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 5960-01-134-4099
NSN 5965-01-332-1931
NSN 7035-01-316-7860
NSN 6320-00-110-8005
NSN 6110-01-362-2411
NSN 6320-01-583-6809
NSN 6610-00-118-4318
NSN 6320-01-643-0850
NSN 5999-01-373-1680
NSN 6240-00-239-0159
NSN 5975-01-501-0993
NSN 6240-00-488-0278