭐⭐⭐⭐ Vale lo que cuesta
*by M***. on 26 February 2024*

la verdad al inicio se me hizo caro pero ya probandolo me encantó y me sentir que valió cada peso. Me ayudó a pegar el fondo 3D y pequeños espacios que tenía en la pecera.

### ⭐⭐⭐⭐⭐ Exactly as advertised
*by C***S on 1 December 2025*

Worked well for resealing an old 10 gallon aquarium. Easy to work with, but make sure you use in a very well ventilated area or use a mask/safety glasses because the fumes can be strong.

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*Product available on Desertcart Ireland*
*Store origin: IE*
*Last updated: 2026-03-10*