Hardcast/Carlisle - Flex-Grip 550 is an all purpose, fiber-free, duct sealant for use on all types of metal duct, glass fiber duct board, and flex duct, as well as duct fabric and flexible tubing runouts. Distinguished by its ability to accommodate minor vibration and movement, Flex-Grip 550 stays flexible to save call-back labor. Flex-Grip 550’s excellent coverage rates and easy brush-on application provide low installed cost.
UL 181 B-M Listed
Passes ASTM C-731, ASTM D-2202
USDA, EPA and FDA Approved
SCAQMD Rule 1168
City of Los Angeles Approval RR #8069
Warning: this product contains a chemical known to the State of California to cause cancer. P65Warnings.ca.gov