---
product_id: 725604774
title: "Wacker 121 Professional Aquarium, Fish Tank Silicone Sealant | Small to Large Tanks | Bonding, Gap Filling & Repair | Safe for Fish - FDA Approved (310ml - Clear)"
brand: "wacker"
price: "334641₫"
currency: VND
in_stock: false
reviews_count: 5
url: https://www.desertcart.vn/products/725604774-wacker-121-professional-aquarium-fish-tank-silicone-sealant-small-to
store_origin: VN
region: Vietnam
---

# Long-term waterproof seal Fast curing speed High strength & toughness Wacker 121 Professional Aquarium, Fish Tank Silicone Sealant | Small to Large Tanks | Bonding, Gap Filling & Repair | Safe for Fish - FDA Approved (310ml - Clear)

**Brand:** wacker
**Price:** 334641₫
**Availability:** ❌ Out of Stock

## Summary

> 🐠 Seal the deal with Wacker 121 — where strength meets fish-friendly finesse!

## Quick Answers

- **What is this?** Wacker 121 Professional Aquarium, Fish Tank Silicone Sealant | Small to Large Tanks | Bonding, Gap Filling & Repair | Safe for Fish - FDA Approved (310ml - Clear) by wacker
- **How much does it cost?** 334641₫ with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.vn](https://www.desertcart.vn/products/725604774-wacker-121-professional-aquarium-fish-tank-silicone-sealant-small-to)

## Best For

- wacker enthusiasts

## Why This Product

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

## Key Features

- • **Rapid Cure Time:** Get your tank ready faster with quick-setting, high-viscosity sealant.
- • **Versatile Application:** Perfect for glass, plastics, ceramics, and more—small or large tanks, no limits.
- • **Odorless & Eco-Friendly:** Enjoy a clean, odor-free application that’s safe for you and the environment.
- • **Fish-Safe & FDA Approved:** 100% toxin-free formula ensuring a safe habitat for your aquatic life.
- • **Unmatched Aquarium Bonding:** Premium German silicone engineered for durable, leak-proof tank construction.

## Overview

Wacker 121 Professional Aquarium Sealant is a premium, FDA-approved silicone designed in Germany for strong, waterproof bonding and gap filling in aquarium tanks of all sizes. Its fast curing, high toughness, and odorless formula ensure safe, durable repairs and construction, compatible with glass, plastics, and ceramics, making it the go-to sealant for aquatic professionals and enthusiasts alike.

## Description

Wacker 121 Professional Aquarium, Fish Tank Silicone Sealant | Small to Large Tanks | Bonding, Gap Filling & Repair | Safe for Fish - FDA Approved (310ml - Clear) : desertcart.co.uk: Pet Supplies

Review: Super & Excellent quality Silicon sealant for aquarium 👍🏻
Review: Works well

## Features

- Safety data sheet available on request.
- ✔️ PREMIUM GRADE ---> Made in Germany, Wacker 121 is a high performance silicone sealant designed for strong Bonding, Gap Filling & Repair of aquarium tanks, fish tanks and other glazing applications. Suitable for small to large size tank construction.
- ✔️ FDA APPROVED ---> FDA approved for fish and other aquatic animals. No toxins in it, safe and fish friendly.
- ✔️ FEATURES & BENEFITS ---> Excellent Long-term water resistance *★* Suitable for glass, plastics, ceramic products, and more *★* High strength, high toughness, high viscosity *★* Fast curing speed *★* Suitable for objects under water pressure *★* Excellent mechanical properties *★* Usage for wide variety of Glazing & Industrial applications
- ✔️ ENVIRONMENTAL ✔️ ODORLESS ✔️ WATERPROOF ✔️ HIGH-QUALITY

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B08KGVHJJ8 |
| Brand | Wacker |
| Colour | Clear/Transparent |
| Compatible Material | Ceramic |
| Customer Reviews | 4.3 out of 5 stars 377 Reviews |
| Item Form | Paste |
| Item Package Quantity | 1 |
| Item Volume | 310 Millilitres |
| Item Weight | 420 Grams |
| Item form | Paste |
| Item package quantity | 1 |
| Item volume | 310 Millilitres |
| Manufacturer | Wacker |
| Manufacturer Part Number | WCK121 |
| Model Number | WCK121 |
| Unit Count | 310.0 millilitre |
| Water Resistance Level | Waterproof |
| Water resistance level | Waterproof |

## Product Details

- **Brand:** Wacker
- **Colour:** Clear/Transparent
- **Item form:** Paste
- **Item package quantity:** 1
- **Item volume:** 310 Millilitres

## Images

![Wacker 121 Professional Aquarium, Fish Tank Silicone Sealant | Small to Large Tanks | Bonding, Gap Filling & Repair | Safe for Fish - FDA Approved (310ml - Clear) - Image 1](https://m.media-amazon.com/images/I/410-A9QCDCL.jpg)
![Wacker 121 Professional Aquarium, Fish Tank Silicone Sealant | Small to Large Tanks | Bonding, Gap Filling & Repair | Safe for Fish - FDA Approved (310ml - Clear) - Image 2](https://m.media-amazon.com/images/I/51-7mLb8NQL.jpg)
![Wacker 121 Professional Aquarium, Fish Tank Silicone Sealant | Small to Large Tanks | Bonding, Gap Filling & Repair | Safe for Fish - FDA Approved (310ml - Clear) - Image 3](https://m.media-amazon.com/images/I/613gvPZhUCL.jpg)
![Wacker 121 Professional Aquarium, Fish Tank Silicone Sealant | Small to Large Tanks | Bonding, Gap Filling & Repair | Safe for Fish - FDA Approved (310ml - Clear) - Image 4](https://m.media-amazon.com/images/I/618rQczFfsL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Super & Excellent quality Silicon sealant for aquarium 👍🏻
*by A***N on 27 March 2026*



### ⭐⭐⭐⭐⭐ Works well
*by P***R on 15 March 2026*



### ⭐⭐⭐⭐ Good quality
*by H***H on 31 January 2026*



## Frequently Bought Together

- Wacker 121 Professional Aquarium, Fish Tank Silicone Sealant | Small to Large Tanks | Bonding, Gap Filling & Repair | Safe for Fish (310ml - Clear)
- BIONIX Freshwater Master Test Kit (200 Test).

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**Shop now:** [https://www.desertcart.vn/products/725604774-wacker-121-professional-aquarium-fish-tank-silicone-sealant-small-to](https://www.desertcart.vn/products/725604774-wacker-121-professional-aquarium-fish-tank-silicone-sealant-small-to)

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*Product available on Desertcart Vietnam*
*Store origin: VN*
*Last updated: 2026-05-19*