CRL 1" Closed Cell Backer Rod - 550' Case Silicone Sealants or any fine abrasive that

or any fine abrasive that will pass through a 30 to 100 mesh screen

Odorless and Adheres to All Common Interior Substrates

Recommended for dual seal units only with Polyisobutylene (PIB) Tape as the primary seal

12 per case

CRL 1" Closed Cell Backer Rod - 550' Case Silicone Sealants or any fine abrasive thatAllows 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