17 lb per cu ft density rating
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 6220-00-389-6215
NSN 5965-01-136-4781
NSN 6620-01-408-4464
NSN 5965-01-273-0943
NSN 6145-01-062-9820
NSN 5945-00-801-1659
NSN 5915-00-534-5391
NSN 4140-00-471-1464
NSN 5985-00-845-6997
NSN 5950-01-055-6333
NSN 2925-01-035-1096
NSN 6130-00-567-2800