CRL 3/8" Closed Cell Backer Rod - 3600' Case Sealant Accessories All CRL Silicone Sealant cartridges

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

Sonneborn: NP2

Important Note:

One-Part Fast Cure Urethane with Low Solvent Formula Compatible with Super Spacer®

CRL 3/8" Closed Cell Backer Rod - 3600' Case Sealant Accessories All CRL Silicone Sealant cartridgesAllows 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