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 5945-00-078-8280
NSN 6620-01-605-1465
NSN 5920-01-556-7297
NSN 5998-01-381-7519
NSN 6145-00-553-8196
NSN 5895-00-504-7700
NSN 6610-00-956-4464
NSN 5999-01-279-6914
NSN 5895-01-197-7401
NSN 6220-00-042-8355
NSN 5985-00-271-9502
NSN 6645-01-199-0062