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💧 Seal it once, seal it right — waterproof confidence for every project!
DAP Dow Corning Silicone Rubber Aquarium Sealant 00688 is a premium 100% silicone adhesive designed for durable, flexible, and waterproof sealing. FDA-approved for incidental food contact and safe for aquatic life, it’s perfect for household repairs, aquarium building, and kitchen projects. Compact and easy to apply, it resists cracking and shrinking, ensuring long-lasting performance across a variety of surfaces.



| ASIN | B000KE4PBQ |
| Best Sellers Rank | 181,104 in DIY & Tools ( See Top 100 in DIY & Tools ) 10,460 in Adhesives & Sealers |
| Brand | DAP |
| Colour | Clear |
| Compatible Material | Rubber |
| Container Type | Cartridge |
| Country Of Origin | USA |
| Customer Reviews | 4.6 out of 5 stars 979 Reviews |
| Full Cure Time | 24 Hours |
| Global Trade Identification Number | 00070798006881 |
| Included Components | 1 Tube |
| Item Form | Paste |
| Item Package Quantity | 1 |
| Item Type Name | Adhesive Sealant |
| Item Volume | 2.8 Fluid Ounces |
| Item Weight | 0.16 Pounds |
| Item form | Paste |
| Manufacturer | Dap |
| Manufacturer Part Number | 7079800755 |
| Material | Rubber |
| Model Number | 7079800755 |
| Number of Pieces | 1 |
| Other Special Features of the Product | Waterproof |
| Special feature | Waterproof |
| Specific Uses For Product | Aquarium Sealing, Craft, Household Projects, Kitchen Projects, Repairing Ceramics |
| Specific uses for product | Aquarium Sealing, Craft, Household Projects, Kitchen Projects, Repairing Ceramics |
| UPC | 070798007550 070798006881 |
| Unit Count | 1.0 count |
| Viscosity Level | Medium |
| Water Resistance Level | Waterproof |
T**7
Five Stars
Working ok, I still need to add a few layers
M**H
What for
I bought this a long time ago and I can't remember what for, but I do remember it did the job well.
J**9
All good so far
Used this to glue the washer to a jumper plate in a tap - the retaining screw at the base of the jumper plate had sheared off so nothing much was holding it in place. Seems to have done the job - tap is working well - only time will tell if it has staying power.
A**I
يقوم بالغرض
جيد وقوي استخدمته داخل غسالة الصحون لتثبيت جزء بلاستيكي والى الان بعد شهر واحد الامور تمام
M**A
Very good product
Because is safe I’ve solved my falling off shoes problem. I have number of shoes that jus hold to the heel very badly, and keep falling of all the time when walking. So 2 stripes of that silicone fixed the problem and I can use my beautiful shoes finally :)
R**N
It says FOOD SAFE on the front of the package - I used it on acrylic and it worked great. Holding 2 pieces together well
This could not be easier. It says FOOD SAFE on the front of the package. I had an acrylic serving dish that needed a fix. It had broken into 3 pieces, and one piece had to be reattached completely- Imagine a circle broken in two, with a tube coming out. It fixed it right up. It's visible that it was fixed, but it is nice and stable and usable and holding fine. No water is leaking through the repair- and the vessel's primary purpose is to dispense beverages. Just snip the tip, it comes out a bit thick, like a thick silicone gel, and hold it into place for 5 minutes. Then, it needs to harden for 24 hours. I followed the directions and I'm very pleased with the results. I would use it again. It was more than enough for my project.
C**A
Excellent and long lasting
I used this to glue a handle back to one of my mugs and the handle has stayed in place for more than 2 years.
K**E
small plaster repair
Right size for small plaster repair with decorative tile and worked really well . . .
Trustpilot
3 weeks ago
1 month ago