Premium Closed-Cell Polyethylene Backer Rod
Durable polyethylene foam resists moisture, mold, and chemicals for long-term joint stability. Precision-engineered closed-cell structure prevents air/water infiltration, ensuring superior insulation and adhesion. Ideal for sealing gaps in concrete, windows, doors, and masonry before applying caulk or sealant. Flexible yet firm design compresses evenly to fill irregular gaps without sagging or shrinking. Sold in bulk at unbeatable wholesale prices—perfect for contractors and large-scale projects. Global shipping available, backed by reliable quality and industry-leading value.