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 6685-00-904-4845
NSN 6620-01-411-5750
NSN 2925-01-480-8273
NSN 5960-01-447-6798
NSN 5945-00-614-7447
NSN 5905-00-227-9026
NSN 5999-00-833-8143
NSN 5895-01-578-5210
NSN 5895-01-040-1385
NSN 5999-01-183-4771
NSN 6105-00-521-1136
NSN 6150-01-363-2550