🖤 Seal it once, seal it right—Black BioSeal means business.
Black BioSeal is a premium 100% silicone sealant caulk designed for general-purpose waterproof sealing. It cures rapidly to form a durable, shrink- and crack-proof bond that lasts up to 50 years without yellowing or odor. Ideal for multiple surfaces including tile, glass, and metal, it’s ready for water exposure in just 30 minutes, making it the go-to choice for professionals demanding fast, reliable, and clean sealing solutions.
| ASIN | B0BFCHRMFB |
| Brand | ZERED |
| Colour | Black |
| Customer Reviews | 4.6 out of 5 stars 64 Reviews |
| Full Cure Time | 30 Minutes |
| Full cure time | 30 Minutes |
| Global Trade Identification Number | 00196852472208 |
| Included Components | 100% RTV Silicone |
| Initial Hardening Time | 30 Minutes |
| Initial hardening time | 30 Minutes |
| Item Form | Liquid |
| Item Weight | 10.1 Ounces |
| Item weight | 10.1 Ounces |
| Liquid Volume | 10.1 Fluid Ounces |
| Liquid volume | 10.1 Fluid Ounces |
| Manufacturer | zered |
| Manufacturer Part Number | Bioseal-GP-BK |
| Material | Silicone |
| Number of Items | 1 |
| Surface Recommendation | Tile |
| Unit Count | 1.0 count |
| Water Resistance Level | Waterproof |
J**E
Great product for boats
Works well for boat. Fills in holes and seals well great value. Has a slight smell but is not bad. Easy to put on with a basic caulk gun.
J**E
Works great
Thank you
N**E
Seals
If you need black silicone this is it! Slight shrinking but looks great. Price wasn't terrible and it was packaged nicely.
J**N
Definitely not odorless
Works very well, and dried nicely. Although in the description, it said odorless. Its definitely not odorless. Now im wandering how long the smell will last. Because ive used it for my most recent vivarium build. Hopefully the smell dissipates soon.
T**.
Smooth
Very smooth, easy to apply caulk. A little thinner than silicone, but hold shape perfect.
Trustpilot
5 days ago
3 weeks ago