Nu-Foam is an expanding, polyurethane, prepolymer foam that is used as a sealant and an insulating product. It is designed to seal, fill and insulate small cracks, gaps and voids. Tack-free time for Nu-Foam is less than 30 min at 70 deg F and 40-50% relative humidity. Its R-value is 4.9 per in thick making a very good insulator in most any application and can even provide sound-deadening. Nu-Foam is UL classified and is fire retardant. Can withstand temperatures up to 240 deg F.

Nu-Calgon Nu-Foam Expanding and Insulating Sealant, 12 oz Net Content, Can Container, Amber, Light Petroleum Odor/Scent, Composition: 20 to 40% Diphenylmethanediisocyanate, Isomeres and Homologues, 10 to 20% 4,4'-Methylenediphenyl Diisocyanate, 10 to 20% Tris(2-ChlorisoPropyl)-Phosphate R52/53, 5 to 10% Dimethyl Ether, 1 to 5% Isobutane, 1 to 5% Propane, 4 hr Dry Time, -44 deg F Boiling Point, -155 deg F Flash Point, Density: 1.01 g/cc, 240 deg F

• Double expansion polyurethane foam
• All-direction dispensing
• Insulates against heat loss and heat gain
• Tack-free in 30 min and dries in 4 hr
• Fire retardant
• No CFC or HCFC
• Yields 352 linear ft (medium can) and 780 linear ft (large can) of 3/8 in bead
• 2 year shelf life
• Water vapor transmission in 10 perm in