Alternate material is ballistic foam 10-2.5a frc material specification no p-m501
A flexible, porous piece of low density material formed to totally occupy, alone or combined with other pieces, the interior of a fuel tank or dry cavity. its primary function is to reduce the risk of fuel explosion during crash or combat. it is colored to indicate material density and porosity.
Classification: Other parts, nesoi, for use in other military aircraft, spacecraft and spacecraft launch vehicles (excluding parts of communication satellites)
NSN 5999-01-607-3692
NSN 2925-00-383-3523
NSN 6135-01-079-7852
NSN 6130-01-155-3137
NSN 5925-01-173-1763
NSN 6220-01-517-4377
NSN 5930-01-297-9873
NSN 6685-01-288-6097
NSN 6240-00-027-9931
NSN 6620-01-272-7831
NSN 6220-01-253-3496
NSN 6130-01-634-0603