Polyurethane foam with high resistance to fire.
B1 Fire Resistant Gun Grade PU Foam - Box of 12
Touch 'n Foam Fire Break Orange Polyurethane Foam Sealant 12 oz
ORBAFOAM B1 Fire Stop PU Foam ERGO - Quilosa
Expandable PU foam spray sealant FAQs on Expandable Polyurethane
FP404, Passive Fire Protection
Fire Retardant PU Foam Fireproof B2 Rating Polyurethane Foam for
Touch 'n Seal Black Foam Polyurethane Foam Sealant - GIC
Fire Resistant Polyurethane Foam 900g - Grafen Professional
Touch 'n Foam Professional All-Purpose Polyurethane Foam Sealant