Pecora Urexpan NR-300
Urexpan NR-300 is a two-part, chemically-curing, cold- applied self-leveling modified polyurethane elastomeric sealant that withstands heavy vehicular traffic and is virtually unaffected by jet fuel, hydraulic fluids, oil or lubricants. It is available in two versions: hand mix (Type H) and machine mix (Type M), the only difference being the rate of cure.