View product detail page of CERA-ROD Non-Gassing, Heat-Resistant Backer Rod, 1 / 2" x 2500'. CERA-ROD Non-Gassing, Heat-Resistant Backer Rod, 1 / 2" x 2500' CERA-ROD Non-Gassing, Heat-Resistant Backer Rod, 1 / 2" x 2500' Code: 032525