






Desertcart purchases this item on your behalf and handles shipping, customs, and support to SINGAPORE.
๐ฅ Fortify your fireproof game with unbeatable heat defense!
Colloidal Silica Rigidizer is a high-performance coating designed for refractory ceramic fiber products, offering exceptional heat resistance up to 2300ยฐF, thermal shock durability, and erosion protection. Its versatile application methods and fast curing time make it ideal for industrial furnaces, paper-making, and protective coatings, covering approximately 384 square feet per quart. Highly rated by professionals, it ensures long-lasting strength and efficiency in demanding thermal environments.











| ASIN | B08FDDZDVQ |
| Best Sellers Rank | #62,781 in Arts, Crafts & Sewing ( See Top 100 in Arts, Crafts & Sewing ) #58 in Firing Accessories |
| Brand | SIMOND STORE |
| Brand Name | SIMOND STORE |
| Coverage | Approximately 384 square feet (12 inches x 24 inches x 16 blankets, assuming 1 inch thickness and 1 quart covers 16 blankets) |
| Customer Reviews | 4.6 out of 5 stars 436 Reviews |
| Item Weight | 3.2 Pounds |
| Manufacturer | Spectra Overseas |
| Manufacturer Part Number | RCB-07 (731..) |
| Material | Colloidal Silica Compound |
| Material Type | Colloidal Silica Compound |
| Model Number | RCB-07 (731..) |
| Number of Items | 1 |
| Number of Packs | 1 |
| Recommended Uses For Product | Thermal insulation, fire resistance |
| Unit Count | 32 Fluid Ounces |
J**H
Great
Worked as described and held up to the heat
C**R
It works well and is worth every penny
This stuff really works well. I did a couple of coats an still had a bunch left over. It really does help to lock in the foam. It dried very fast. I would 100% buy again but I won't have to because I still have a bunch. Great deal. Great heat retention. Easy to apply. Really toughens the foam, and it comes in a big bottle!
S**N
Super
Awesome! Used on propane system.
N**N
As advertised
Great colloidial silica sol for many purposes.
B**R
Good product
Only reason I didnโt give it a full 5* is because of drying time, works well, has good amount, just took days to dry for some reason
D**I
Easy to use and gets the job done
I was able to apply most of it with a handheld trigger sprayer, although after a while it became more difficult to spray down the kaowool. For some reason the solution wasn't shooting out of the nozzle as it was at first. The trigger sprayer was still able to work with plain water so no doubt it was whatever is suspended in the collodiial solution that might have affected the sprayer. The solution gave the kaowool a somewhat solid surface. It's actually more like crusted toast. The rest of it is still a bit springy, but the refractory wool isn't intended to act as any kind of structure. Most important is that the surface isn't fluffy and loose.
P**L
Great seller fast ship no issues
have not used it yet but I'm glad I read about it. Use it on all kaowool furnace blanket items. they will last a lot longer.
T**R
Works as advertised.
Works as stated in the description. I did a double saturation and it really firmed up the insulation very nicely. I would recommend this size for more than one small project and to maintain the rigidness of my original forge after several uses.
S**E
Would of rated ZERO stars if i could. Really not satisfied!! Tap water would of done the same!!
Couldnโt use the product half of the container was full of crystal and half water didnโt do anything to my ceramic blanket could of just put water it would of done the same!!! Really not satisfied
V**R
all good thanks
all good thanks
R**.
Seems to work
Used it in my little forge
B**B
Skeptical
Was a little skeptical because it came clear instead of the other rigidizers that are blue. But worked well and cured up in a day
C**T
Exactly as advertised
Dont water it down as much as they say too. Add a little bit of food colouring, it helps with application.
Trustpilot
5 days ago
2 weeks ago