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 6685-00-702-5498
NSN 5998-01-327-7406
NSN 6610-00-156-5699
NSN 4140-01-444-4464
NSN 5996-00-098-3864
NSN 6130-00-759-8134
NSN 5965-00-236-0016
NSN 6110-01-538-6493
NSN 5960-01-015-2610
NSN 7035-01-205-1478
NSN 5985-00-983-8922
NSN 6240-00-512-3473