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 5985-00-644-9752
NSN 5920-00-802-0666
NSN 5975-01-406-3620
NSN 6650-00-927-3391
NSN 5915-01-425-8615
NSN 6685-00-812-1160
NSN 5965-01-106-1431
NSN 6610-00-435-8932
NSN 6110-01-400-4207
NSN 5835-01-366-5907
NSN 5895-00-189-8095
NSN 4140-01-406-0541