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 6150-01-239-6920
NSN 6645-00-968-6118
NSN 5915-00-217-6517
NSN 5835-01-235-0391
NSN 5920-00-425-2878
NSN 7035-00-973-9215
NSN 5855-00-231-7790
NSN 5920-01-266-8919
NSN 6110-00-806-5459
NSN 5895-01-573-2077
NSN 5960-01-076-4708
NSN 4140-01-386-5630