SOF®-Rod Backer Rod

Chem Link SOF®-Rod is a cylindrical, flexible foam rod for use as a sealant backing. SOF®-Rod is composed of a bi-cellular material. SOF®-Rod may also be used as a gasket or sealing material as per ASTM C717. 

Use of SOF®-Rod limits the depth of the sealant and prevents excessive sealant use. It also acts as a barrier to the flow of sealant through the joint, helps prevent 3 point bonding, and forces the sealant to take a more optimum shape prolonging sealant service life.