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 5999-01-079-0157
NSN 6645-01-616-8996
NSN 6145-00-603-2578
NSN 6610-01-373-5949
NSN 5996-01-354-9386
NSN 5950-00-241-8870
NSN 6610-01-562-0846
NSN 6220-01-144-2335
NSN 6645-01-290-3930
NSN 5920-01-449-1321
NSN 6135-00-896-3187
NSN 5950-01-283-1407