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 5920-00-565-8231
NSN 6645-01-262-8493
NSN 6685-01-485-3110
NSN 5945-00-193-4891
NSN 6610-01-406-6696
NSN 6650-01-152-0665
NSN 5985-01-014-9580
NSN 6650-00-302-3707
NSN 6610-01-392-5555
NSN 5999-01-454-9622
NSN 5998-01-201-4497
NSN 5985-00-985-5419