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 5945-00-421-3169
NSN 5960-01-048-8228
NSN 5960-01-374-0764
NSN 6130-01-267-8242
NSN 5895-01-588-1217
NSN 4140-00-846-4786
NSN 5945-00-147-7744
NSN 5895-01-220-9138
NSN 6240-00-505-6099
NSN 6130-01-226-5080
NSN 6105-01-085-6002
NSN 5985-01-541-3793