---
product_id: 50284065
title: "BOND IT BLACK HA6 RTV Silicone Sealant Marine Aquarium Safe Water Fish Tank Adhesive"
brand: "truly pvc supplies"
price: "€ 22.83"
currency: EUR
in_stock: true
reviews_count: 8
category: "Truly Pvc Supplies"
url: https://www.desertcart.sk/products/50284065-bond-it-black-ha6-rtv-silicone-sealant-marine-aquarium-safe
store_origin: SK
region: Slovakia
---

# Marine & freshwater safe Handles extreme temperatures UV & ozone resistant BOND IT BLACK HA6 RTV Silicone Sealant Marine Aquarium Safe Water Fish Tank Adhesive

**Brand:** truly pvc supplies
**Price:** € 22.83
**Availability:** ✅ In Stock

## Summary

> 🖤 Seal with confidence, bond with brilliance!

## Quick Answers

- **What is this?** BOND IT BLACK HA6 RTV Silicone Sealant Marine Aquarium Safe Water Fish Tank Adhesive by truly pvc supplies
- **How much does it cost?** € 22.83 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sk](https://www.desertcart.sk/products/50284065-bond-it-black-ha6-rtv-silicone-sealant-marine-aquarium-safe)

## Best For

- truly pvc supplies enthusiasts

## Why This Product

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

## Key Features

- • **Eco-Safe Formula:** No leaching fungicides or oils—safe for fish, plants, and your peace of mind.
- • **UV & Ozone Immunity:** Maintains integrity and appearance even under relentless sun exposure and environmental stress.
- • **High Modulus Strength:** Rigid, non-slumping sealant that guarantees long-lasting, watertight bonds on glass, metal, and plastics.
- • **Aquarium-Grade Durability:** Perfectly safe for marine and freshwater tanks, ensuring your aquatic friends thrive without compromise.
- • **Extreme Temperature Resilience:** Withstands harsh weather and water temperature swings without cracking or shrinking.

## Overview

Bond It Black HA6 RTV Silicone Sealant is a premium, marine-grade adhesive designed for aquariums and demanding engineering applications. It offers high modulus rigidity, UV and ozone resistance, and is safe for both freshwater and marine environments. Its waterproof, non-shrinking formula bonds glass, ceramics, metals, and plastics, making it the go-to sealant for professionals who demand durability and eco-safety.

## Description

1 x Black HA6 Silicone SealantHA6 is a premium, high modulus, non-shrinking, marine quality silicone sealant and adhesive - ideal for home aquariums, fresh water and marine fish tanks and vivariums. It also has many engineering applications providing flexible watertight seals around joints and gaskets. We use it in the conservatory industry to seal glass polycarbonate sheets.Conforms to BS5889:B and ISO 11600-G-20HM.What makes HA6 Marine Silicone so special? HA6 can be used with the following materials & conditions.* Glass* Ceramics* Anodised Aluminium* Primed Metals* Plastics* Salt water* Extreme temperaturesHA6 Marine Silicone Applications* Aquariums - bonding, bedding & sealing * Pumps and pipework - gaskets and seals* Curtain walls* Cladding & beddingFeatures & Benefits* Marine grade silicone - unaffected by salt water* No leaching fungicides or oils* Non-Shrinking* Handles extreme temperatures* Unaffected by UV and Ozone* Marine & freshwater aquarium safe* High modulus - more rigidityNote:- Not suitable for use on bitumen, asphalt, natural stone or unprimed metals. Not suitable for use as a mirror adhesive. Do not apply at temperatures below 5°C or above 30°.

Review: Great product. - Bought it many times and never let me down. Used for bathroom and in fish tanks- works well in both.
Review: Blends in well with the colour of the liner. - Bought this product to repair and build up I order to raise pond water levels, it adheres very well also you can smooth out to blend in nice product for quick repairs. Have bought another tube as stock. It’s also user friendly if you have fish. I left the repair 24 hrs before topping up with water also the finish is a flexible rubber feel so moves with temperature of the weather and water won’t split ,

## Features

- Causes serious eye damage.
- Causes skin irritation.
- Marine and freshwater aquarium safe
- Unaffected by UV and ozone
- High modulus sealant - so more rigid
- Handles extreme temperatures and is non-slumping
- No leaching fungicides or oils

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B005Z110TY |
| Best Sellers Rank | 28,702 in DIY & Tools ( See Top 100 in DIY & Tools ) 41 in Caulk |
| Brand | Truly PVC Supplies |
| Colour | Black |
| Compatible Material | Glass, Ceramics, Metal, Plastic |
| Container Type | Cartridge |
| Customer Reviews | 4.7 out of 5 stars 1,750 Reviews |
| Full Cure Time | 7 Days |
| Item Form | Liquid |
| Item Package Quantity | 1 |
| Item Volume | 310 Millilitres |
| Item form | Liquid |
| Manufacturer | Bond-It |
| Material | Silicone |
| Model Number | BDHA6 |
| Other Special Features of the Product | Waterproof |
| Special feature | Waterproof |
| Specific Uses For Product | Lace |
| Specific uses for product | Lace |
| UPC | 790295998648 |
| Unit Count | 310.0 millilitre |
| Viscosity | High Viscosity |
| Water Resistance Level | Waterproof |

## Product Details

- **Brand:** Truly PVC Supplies
- **Item form:** Liquid
- **Material:** Silicone
- **Special feature:** Waterproof
- **Specific uses for product:** Lace

## Images

![BOND IT BLACK HA6 RTV Silicone Sealant Marine Aquarium Safe Water Fish Tank Adhesive - Image 1](https://m.media-amazon.com/images/I/71RXMNw569L.jpg)

## Questions & Answers

**Q: Would this be suitable for joining two rubber pond liners together?**
A: Dear JSG,  thank you for your question.  I am afraid this is not suitable for joining pond liners; please do not hesitate to contact us for further information.  Kind regards JC Plastics Ltd.

**Q: Is this 100% silicone ?**
A: It says it  is i would get  the  clear one 100% silicone  hope that  helps

**Q: Dose the silicone come with a lid to prevent drying of excess?**
A: Sadly no. Once you’ve cut a hole for it to come out, that’s it, but I just put a plastic glove over with an elastic band to hold it in place.

**Q: Has anyone used this to glue aquarium ornaments together? Have tried sealent which didnt work.**
A: This stuff is excellent and will definitely do the job

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great product.
*by M***6 on 23 October 2025*

Bought it many times and never let me down. Used for bathroom and in fish tanks- works well in both.

### ⭐⭐⭐⭐⭐ Blends in well with the colour of the liner.
*by P***7 on 24 May 2022*

Bought this product to repair and build up I order to raise pond water levels, it adheres very well also you can smooth out to blend in nice product for quick repairs. Have bought another tube as stock. It’s also user friendly if you have fish. I left the repair 24 hrs before topping up with water also the finish is a flexible rubber feel so moves with temperature of the weather and water won’t split ,

### ⭐⭐⭐⭐ Easy to use, and non-toxic!
*by O***E on 25 February 2024*

Great item for the price. It is suitable for many areas including aquariums. As others have mentioned use in a well ventilated room/ take regular breaks between applications etc. I found it easily dispenses from the tube, and spreads nicely (not to dense- easy to work with) I have personally found it is rather greasy in texture not a problem but note that for area of work/ hands. Although found it easier to clean up than other sealants. Would recommend highly, but would say tube is limited on information, such as dry time is not on the label. So some research is required but seemingly 48hrs for full cure is the universal advice for areas deeper than 2mm.

## Frequently Bought Together

- Bond-It HA6 Black Marine Adhesive Premium Silicone Sealant - EU3 310ml Cartridge - Suitable for marine salt or fresh water aquariums, fish tanks, vivariums, gaskets, joints and seals etc. on conservatories, glass, ceramics, aluminium, metals, plastics & extreme temperatures.
- BOND IT CLEAR HA6 RTV Silicone Sealant Marine Aquarium Safe Water Fish Tank Adhesive
- ProDec MG11ES Extra Strong Skeleton Caulking Gun, Sealants, Silicones, Adhesives - Professional Heavy Duty Applicator Suitable for High Viscosity Products,Red,400ml and 310ml

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**Shop now:** [https://www.desertcart.sk/products/50284065-bond-it-black-ha6-rtv-silicone-sealant-marine-aquarium-safe](https://www.desertcart.sk/products/50284065-bond-it-black-ha6-rtv-silicone-sealant-marine-aquarium-safe)

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*Product available on Desertcart Slovakia*
*Store origin: SK*
*Last updated: 2026-02-01*