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Ships within 48 hours · Estimated delivery Aug 5 - Aug 10
Cobra Rods are 7/16" in diameter and are two inches in length
nor will it harm log home chinking or sealants
Add to gallons or pails
Cures within 72 hours
Backer Rod, 1/2" Box (2,500 feet) 1.5 Gallon Tub Cobra Rods are 7/16" in1 4" Roll (3,200 feet) Backer Rod is extruded closed cell polyethylene rod that is used in cracks, checks and gaps before filling them with sealants such as Perma Chink, Energy Seal and Check Mate 2. Caulk joints should not be more than 3 8 thick and Backer Rod provides a way to fill a deep crevice or gap while maintaining the proper sealant thickness for maximum performance. Backer Rod should also be used in checks over 1 4 wide before applying Check
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