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 5999-01-413-9927
NSN 7035-01-650-5774
NSN 5895-01-258-4382
NSN 5920-01-426-8517
NSN 5945-01-191-9858
NSN 6610-01-049-8747
NSN 6150-01-105-0686
NSN 5996-01-608-4360
NSN 5990-00-647-4008
NSN 5975-01-188-5200
NSN 5950-01-361-1623
NSN 6620-01-314-3635