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 2925-01-169-6196
NSN 5945-01-024-7882
NSN 5965-01-056-7225
NSN 4140-01-594-4551
NSN 6220-01-577-1221
NSN 5975-01-202-7423
NSN 6145-00-072-9382
NSN 6110-01-596-7302
NSN 6105-01-549-7398
NSN 5855-01-051-1155
NSN 5915-01-324-7047
NSN 6220-01-495-7661