Back up Rod Insulating Joint

Specification BACK UP ROD DUNALON is chemically non-cross linked polyethylene foam with closed cells, expanded 15 or 40 times. It is a light and durable material with excel lent shock absorbing and heat insulation properties. Water-repellent and highly resistant to weather-proof and chemical.
Application BACK UP ROD DUNALON used at sealant and gasket material in various applications: Curtain wall, windows and sash frames, GRC, Pre cast concrete, panels, expansion joints for rooftop, tunnels, subway, brigdes and automotives, etc.