Material is listed as anchor per 440gs (astm f104)
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 5935-01-100-1089
NSN 5945-01-289-2084
NSN 6220-00-473-0517
NSN 5920-00-837-2633
NSN 6650-01-115-7981
NSN 5905-00-842-1366
NSN 6620-00-816-9755
NSN 6320-01-399-6177
NSN 5985-01-130-3989
NSN 5920-00-490-9176
NSN 6105-01-450-0755
NSN 6685-01-541-2140