CRL 5/8" Closed Cell Backer Rod - 1550' Case Finish:Gray They hold securely between the

They hold securely between the cartridge and the end of the caulking gun

Separation occurs in glazing Putty

Do not apply to surfaces with special protective or cosmetic coatings without prior consultation of the manufacturer

with two different Primers to best suit your assembly time frame

CRL 5/8" Closed Cell Backer Rod - 1550' Case Finish:Gray They hold securely between theAllows Easy Control of Sealant Application Thickness Won't Adhere to Sealants; No Bond Breaker Needed Compatible with All Cold Applied Sealants CRL Closed Cell Backer Rod is a round, flexible, closed cell polyethylene foam with an exterior "skin" used as a backing and thickness control device for elastomeric and other cold applied sealants. The Backer Rod becomes an integral part of the joint into which it is installed, and therefore is available in a