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 5925-01-145-5484
NSN 5998-01-302-8455
NSN 4140-00-617-0984
NSN 5930-01-183-2844
NSN 6650-01-362-4289
NSN 6135-01-336-3115
NSN 5930-00-130-9109
NSN 5910-01-340-9867
NSN 6150-01-455-5141
NSN 5985-01-366-4276
NSN 5910-01-633-9963
NSN 5985-01-634-0635