can it be used to help seal cracks in heat exchangers?

I might, however I would not count on this product to protect from the exhaust gases that may pass through the heat exchanger . If possible I would remove the cracked unit and either replace of braze up the crack.

Eletric hot water pot seam is leaking water, Can I use it to seal the seam ?

Just an 80 yr old women to answer: I don't know, It was use on our free standing fireplace for the seam around the door and worked fine. You could probably get an answer from the Rutland company.

I have a crack in the glass could this be used to seal that so it doesnt crack anymore ??

I doubt it but it does harden up pretty good

How long must it be heated to cure? Is the temperature rating continuous duty?

This product must slowly be brought to 500-F over the course of a few hours, and kept at 500-F for an hour. The cement is good for temperatures up to 2,000-F continuously. Here is a link to a video that walks you through the heat-cure. https://youtu.be/9kDHsm0YYHk

Fully operational. Shipping worldwide, on schedule.Duty & taxes paid at delivery

Help Track order

Account Cart

Fully operational. Shipping worldwide, on schedule.Duty & taxes paid at delivery

Help Track order

Account Cart

Rutland Products, Black Rutland Stove Gasket Cement, 2.3-Ounce Tube, Size, 2 Fl Oz

Product ID: 255332830

Details

Brand
Rutland
Item form
Powder
Material
High Cement
Special features
Waterproof
Specific uses for product
Repair

🔥Withstands up to 2000°F

🖤Original black silicate-ceramic formula

🛠️Multi-surface metal & gasket bonding

Description

🔥 Seal the heat, fix with finesse!

WATERPROOF SEAL - Ensures durable, moisture-resistant repairs that stand the test of time.
PRO GRADE FORMULA - Original black silicate-ceramic cement trusted by professionals for airtight seals.
VERSATILE ADHESION - Bonds fiberglass gaskets to metal and repairs small metal cracks seamlessly.
COMPACT CONVENIENT - 2.3-ounce tube designed for precise application and minimal waste.
HEATPROOF RELIABILITY - Rated to endure extreme temperatures up to 2000°F (1090°C) for lasting stove repairs.

Rutland's Black Stove Gasket Cement is a professional-grade, high-temperature resistant adhesive designed for sealing stove gaskets and repairing metal surfaces. Its original black silicate-ceramic formula withstands up to 2000°F, bonds fiberglass to metal, and repairs small cracks, making it an essential tool for airtight, durable stove maintenance.

Specifications

ASIN	B000FKF80M
Brand Name	Rutland Products
Color	Black
Compatible Material	Metal
Container Type	Tube
Customer Reviews	4.4 4.4 out of 5 stars (2,769)
Global Trade Identification Number	00022624000778
Item Form	Powder
Item Package Quantity	1
Item Type Name	Rutland Stove Gasket Cement, 2.3-Ounce Tube, Black
Item Weight	0.01 Ounces
Manufacturer	Rutland Products
Material Type	High Temperature Cement
Model	77
Number of Pieces	1
Other Special Features of the Product	Waterproof
Part Number	77
Specific Uses For Product	Repair
UPC	022624000778
Unit Count	2.3 Grams
Volume	2.3 Fluid Ounces
Water Resistance Level	Not Water Resistant

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

Ali H.

Fast shipping and excellent packaging. The Leatherman tool feels very premium and sturdy.

1 day ago

Ravi S.

I loved the variety of products available. Will definitely shop again.

2 months 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.

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Sneha T.

Received my product in pristine condition. Great service overall.

1 month ago

Ayesha M.

The product exactly matches the description. Very satisfied with my purchase.

5 days ago

View all Trustpilot reviews