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 6130-00-153-3136
NSN 5965-01-600-2183
NSN 6130-00-569-2408
NSN 5920-01-479-2217
NSN 6610-01-609-7776
NSN 6685-01-252-8887
NSN 6645-01-578-6815
NSN 5835-01-192-4165
NSN 6650-01-334-6856
NSN 5960-00-837-1726
NSN 6645-01-447-3143
NSN 6240-01-176-9037