Surfaceblack finish or black dip finish-chemical black
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 5935-00-599-6781
NSN 5920-01-398-7123
NSN 6145-01-147-9838
NSN 5965-00-805-4893
NSN 5960-00-018-3477
NSN 2925-00-939-1979
NSN 5915-01-190-3472
NSN 6105-01-030-9266
NSN 6130-01-014-9306
NSN 6620-01-408-4464
NSN 6240-00-230-2716
NSN 6610-01-376-9199