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 6220-01-464-3618
NSN 6240-01-429-9002
NSN 5999-01-566-8848
NSN 6650-01-168-8451
NSN 5975-01-309-2164
NSN 5999-01-097-9185
NSN 5990-00-902-7764
NSN 5835-00-876-4544
NSN 6645-01-290-9428
NSN 6110-01-617-8126
NSN 6135-00-998-5884
NSN 6145-00-793-7816