BOSS® 338
Flexible Foam


  • 338 Flexible Foam

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BOSS® 338
Flexible Foam


A unique, flexible, minimal expansion, one component, moisture curing PU foam. Designed for window and door installs, insulating wall panels, electrical outlets, pipes and vents.


  • Very high elastic recovery (up to 90% if compressed by 75%)
  • Easy application
  • Minimal expansion
  • 2 year shelf life
  • Excellent adhesion to almost all substrates
  • Excellent thermal and acoustical insulation
  • No shrinkage
  • Storage in all positions
  • AAMA compliant


Packaging Types

  • 24 oz. Gun Can

Technical Information

Sales Sheet

338 Sales Sheet
PDF (ENG)

SDS

338 SDS
PDF (ENG)

TDS

338 TDS
PDF (ENG)