CRL 1" Closed Cell Backer Rod - 550' Case Finish:Gray Proper size selection of CRL

Proper size selection of CRL Closed Cell Backer Rod is important as it controls the depth of the sealant bead

curtainwalls

and painted surfaces

and dozens of other uses in the shop

Conforms to ASTM C920 Type S

CRL 1" Closed Cell Backer Rod - 550' Case Finish:Gray Proper size selection of CRLAllows 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