CRL 3/8" Closed Cell Backer Rod - 3600' Case Sealant Accessories It contains adhesion promoting additives

It contains adhesion promoting additives for excellent glass-to-glass adhesion

and withstands extreme temperatures after full cure from 0°F to 180°F (-17° to 82°C)

All CRL Silicone Sealant cartridges are packed with innovative Screw-On Nozzles

High Modulus Sealant for Two or Four Sided Structural Glazing Applications

CRL 3/8" Closed Cell Backer Rod - 3600' Case Sealant Accessories It contains adhesion promoting additivesAllows Easy Control of Sealant Application Thickness Won't Adhere to Sealants; No Bond Breaker Needed Compatible with All Cold Applied Sealants Preferred for Exterior Installations Where a More Positive Seal is Required 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