Will it fix a leaky plexiglass tank?

100% silicone is for use on glass and not recommended for long term adhesion on acrylics, plexiglass, plastics since they contain petroleum products which will cause the silicone to peel off in time. (MAY be fine for short-term use.) There are special adhesives/sealants for use with acrylics and plastics and they will be labeled as such. Plexiglass, specifically, needs an adhesive method that actually "melts" the plexiglass, which then creates the bond. 100% silicone adhesives/sealants will not do that.

Could this be used safely as a gasket around my filter screen at the bottom of dishwasher used to block food particles around edge of screen filter?

I’m no expert but as it is silicone and it is safe for aquariums once cured, it should be safe for a dishwasher.

Will salt water eat sealant

In general silicon sealants will handle salt water. I used this particular sealant for a fresh water tank, but I have used silicon sealants on my salt water sail boat without an issue. The main problem with all sealants is you need a clean, oil free, and dry surface for the sealant can properly attach to the surface. You need a humid, but not wet environment for the sealant to cure. I suggest placing a well dampened cloth in the bottom of the tank. You don't want water on the sealant, but you need moisture in the air.

After applying the silicone, approximately how many minutes do you have before taking the tape off?

if you mean using masking tape to keep the glue off an area, i would pull it off when it is still wet, and probably wouldnt wait more than 15 minutes to do so. Remember you can spritz the silicone with water to help it cure faster and better.

Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

Help Track order

Account Cart

Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

Help Track order

Account Cart

Midwest Hearth Clear Aquarium Silicone Sealant - 10.2 Fluid oz Cartridge

Midwest Hearth Clear Aquarium Silicone Sealant - 10.2 Fluid oz Cartridge

Product ID: 259861724

Details

Brand
Midwest Hearth
Colour
Multicolored
Full cure time
10 Days
Item weight
10.2 Ounces
Liquid volume
10.2 Fluid

💧Waterproof & fish-safe

🧊Wide temp range -70°F to 450°F

🧱High modulus strong glass bond

Buy anything from 5,000+ international stores. One checkout price. No surprise fees. Join 2M+ shoppers on Desertcart.

VT11456

Duties & taxes included

In stock

Sold byAmazon VanuatuDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Vanuatu.

Secure transaction

Description

🔧 Seal smart, swim safe — the pro’s choice for flawless aquariums!

FISH FRIENDLY FORMULA - Non-toxic when fully cured, ensuring a safe habitat for your aquatic friends.
NO DRIP NO MESS APPLICATION - Non-slump formula sticks to vertical surfaces—perfect for precise, clean sealing.
UNMATCHED AQUARIUM DURABILITY - Seals glass with a high-strength bond that lasts underwater without primers.
EXTREME TEMPERATURE RESILIENCE - Works from freezing cold to scorching heat, maintaining integrity in any environment.
VERSATILE FRESH SALTWATER USE - Engineered for both freshwater and saltwater tanks, plus vivariums—one sealant to rule them all.

Midwest Hearth Clear Aquarium Silicone Sealant is a premium, high modulus RTV silicone designed for strong, primer-free glass bonding. It remains waterproof and fish-safe after curing, withstanding extreme temperatures from -70°F to 450°F. Its non-slump formula allows clean vertical application, making it ideal for fresh and saltwater aquariums and vivariums. Trusted by professionals for durable, leak-proof aquarium construction and repair.

Specifications

ASIN	B00EZB1QQ2
Best Sellers Rank	#80,662 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #186 in Silicone Sealers
Brand Name	Midwest Hearth
Color	Multicolored
Customer Reviews	4.6 4.6 out of 5 stars (2,805)
Full Cure Time	10 Days
Initial Hardening Time	7 Days
Item Form	Liquid
Item Weight	10.2 Ounces
Liquid Volume	10.2 Fluid Ounces
Manufacturer	Midwest Hearth
Material Type	Silicone
Model	ASI Aquarium Clear
Number of Items	1
Part Number	ASI Aquarium Clear
Surface Recommendation	Glass
UPC	802455893066
Unit Count	301.65 Milliliters
Water Resistance Level	Waterproof

Common Questions

Are the products genuine and authentic?+

Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

How long does delivery take and is it reliable?+

Delivery times vary by destination country, typically ranging from 3-9 business days. Each order is fully trackable through our system. We handle all customs clearance and use reliable courier partners for last-mile delivery. You'll receive regular updates about your order status via email and our app.

What is Desertcart? Is it safe to order from?+

Desertcart is an international e-commerce platform operating since 2014. We securely process thousands of orders globally each day. Every product goes through our quality verification process before delivery, and we provide end-to-end order tracking, 24/7 customer support, and a comprehensive returns policy to ensure a safe shopping experience.

How is product pricing calculated?+

Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Anita G.

Good experience, but the tracking updates could be better.

2 months ago

Rajesh P.

Customer service was outstanding when I had questions about the product.

2 days ago

View all Trustpilot reviews

Shop Global, Save with Desertcart

Value for Money

Competitive prices on a vast range of products

Shop Globally

Serving millions of shoppers across more than 100 countries

Enhanced Protection

Trusted payment options loved by worldwide shoppers

Customer Assurance

Trusted payment options loved by worldwide shoppers.

Desertcart App

Shop on the go, anytime, anywhere.