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 5996-01-335-8351
NSN 5975-01-255-3913
NSN 5915-00-739-7331
NSN 5985-01-285-2167
NSN 6220-00-507-9831
NSN 5990-01-025-7466
NSN 5835-00-289-9080
NSN 6645-01-363-9790
NSN 5920-01-316-6504
NSN 6610-01-462-5980
NSN 7035-00-529-3128
NSN 6650-00-074-2445