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RectorSeal firestop sealant prevents the spread of fire, smoke, hot gasses, and water. Used for construction joints and through penetrations. Can also be used on metal, insulated pipe, fiberglass, plastic pipe, wall joint, power, telephone, and datacomm cables. Water based, non-sag caulking grade heat resistant sealant that is easy to apply as well as retrofit. Cures to an elastomeric seal that is suitable where dynamic movement is expected. Can be applied from a tube, sausage pack, or pail. Applied with a conventional caulking gun, bulk loading gun, or can be troweled from the pail. All systems rated for up to 4 hours as per ASTM E814 (UL1479) and ASTM E1966 (UL 2079) test standards. For temperature applications of 120 degrees fahrenheit, providing flexible barrier protection. For interior use and paintable, with excellent freeze-thaw capability. FOR THE TRADESMAN: RectorSeal is recognized as a leading provider of quality solutions for the professional trades serving heating, ventilation, and air conditioning (HVAC/R), plumbing, electrical, and construction markets.
From the Manufacturer
Metacaulk MC 150+ is an in tumescent, one-component, general purpose, fire-rated sealant and smoke seal for construction joints and through-penetrations. A water-based, non-sag caulking grade sealant that is easy to apply as well as to retrofit. An economic choice for most common applications.
Customer
Reviewed in the United States on October 3, 2023
Not a fire engine red, a bit off-red.
Cinthya
Reviewed in Mexico on November 3, 2021
Excelente material
Brian J. Martin
Reviewed in the United States on July 28, 2020
This stuff was easier to use than the other brands I’ve used, so the result is better. This is important to building fire safety, so I recommend MC 150 over other brands.
@oneuniverse
Reviewed in the United States on November 4, 2020
It does exactly what is said to do.
Benny Young
Reviewed in the United States on October 27, 2020
I can't comment on the functionality because I have thankfully not had a fire, but it was pretty easy to work with and it hasn't crumbled out of the gap it was installed to seal. Thick enough to plug a gap and thin enough to come out of a caulk tube. That being said, even if you take the pressure off the piston while using it, because you have to push it in pretty hard to get anything to come out, the stuff does continue to come out a bit longer than other caulks. That takes a little getting used to.
Kenneth Davis
Reviewed in the United States on August 12, 2019
Great product for the price.
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