🐠 Seal your tank with confidence — where strength meets safety!
Wacker 121 Professional Aquarium Silicone Sealant is a premium-grade, German-made, FDA-approved adhesive designed for aquarium construction and repair. Its high viscosity and tensile strength (360 lbs) ensure durable, waterproof seals on glass, plastics, and ceramics, while being completely safe for fish and aquatic life. Fast curing and odorless, it’s the trusted choice for both hobbyists and professionals building or maintaining tanks of any size.
| Brand | Wacker |
| Specific Uses For Product | Glazing, Aquarium Tank Construction, Industrial Bonding Applications |
| Material | Silicone |
| Compatible Material | Glass, Stone |
| Item Form | Paste |
| Special Feature | Non Toxic, Strong |
| Colour | Clear/Transparent |
| Item Package Quantity | 1 |
| Viscosity | High |
| Water Resistance Level | Waterproof |
| Tensile Strength | 360 Pounds |
| Net Quantity | 310 Milliliters |
| Manufacturer | Wacker, Wacker |
| Manufacturer | Wacker |
| Country of Origin | Germany |
| Model number | WCK121 |
| Number of Memory Sticks | 1 |
| Item Weight | 420 g |
| Product Dimensions | 4.9 x 6.3 x 9.3 cm; 420 g |
| Item model number | WCK121 |
| Item Height | 9.3 Centimeters |
| Item Width | 6.3 Centimeters |
| Included Components | Nozzle |
R**L
Value for money
Best silicone in the market for aquariums. Value for money ,adhesive quality is amazing dries up quickly,
A**R
Good
Very good product,,,,good bonding,,,,,I used between glass and fiber glass
P**R
Best for fish keepers. 🐠
Pros:Not smelly.Cheap and affordable.Works as intended.Strong and fast acting.Cons:The nuzzle is kinda leaking.
N**A
Nice quality
Very nice Product, bonding between two parts too good
K**H
Excellent
Reasonably priced, gets the job done. Excellent for building aquarium
A**R
Good product
Good product. Up to the mark as was advertised.Would recommend the seller.Trusted seller. Does Amazon credit.Good and credible.
U**.
Doesn't standout from rest of the brand... Not buying it again ☹️
This silicon is really thick and High viscosity also little hard because glass need heavy force to traceout air gaps. It doesn't standout other aquarium silicon brand though it is mentioned 'aquarium silicon' .it's heavy mess because quality of silicon is such that it need too much beed and so much waste out of it, so more cost and moderate amount of beed leaves air gap. I will update on condition of silicon after a month strength might be good.
S**E
Best budget silicon
Adhesive strong flexible
Trustpilot
3 weeks ago
2 weeks ago
