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🛠️ Seal your craft with confidence—durability meets safety in every drop!
Sienna Studios Acrylic Sealer is a premium, water-based acrylic formula designed specifically for concrete and cement crafts. It offers a buildable low-gloss finish that enhances surface detail while providing water resistance and long-lasting protection. Non-toxic and food-safe once cured, it’s heat-resistant and compatible with Jesmonite and other porous materials, making it ideal for both indoor and outdoor use. Proudly made in the USA and ready to use straight from the bottle.





| ASIN | B0DW7W4V2N |
| Best Sellers Rank | #59,783 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #200 in Hardware Sealers |
| Brand Name | Sienna Studios |
| Color | White |
| Customer Reviews | 4.2 4.2 out of 5 stars (84) |
| Global Trade Identification Number | 00198715521757 |
| Included Components | 1 x Acrylic Sealer Bottle |
| Item Form | Liquid |
| Item Weight | 525 Grams |
| Manufacturer | Sienna Studios |
| Material Type | Acrylic |
| Number of Items | 2 |
| Part Number | ACR-02 |
| Style Name | 48oz - Low Gloss |
| Unit Count | 16.0 Fluid Ounces |
| Water Resistance Level | Water Resistant |
H**A
Versatile and heat resistant sealant
I used this as a sealant for wooden candel vessals. This is the only heat resistant sealer that is safe and non toxic. For the inside of a candle vessal it has to meet certain criteria and this does it all! Love that it works on multiple surfaces for a clear finish.
M**2
Expensive yes but it works
I have purchased this 3 times so far. While it is expensive for the amount you get, it does work. It provides a lovely gloss finish. I use it to coat the inside and outside of my cement candle vessels. I apply four coats to the inside and outside of the jar, and one coat to the very bottom. I was able to coat 100 candle jars this way with one bottle, using a round foam brush I purchased from a local big box craft store. I use the Boowan Nicole 9oz mold and the Modern Craft Labs tulip mold. I have not had any issues with the wax leaking through.
M**A
SUPER 👍 GOOD
This really works , it is small , but little product is used , it has a good coverage , I will show you a finish and you will draw your own conclusions . 10 /10
G**Y
Misleading and terrible customer support. Dismissive and unhelpful support.
When I purchased this sealer, it stated that it worked on all porous cement or concrete. So I purchased it for my Hydrostone cement crafts. I did find a method that kind of worked. But the customer service from Sienna Studios was not helpful. Since then they removed that statement from the ad. Still really misleading. Don't buy this for any sort of Gypsum cement.
P**E
May purchase again
This product works well wish I could get more in the bottle for the price. Small
J**A
Este es un sellador , me gusta porque dejas las esculturas limpias
A**B
Great sealer
Great product, not a huge jug that is unmanageable. Easy instructions
A**N
Realmente es bien malo ese producto y extremadamente caro.hago figuras de yeso y no las sella.super malo no lo aconsejo.le di una estrella y ni eso se merece
A**R
It is very easy to work with; while it has a semi-matte finish initially, applying additional coats will create a glossy effect.
D**V
We applied this sealer to a plaster product in 4 full coats, strictly following all the manufacturer’s recommendations. After letting it dry completely (over 24 hours), we tested for water resistance. We poured water into the item, and within 15–20 minutes, it had absorbed over 100 ml, soaking through and visibly darkening the plaster. This completely ruined our entire batch of handmade items. Time, effort, and materials were wasted. If you're looking for actual water resistance — this is not the product. Very disappointing and absolutely not recommended.
K**A
For the price you don't get much, however it works well and it sealed my hydrostone candle jars perfectly with 3 coats. I used the dipping method and it has proven to be waterproof and wax hasn't seeped through after burning a candle, so I'm happy with the product. I just wish it were possible to buy it in bigger containers or the prices wasn't so high
P**D
Très cher pour la quantité mais bonne qualité
A**N
I have tried this many times, using the direct instructions. Using acrylic paint on both cement and also on ceramic and even though I have let my items dry for over a month, as soon as I start to apply it using the cloth as per instructions my paint runs. Very disappointed especially for the price!
Trustpilot
5 days ago
3 weeks ago