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KM PE Round Backer Rod – Closed Cell
KM Polyethylene Round Backer Rod is an ideal non-absorbent compressible backup material inserted into a joint to control depth and create a backstop. This extruded, closed cell, low density polyethylene foam material features a skin-like outer texture and allows proper sealant tooling, proper sealant wetting of the joint surface, temporary sealing in gaps, and yields a proper bond breaker between the backer rod and sealant. The material is chemically inert and highly flexible with excellent resilient properties.
| Material: | Low density polyethylene foam (closed cell) |
| Density: | 28 kg/m³ ± 20% |
| Tensile Strength: | 41.4 N/cm² |
| Water Absorption: | 0.003 g per 100cm²; < 5 Vol.% |
| Outgassing: | No presence (ASTM C 1253) |
| Colors: | White, Grey |
| Installation Sizing: | Rod diameter should be 25% wider than joint width |
| Compatibility: | Butyl, polysulfide, acrylic, polyurethane, silicone sealants |
| Chemical Resistance: | Oil, gasoline, acids, lubricants, detergents, most solvents |
| Features: | Non-staining, non-adhering, non-exuding, highly compressible |
Applications:
Glazing installations, window and door applications, expansion joints, curtain wall joints, log construction, pavement joints, repairs, precast and copings, joint depth control for proper sealant installation
