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 5999-01-598-0220
NSN 5950-01-186-1976
NSN 6240-01-508-4146
NSN 5915-00-813-1611
NSN 2925-01-282-3206
NSN 6685-01-055-6057
NSN 6145-01-245-0541
NSN 5905-00-004-6063
NSN 6650-01-349-6097
NSN 5985-01-050-8609
NSN 5990-01-029-0868
NSN 5945-00-737-3195