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Your cart is empty.C.R. LAURENCE 777BL CRL Black 777 Butyl Rubber Sealant. CRL 777 Butyl Rubber is a unique, butyl-based sealant specially formulated using a blend of age resistant polymers to give excellent weathering properties at various temperature extremes. CRL 777 offers excellent adhesion to most clean surfaces, and will withstand joint movement of 10% without affecting its water-tightness. It also has a special ultraviolet fighting agent for exceptional service life.. Part Numbers Variations: 777BL
ZeroSixFiveZero
Reviewed in the United States on February 6, 2025
Great product. This is what you need to put the plastic weather barrier back on the door. Scrap the old stuff off and apply a healthy bead of this. Will definitely be using on future projects.
Gdavis
Reviewed in the United States on January 2, 2025
Very sticky surface (which is nice) and the colors at bright.
Stacey Yeatts
Reviewed in the United States on July 22, 2024
works great
S
Reviewed in the United States on June 26, 2024
Applied easily. Gooey as you would expect. Don't get it on anything you don't want it on- but if you want it there, it will stay.Spiderwebs are normal, be careful.
Peter Panruk Jr
Reviewed in the United States on June 22, 2024
I really Iike the black butyl color. Almost everything blends well with color black on surfaces. Not as messy as other caulks, adheres well on surfaces, and worth the money spent on them.
Charles Hamann
Reviewed in the United States on November 18, 2024
The rubber sealant worked perfectly for sealing the frame of the window to the body of my truck. I did have to go back and fill in some places, not the fault of the sealant, just dips in the window channel. Sealed out the water and wind noise
Troy C.
Reviewed in the United States on November 11, 2024
Great product
Customer
Reviewed in the United States on April 12, 2024
Purchased several tubes for a large project. The tip seems overly large so you can't apply all of the tube contents. Normal caulk gun seal puncture not long enough unless you remove a third of the tip - which would be a very large application bead. Since I wanted a small bead I used a cabinet-tip screwdriver. Not easy to clean off from my screwdriver. Also the tube-tip seems floppy. One tube blew out the side after 80% used.Once the black goop was applied where I wanted it, it works great. Cure time depends upon applied thickness. After a month it is still adhering to what I applied it on, connecting pieces of rubber, or rubber to steel.
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