A circular shaped item with an aperture manufactured to predetermined dimensions and designed for use as a seal in stuffing boxes, packing nuts, and the like. It may be (1) any nonmetallic molded or formed ring (except solid (without joint) rings having a square or rectangular cross section); or (2) any shredded metal or metal foil type metallic or semimetallic rings. Excludes felt items but includes multimaterial items in which one of the materials is felt. For solid (without joints) nonmetallic items with a square or rectangular cross section, see washer (as modified) and gasket. For rubber items specifically designed for weather-proofing doors, windows, chests, and the like see seal, nonmetallic angle; seal, nonmetallic channel; and seal, nonmetallic, special shaped section. For circular (with aperature) nonmetallic items with a solid round cross-section see o-ring. Excludes cup, compression; gasket; washer (as modified); and felt, mechanical, preformed.
Classification: Gaskets,washers & other seals
NSN 6110-01-411-9297
NSN 6220-00-832-0767
NSN 6135-01-200-5144
NSN 6130-01-245-6134
NSN 6645-00-177-0826
NSN 6650-01-519-9165
NSN 5905-00-336-9097
NSN 5999-00-025-6984
NSN 5985-01-508-0982
NSN 6620-01-168-1615
NSN 6130-00-149-1977
NSN 6650-01-364-8504