Seal Bond 425 Building Envelope Sealant

SB 425 is an extremely high-performance, one-component, sealant for building envelope applications with broad substrate compatibility including aluminum, glass, vinyl, wood, PVC, steel and most building wraps. SB 425 is a low odor and 100% solids formula designed for interior and exterior construction applications. SB 425 is an environmentally friendly formula that contains no solvents or isocyanates and yields very low VOC’s. SB 425 is based on moisture cure hybrid polymer technology that reacts and cross-links in the presence of moisture to provide a durable seal with excellent weathering and UV resistance and performs in temperatures from -40o F to 200o F.

Features & Benefits


  • Window, Siding and Door Installation
  • Fenestrations
  • General Building Envelope Sealing


  • Solvent and isocyanate free
  • Non-silicone
  • Non-flammable
  • Fast curing
  • Permanently elastic in a broad temperature range
  • Paint compatible
  • Low odor
  • Extremely low shrinkage
  • Compatible with many building wraps and flashings

Request Pricing or Information