HBR® is a closed-cell, polyethylene foam backer rod joint filler that is used as a backing material for elastomeric and other cold-applied sealants. It helps the sealant assume the optimum shape to prolong service life and acts as a barrier to the flow of sealant through the joint. It will not absorb water and is available in ¼” to 6” diameter.
HBR®
Ready to partner with a team that delivers real results?
Let’s build smarter, more efficient, and performance-driven foam solutions—together, with innovation you can trust.