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 5920-00-949-7321
NSN 2925-00-964-7128
NSN 6610-01-555-8364
NSN 6240-01-188-7282
NSN 5990-01-582-1977
NSN 2925-00-066-9700
NSN 2925-00-295-8109
NSN 5895-01-245-4776
NSN 7035-00-238-3662
NSN 5999-01-422-1676
NSN 6320-01-445-8192
NSN 5920-00-851-8776