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 6135-00-315-1187
NSN 6135-01-286-9563
NSN 5925-00-763-4104
NSN 7035-01-438-2108
NSN 2925-01-219-9471
NSN 5945-01-157-4611
NSN 5985-01-507-1589
NSN 5945-00-603-2919
NSN 5975-01-628-5952
NSN 6110-00-092-1482
NSN 6150-01-086-3331
NSN 5920-01-575-1593