You may also like
Hercules® Gallon Heavy Body Furnace Cement
35526 - spec sheet
Features
- Will not shrink, crack or crumble
- Freeze point below +10°F for uncured material
- Meets or exceeds OSHA requirement for minimal silica content
- Can be used on oil, gas, coal, and woodburning heating
- Patented Clean ‘n Friendly™ formulation contains no oils, asbestos or silicon dioxide
- For warranty product details, refer to the Oatey limited Warranty document
35526 - spec sheet
Manufacturer Resources
Product Specs
- Volume:
- 0.312
- Department:
- Plumbing
- Product Group:
- Plumbing
- Product Subgroup:
- Pipe Cements & Primers
- Product Type:
- Cement/Primer
- Product Finish:
- Black
- Product Weight:
- 16.35
OATEY 35526 – Frequently Asked Questions
1) What kind of heating equipment can Hercules Heavy Body Furnace Cement be used on?
Oatey's Hercules heavy body furnace cement, model 35526, is made for oil, gas, coal, and woodburning heating equipment. It's the sealing compound for joints and seams on furnaces, boilers, stoves, and smoke pipe where the material has to take heat without breaking down. It cures to a black finish.
2) Will furnace cement crack or fall out of the joint after it cures?
No. The Hercules heavy body formulation is stated not to shrink, crack or crumble, which is what keeps a smoke pipe or firebox joint sealed through repeated heat cycles rather than opening up after the first season.
3) Does this furnace cement contain asbestos or silica?
The Hercules Clean 'n Friendly patented formulation contains no oils, asbestos or silicon dioxide, and it meets or exceeds the OSHA requirement for minimal silica content. That matters for institutional and school maintenance crews who have to document what goes into a boiler room.
4) Can furnace cement be stored in an unheated truck or warehouse over winter?
Uncured Hercules furnace cement has a freeze point below +10 degrees F, so it tolerates cold storage better than most water-based compounds. Below that it's at risk, so a van or shed that drops into single digits isn't a safe spot for it.
5) What is the difference between heavy body furnace cement and a regular pipe cement or primer?
They do unrelated jobs. Solvent cements and primers chemically weld plastic drain and supply pipe. Hercules 35526 is a heat-resistant sealing compound with a heavy, trowelable body, used on oil, gas, coal, and woodburning heating equipment joints. Don't substitute one for the other.
6) How much furnace cement is in the Oatey 35526 container and how heavy is it?
It's the gallon size, listed at 0.312 volume and 16.35 in weight. A gallon of heavy body cement covers a lot of joint work, so it suits MRO crews doing multiple furnaces or a full smoke pipe run rather than a single patch.
7) Is Hercules 35526 furnace cement the right product to order by the exact part number?
Order it as Oatey 35526, the Hercules gallon heavy body furnace cement. That single model number covers the gallon size, black when cured.
How fast can I get the OATEY 35526 delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the
continental
U.S.
Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit,
reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the OATEY 35526 come with a warranty?
Absolutely. The OATEY 35526 is backed by a manufacturer’s warranty.
For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the OATEY 35526?
You can call, text, or email our expert support team for fast answers. We’re here to help with
product
selection,
installation tips, and troubleshooting. Contact Us
Why buy the OATEY 35526 from ZenSupply?
ZenSupply makes it easy to get the commercial door hardware you need—fast shipping, expert support,
and
rewards on
every order.
Our team is always ready to help you choose the right product for your project.