Alternate material-polyurethane sponge
A deformable material which prevents the passage of matter through the joint formed when two faces are joined. It may be metallic or nonmetallic, lubricated or impregnated, solid or hollow cross section. It may be made to any predetermined dimension and shape. Excludes flat disks, items made of felt material and items having joints. For round metal and plastic items with an aperture and a solid rectangular cross section, see washer, flat; shim; bearing, washer, thrust; and spacer ring. Excludes disk, valve; seal, nonmetallic angle; seal, nonmetallic channel; seal, nonmetallic special shaped section; shielding gasket, electronic; and ring, sealing jar.
NSN 6650-00-796-9972
NSN 5990-01-209-3955
NSN 6145-01-331-1656
NSN 6610-01-080-8064
NSN 6650-00-504-9946
NSN 5910-01-616-9285
NSN 5925-01-054-5473
NSN 6650-01-144-0617
NSN 5905-00-001-8762
NSN 5998-01-381-2986
NSN 4140-01-467-1986
NSN 5990-00-607-6210