Metacaulk 1000 Intumescent Firestop Sealant

Metacaulk 1000 Intumescent Firestop Sealant

Customer Reviews

:In stock

: 66640

: Adhesive

: Metacaulk

: Adhesive, Shop Metacaulk Firestop Products


  • UL Classified Systems up to 4 hrs.
  • High intumescent
  • VOC compliant
  • Excellent freeze-thaw
  • For interior use  paintable
  • Meets ASTM E 814, UL 1479 & UL 2079 standards.
  • STC rating 62


Metacaulk 1000 is a water-based, flexible, highly intumescent sealant designed for use on metal, insulated, fiberglass and plastic pipes. It can also be used for top of the wall construction joints, as well as power and telephone cables. Sound Transmission Class (STC) rating 62, Tested in a UL 411 wall assembly/section to ASTM E90.

Product Code Size Quantity UPC Interleaved Dimensions Cubic Feet
66640 10.3oz cartridge 12 021449666404 10021449666401 8x6x12 .34
5 Gallon
1 021449663090 NA 13 diax14 1.08

Returns Policy

You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).

You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).

If you need to return an item, simply login to your account, view the order using the 'Complete Orders' link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.


We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.

When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.

Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.