Fire Resistant Expanding PU foam. A high performance, polyurethane expanding foam, fire rated and tested to BSEN 1366-4 and BS476 Part 20 (the most stringent test for fire rated products).
Polyurethane foam filter for air
3274982295TDS - PU Foam PDF | PDF | Foam | Adhesive
TECHNICAL DA PU-foam for gun TECHNICAL ... - Biltema