Caulk Saver – Closed Cell Foam Backer for Gap Filling
Backer rods are Ideal,compressible and flexible backup PE foam products that are used to fill joints. People often use mortar, sealant or chinking around them to finish filling and create an airtight and watertight seal.
| Density | 0.025–0.40 gm/cm³ |
|---|---|
| Water Absorption | 0.01 gm/cm² |
| Temperature Range | -30℃ to +120℃ |
| Elongation | 20 to 50% |
| Resiliency | Excellent |
| Chemical Resistance | Excellent against Acids, Alkali & Solvent |
Our Caulk Saver is made of lightweight, resilient closed-cell foam, ideal for filling joints and gaps before caulking. It’s especially beneficial for energy-saving and moisture prevention applications.
They are non-absorbent and will resist oil, gasoline and most other sealants. They are compatible with most cold-applied sealants. Backer rods are used in tiling, flooring, decorative wall paneling, window sealing, stonework and counter steps.
📏 Density Range: Lightweight and versatile, with density ranging from 0.025–0.40 gm/cm³.
💧 Low Water Absorption: Only 0.01 gm/cm², helping prevent moisture buildup.
🌡️ Temperature Resistant: Withstands from -30°C to +120°C, suitable for both indoor and outdoor use.
➕ Good Elongation: Offers flexibility with 20–50% elongation for easy fitting.
🌀 Excellent Resiliency: Maintains original shape even after compression.
🧪 Chemical Resistance: Resists acids, alkalis, and solvents, ensuring long-term performance.
Perfect for residential, commercial, or industrial applications.
Joint filler for pre-fabricated houses, tunnels, carports, subways, bridges and other concrete structures.
Seam coupler for water supply and sewerage pipes Window and Sash frames
Liquid reservoirs and swimming pools Window sash frames
At DAOSEAL, we offer flexible OEM and customization options to match your specific needs.
Discover what our customers say about DAOSEAL’s s Weatherstripping From product performance to support experience, we’re proud to be their sealing solution partner.
We supply closed-cell PE backer rods. They offer very low water absorption (~0.01 g/cm²), better moisture resistance and are ideal for exterior applications. Open-cell types are mainly for interior, highly breathable joints.
A Foam Caulk Saver Backer Rod is a closed-cell PE foam product used to fill joints, gaps, and cracks before caulking, creating an airtight and watertight seal.
It is ideal for use in flooring, tiling, decorative wall paneling, window sealing, stonework, and counter steps, helping improve insulation and moisture resistance.
Commonly supplied on spools (e.g., 50 m / 100 m) or cut lengths. Typical MOQ is ~200 rolls for standard sizes; OEM/ODM and mixed sizes are supported—contact us for a quote
Density: 0.025–0.40 g/cm³; Water absorption: ~0.01 g/cm²; Elongation: 20–50%; Temperature range: −30 °C to +120 °C ; Excellent resiliency and chemical resistance (acids, alkalis, solvents
tandard diameters are 6–50 mm. Custom sizes (3–80 mm), colors, and spool lengths are available on request
Yes, it withstands temperatures from -30°C to +120°C and is suitable for both indoor and outdoor use.
Contact Daoseal for expert advice, fast quotation, and free sample of door & window sealing strips. Response within 12 hours, guaranteed!
We will contact you within 1 working day, please pay attention to the email with the suffix “@Daoseal.com”.
