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Clear Aquarium Sealant - High Strength Waterproof Adhesive for DIY Fish Tank Making, Glass Repair, and Bathroom Caulking (Fast Curing)
Hot Selling Gp Acetic Silicone Sealant for Aquariums, Fish Tanks, Glass, Windows, Doors, Kitchen and Bathroom Waterproof Sealing
100% AQUARIUM SAFE & NON-TOXIC: Specially formulated to cure to a fish-safe, non-toxic seal. Once fully cured, it creates a waterproof barrier that is safe for freshwater and saltwater fish, plants, and corals. No harmful additives.
SUPER STRONG ADHESION & FLEXIBILITY: This acetic silicone sealant provides a powerful, permanent bond on glass, acrylic, and other surfaces. It remains flexible after curing, effectively resisting vibrations and movement without cracking or leaking.
PERFECT WATERPROOF SEAL: Creates an enduring, 100% waterproof barrier. Ideal for constructing or repairing aquariums, fish tanks, terrariums, and sealing around bathtubs, sinks, windows, and in kitchens.
FAST SKINNING & CURING: Forms a surface skin within 15-30 minutes. Full cure through depth is achieved in 24 hours (depending on temperature and humidity), allowing for quicker project completion.
EXCELLENT UV & MILDEW RESISTANCE: Resists yellowing from sunlight exposure and prevents the growth of black mold and mildew, making it perfect for humid environments like bathrooms and, of course, aquariums.
MULTI-PURPOSE USE: Beyond aquariums, it's the perfect adhesive sealant for countless indoor household projects: sealing windows, doors, mirrors, gutters, plumbing fixtures, and automotive glass.
Build with Confidence, Keep Your Aquatic Friends Safe!
Are you building a custom aquarium or desperately fixing a leaky fish tank? The biggest worry is always: "Is this sealant SAFE for my fish?" Your search ends here. Our Professional Acetic Silicone Sealant is engineered specifically for aquatic life and delivers a superior, crystal-clear, and incredibly strong waterproof seal. Trusted by DIY enthusiasts and professional aquarists worldwide, it's the reliable solution for creating a secure underwater world.
Why Choose Our Acetic Silicone Sealant?
Ultimate Safety Guarantee: Our top priority is the well-being of your aquatic ecosystem. After full curing (approximately 24 hours), the sealant becomes completely inert and non-toxic, releasing no harmful chemicals into the water. It's safe for all types of fish, plants, and invertebrates.
Unbeatable Performance: Don't let the focus on safety fool you-this is a high-strength adhesive. It bonds exceptionally well to glass, acrylic, ceramic, and most common building materials. Its permanent flexibility ensures your seal lasts for years, enduring the constant pressure of water.
Crystal Clear Finish: For a professional-looking aquarium, the seams should be invisible. Our sealant cures to a transparent, glass-like finish that doesn't distract from the beauty of your underwater landscape.
The Handy All-Rounder: While perfect for aquariums, its utility doesn't stop there. It's the only sealant you need for a multitude of sealing and bonding tasks around the house. Re-caulk your bathroom, seal a kitchen sink, or fix a window frame-it handles it all with ease.
acetic silicone sealant, aquarium sealant, fish tank sealant
Technical Specifications:
Chemical Type: Acetic (This is why it has a temporary vinegar-like smell during curing, which dissipates completely.)
Color: Clear
Full Cure Time: ~24 hours (at 25°C and 50% relative humidity)
Skin Over Time: 15-30 minutes
Shore A Hardness: ~23
Tensile Strength: > 1.5 MPa
Elongation at Break: > 400%
Service Temperature: -60°C to 200°C
Perfect For:
Constructing new custom aquariums and fish tanks of all sizes.
Repairing leaks and resealing old aquariums.
Sealing terrariums and vivariums for reptiles.
Household waterproofing: bathrooms, kitchens, windows, and doors.
General glass bonding and craft projects.
Packaging & Ordering Info
Available Sizes: Standard 300ml cartridge (fits all standard caulking guns). Also available in 80ml tubes for small repairs.
Shelf Life: 18 months from date of manufacture when stored in a cool, dry place.
Bulk Orders & OEM: We are a professional manufacturer. Welcome inquiries for bulk wholesale orders and custom private labeling. Contact us for a competitive quote.

Before curing |
Type Of Silicone Sealant | acetic |
| Color | clear, black, white | |
| Proportion (g/cm3) | 0.97 | |
| Extrusion(g/min,23ºC) | 260 | |
| Resistance To Vertical Flow(mm) | 0 | |
In the curing |
Tack Free Time(min) | 9 |
| Curing Rate(mm/1day) | 3 | |
| Curing Rate(mm/3day) | 6.5 | |
| Curing Rate(mm/7day) | 9 | |
| Application Temperature(ºC) | +5~+40 | |
After cured |
Elastic Recovery Rate | 95% |
| Hardness (Shore A) | 20 | |
| Joint Movement Capability | 20% | |
| Working Temperature(ºC) | -30~+120 | |
Mechanical properties ofa 2mm thick film |
Modulus 100% extension(Mpa) | 0.43 |
| Tensile Strength (Mpa) | 2 | |
| Elongation At Break, % | 500 | |
| Mechanical properties of H-type specimens |
Modulus 60% extension(Mpa) | 0.4 |
| Tensile Strength (Mpa) | 0.7 | |
| Elongation At Break, % | 150 |








Q1: Are you manufacturer?
A1: Yes, we are manufacturer. We have 2 factories which around 50,000 square meters, our production capacity is over 30000 tons per year, on time delivery is supported.
Q2: Do you provide OEM/ private label service?
A2: Yes, We offer OEM/private label services. Additionally, we provide free design and small MOQ for private label sealants.
Q3: What other products do you have?
A3: Runtai serves one stop solution of sealants & adhesives, including: PU Foam, Silicone Sealant, Acrylic Sealant, PU Sealant, MS Sealant, Spray Paint, Water Based Adhesive, Zero Nail Construction Adhesive, Marble Glue & Epoxy Resin.
Q4: Why do we choose you?
A4: With 2 factories which are around 50,000 square meters,Runtai is called one of the biggest manufacturers in China. Our products are fully comply with American & European standards. We supply to fortune TOP 500 enterprises in more than 50 countries, which is the Top10 customized Export Volume in China.
Q5: Can I get a free sample?
A5: We offer free samples for clients. Please feel free to contact us for more details , we can recommend the suitable samples according to your requirement.
Q6: What is benefit to be your distributors?
1. We support our distributor to become stronger.
2. We provide technical Know-How on selling.
3. We train our distributor's sales team.
4. We train our distributor's dealers.
5. We support you to become better.